Misplaced Pages

#141858

88-594: Water is an inorganic compound with the chemical formula H 2 O . It is a transparent, tasteless, odorless, and nearly colorless chemical substance . It is the main constituent of Earth 's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent ). It is vital for all known forms of life , despite not providing food energy or organic micronutrients . Its chemical formula, H 2 O , indicates that each of its molecules contains one oxygen and two hydrogen atoms , connected by covalent bonds . The hydrogen atoms are attached to

176-441: A stress accent rather than the pitch accent of Proto-Indo-European . This is indicated by the shortening of long vowels [eː] and [oː] and the loss of short vowels [a] and [i] in unstressed final syllables. Just as in other Germanic languages, the free moving Proto-Indo-European accent was replaced with one fixed on the first syllable of simple words. Accents do not shift when words are inflected. In most compound words,

264-436: A chemical as inorganic does not necessarily mean that it cannot occur within living things. Friedrich Wöhler 's conversion of ammonium cyanate into urea in 1828 is often cited as the starting point of modern organic chemistry . In Wöhler's era, there was widespread belief that organic compounds were characterized by a vital spirit . In the absence of vitalism, the distinction between inorganic and organic chemistry

352-428: A former perfect); three grammatical moods : indicative , subjunctive (from an old optative form) and imperative as well as three kinds of nominal forms: a present infinitive , a present participle , and a past passive . Not all tenses and persons are represented in all moods and voices, as some conjugations use auxiliary forms . Finally, there are forms called 'preterite-present': the old Indo-European perfect

440-713: A group of monks who reported that even then certain peoples in Scythia ( Dobruja ), especially around Tomis , spoke a sermo Theotiscus ('Germanic language'), the language of the Gothic translation of the Bible, and that they used such a liturgy. Many writers of the medieval texts that mention the Goths used the word Goths to mean any Germanic people in eastern Europe (such as the Varangians ), many of whom certainly did not use

528-481: A large amount of sediment transport that occurs on the surface of the earth. Deposition of transported sediment forms many types of sedimentary rocks , which make up the geologic record of Earth history . The water cycle (known scientifically as the hydrologic cycle) is the continuous exchange of water within the hydrosphere , between the atmosphere , soil water, surface water , groundwater, and plants. Water moves perpetually through each of these regions in

616-518: A lineal descendant of the language attested in the Codex Argenteus. The existence of such early attested texts makes Gothic a language of considerable interest in comparative linguistics . Only a few documents in Gothic have survived – not enough for a complete reconstruction of the language. Most Gothic-language sources are translations or glosses of other languages (namely, Greek ), so foreign linguistic elements most certainly influenced

704-489: A pressure of 611.657 pascals (0.00604 atm; 0.0887 psi); it is the lowest pressure at which liquid water can exist. Until 2019 , the triple point was used to define the Kelvin temperature scale . The water/vapor phase curve terminates at 647.096 K (373.946 °C; 705.103 °F) and 22.064 megapascals (3,200.1 psi; 217.75 atm). This is known as the critical point . At higher temperatures and pressures

792-475: A property that is exploited by cetaceans and humans for communication and environment sensing ( sonar ). Metallic elements which are more electropositive than hydrogen, particularly the alkali metals and alkaline earth metals such as lithium , sodium , calcium , potassium and cesium displace hydrogen from water, forming hydroxides and releasing hydrogen. At high temperatures, carbon reacts with steam to form carbon monoxide and hydrogen. Hydrology

880-433: A structure of rigid oxygen atoms in which hydrogen atoms flowed freely. When sandwiched between layers of graphene , ice forms a square lattice. The details of the chemical nature of liquid water are not well understood; some theories suggest that its unusual behavior is due to the existence of two liquid states. Pure water is usually described as tasteless and odorless, although humans have specific sensors that can feel

968-459: A variety of applications including high-temperature electrochemistry and as an ecologically benign solvent or catalyst in chemical reactions involving organic compounds. In Earth's mantle, it acts as a solvent during mineral formation, dissolution and deposition. The normal form of ice on the surface of Earth is ice I h , a phase that forms crystals with hexagonal symmetry . Another with cubic crystalline symmetry , ice I c , can occur in

SECTION 10

#1732779640142

1056-410: A water molecule, the hydrogen atoms form a 104.5° angle with the oxygen atom. The hydrogen atoms are close to two corners of a tetrahedron centered on the oxygen. At the other two corners are lone pairs of valence electrons that do not participate in the bonding. In a perfect tetrahedron, the atoms would form a 109.5° angle, but the repulsion between the lone pairs is greater than the repulsion between

1144-519: Is the verb "to be" , which is athematic in Greek, Latin, Sanskrit, and many other Indo-European languages. Gothic verbs are, like nouns and adjectives, divided into strong verbs and weak verbs. Weak verbs are characterised by preterites formed by appending the suffixes -da or -ta , parallel to past participles formed with -þ / -t . Strong verbs form preterites by ablaut (the alternating of vowels in their root forms) or by reduplication (prefixing

1232-435: Is 917 kg/m (57.25 lb/cu ft), an expansion of 9%. This expansion can exert enormous pressure, bursting pipes and cracking rocks. In a lake or ocean, water at 4 °C (39 °F) sinks to the bottom, and ice forms on the surface, floating on the liquid water. This ice insulates the water below, preventing it from freezing solid. Without this protection, most aquatic organisms residing in lakes would perish during

1320-420: Is an allophone of the others, all found only in complementary distribution with them. Nasals in Gothic, like most other languages, are pronounced at the same point of articulation as the consonant that follows them ( assimilation ). Therefore, clusters like [md] and [nb] are not possible. Accentuation in Gothic can be reconstructed through phonetic comparison, Grimm's law , and Verner's law . Gothic used

1408-591: Is clearly identifiable evidence from other branches that the Gothic form is a secondary development. Gothic fails to display a number of innovations shared by all Germanic languages attested later: The language also preserved many features that were mostly lost in other early Germanic languages: Most conspicuously, Gothic shows no sign of morphological umlaut. Gothic fotus , pl. fotjus , can be contrasted with English foot  : feet , German Fuß  : Füße , Old Norse fótr  : fœtr , Danish fod  : fødder . These forms contain

1496-492: Is fairly free as is typical of other inflected languages. The natural word order of Gothic is assumed to have been like that of the other old Germanic languages; however, nearly all extant Gothic texts are translations of Greek originals and have been heavily influenced by Greek syntax. Sometimes what can be expressed in one word in the original Greek will require a verb and a complement in the Gothic translation; for example, διωχθήσονται ( diōchthēsontai , "they will be persecuted")

1584-487: Is important in many geological processes. Groundwater is present in most rocks , and the pressure of this groundwater affects patterns of faulting . Water in the mantle is responsible for the melt that produces volcanoes at subduction zones . On the surface of the Earth, water is important in both chemical and physical weathering processes. Water, and to a lesser but still significant extent, ice, are also responsible for

1672-468: Is it a noble gas (and therefore is not removed from the atmosphere through chemical reactions with other elements), but comparisons between the abundances of its nine stable isotopes in the modern atmosphere reveal that the Earth lost at least one ocean of water early in its history, between the Hadean and Archean eons. Any water on Earth during the latter part of its accretion would have been disrupted by

1760-469: Is less significant in Gothic because of its conservative nature: the so-called "weak" declensions (those ending in n ) are, in fact, no weaker in Gothic (in terms of having fewer endings) than the "strong" declensions (those ending in a vowel), and the "strong" declensions do not form a coherent class that can be clearly distinguished from the "weak" declensions. Although descriptive adjectives in Gothic (as well as superlatives ending in -ist and -ost ) and

1848-461: Is merely semantic. Gothic language As a Germanic language, Gothic is a part of the Indo-European language family. It is the earliest Germanic language that is attested in any sizable texts, but it lacks any modern descendants. The oldest documents in Gothic date back to the fourth century. The language was in decline by the mid-sixth century, partly because of the military defeat of

SECTION 20

#1732779640142

1936-419: Is poor at dissolving nonpolar substances. This allows it to be the " solvent of life": indeed, water as found in nature almost always includes various dissolved substances, and special steps are required to obtain chemically pure water . Water is the only common substance to exist as a solid , liquid, and gas in normal terrestrial conditions. Along with oxidane , water is one of the two official names for

2024-411: Is rendered: Likewise Gothic translations of Greek noun phrases may feature a verb and a complement. In both cases, the verb follows the complement, giving weight to the theory that basic word order in Gothic is object–verb. This aligns with what is known of other early Germanic languages. However, this pattern is reversed in imperatives and negations: And in a wh -question the verb directly follows

2112-647: Is the preservation of the dual number , referring to two people or things; the plural was used only for quantities greater than two. Thus, "the two of us" and "we" for numbers greater than two were expressed as wit and weis respectively. While proto-Indo-European used the dual for all grammatical categories that took a number (as did Classical Greek and Sanskrit ), most Old Germanic languages are unusual in that they preserved it only for pronouns. Gothic preserves an older system with dual marking on both pronouns and verbs (but not nouns or adjectives). The simple demonstrative pronoun sa (neuter: þata , feminine: so , from

2200-458: Is the study of the movement, distribution, and quality of water throughout the Earth. The study of the distribution of water is hydrography . The study of the distribution and movement of groundwater is hydrogeology , of glaciers is glaciology , of inland waters is limnology and distribution of oceans is oceanography . Ecological processes with hydrology are in the focus of ecohydrology . The collective mass of water found on, under, and over

2288-421: Is usually used in the academic literature. The following table shows the correspondence between spelling and sound for vowels: Notes: The following table shows the correspondence between spelling and sound for consonants: It is possible to determine more or less exactly how the Gothic of Ulfilas was pronounced, primarily through comparative phonetic reconstruction. Furthermore, because Ulfilas tried to follow

2376-681: The Earth's crust , although the compositions of the deep mantle remain active areas of investigation. All allotropes (structurally different pure forms of an element) and some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon ( graphite , diamond , buckminsterfullerene , graphene , etc.), carbon monoxide CO , carbon dioxide CO 2 , carbides , and salts of inorganic anions such as carbonates , cyanides , cyanates , thiocyanates , isothiocyanates , etc. Many of these are normal parts of mostly organic systems, including organisms ; describing

2464-483: The Moon-forming impact (~4.5 billion years ago), which likely vaporized much of Earth's crust and upper mantle and created a rock-vapor atmosphere around the young planet. The rock vapor would have condensed within two thousand years, leaving behind hot volatiles which probably resulted in a majority carbon dioxide atmosphere with hydrogen and water vapor . Afterward, liquid water oceans may have existed despite

2552-428: The elements hydrogen and oxygen by passing an electric current through it—a process called electrolysis . The decomposition requires more energy input than the heat released by the inverse process (285.8 kJ/ mol , or 15.9 MJ/kg). Liquid water can be assumed to be incompressible for most purposes: its compressibility ranges from 4.4 to 5.1 × 10 Pa in ordinary conditions. Even in oceans at 4 km depth, where

2640-526: The molar volumes of the liquid and solid phases, and L f {\displaystyle L_{\text{f}}} is the molar latent heat of melting. In most substances, the volume increases when melting occurs, so the melting temperature increases with pressure. However, because ice is less dense than water, the melting temperature decreases. In glaciers, pressure melting can occur under sufficiently thick volumes of ice, resulting in subglacial lakes . The Clausius-Clapeyron relation also applies to

2728-498: The past participle may take both definite and indefinite forms, some adjectival words are restricted to one variant. Some pronouns take only definite forms: for example, sama (English "same"), adjectives like unƕeila ("constantly", from the root ƕeila , "time"; compare to the English "while"), comparative adjective and present participles . Others, such as áins ("some"), take only the indefinite forms. The table below displays

Water - Misplaced Pages Continue

2816-400: The water cycle consisting of the following transfer processes: Inorganic compound An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds ⁠ ‍ — ‍ that is, a compound that is not an organic compound . The study of inorganic compounds is a subfield of chemistry known as inorganic chemistry . Inorganic compounds comprise most of

2904-447: The water cycle of evaporation , transpiration ( evapotranspiration ), condensation , precipitation, and runoff , usually reaching the sea. Water plays an important role in the world economy . Approximately 70% of the fresh water used by humans goes to agriculture . Fishing in salt and fresh water bodies has been, and continues to be, a major source of food for many parts of the world, providing 6.5% of global protein. Much of

2992-635: The wh- at the beginning of many English interrogative, which, as in Gothic, are pronounced with [ʍ] in some dialects. The same etymology is present in the interrogatives of many other Indo-European languages: w- [v] in German, hv- in Danish , the Latin qu- (which persists in modern Romance languages ), the Greek τ- or π-, the Slavic and Indic k- as well as many others. The bulk of Gothic verbs follow

3080-626: The 6th century, long after Ulfilas had died. A few Gothic runic inscriptions were found across Europe, but due to early Christianization of the Goths, the Runic writing was quickly replaced by the newly invented Gothic alphabet. Ulfilas's Gothic, as well as that of the Skeireins and various other manuscripts, was written using an alphabet that was most likely invented by Ulfilas himself for his translation. Some scholars (such as Braune) claim that it

3168-443: The Earth was younger and less massive , water would have been lost to space more easily. Lighter elements like hydrogen and helium are expected to leak from the atmosphere continually, but isotopic ratios of heavier noble gases in the modern atmosphere suggest that even the heavier elements in the early atmosphere were subject to significant losses. In particular, xenon is useful for calculations of water loss over time. Not only

3256-519: The Gothic language as known from the Gothic Bible. Some writers even referred to Slavic -speaking people as "Goths". However, it is clear from Ulfilas's translation that – despite some puzzles – the Gothic language belongs with the Germanic language-group, not with Slavic. Generally, the term "Gothic language" refers to the language of Ulfilas , but the attestations themselves date largely from

3344-686: The Goths at the hands of the Franks , the elimination of the Goths in Italy, and geographic isolation (in Spain, the Gothic language lost its last and probably already declining function as a church language when the Visigoths converted from Arianism to Nicene Christianity in 589). The language survived as a domestic language in the Iberian Peninsula (modern-day Spain and Portugal) as late as

3432-480: The Indo-European root *so , *seh 2 , *tod ; cognate to the Greek article ὁ, ἡ, τό and the Latin is tud ) can be used as an article, allowing constructions of the type definite article + weak adjective + noun . The interrogative pronouns begin with ƕ- , which derives from the proto-Indo-European consonant *kʷ that was present at the beginning of all interrogatives in proto-Indo-European, cognate with

3520-475: The Indo-European root, with Greek ύδωρ ( ýdor ; from Ancient Greek ὕδωρ ( hýdōr ), whence English ' hydro- ' ), Russian вода́ ( vodá ), Irish uisce , and Albanian ujë . One factor in estimating when water appeared on Earth is that water is continually being lost to space. H 2 O molecules in the atmosphere are broken up by photolysis , and the resulting free hydrogen atoms can sometimes escape Earth's gravitational pull. When

3608-431: The boiling point of water is 100 °C (212 °F). As atmospheric pressure decreases with altitude, the boiling point decreases by 1 °C every 274 meters. High-altitude cooking takes longer than sea-level cooking. For example, at 1,524 metres (5,000 ft), cooking time must be increased by a fourth to achieve the desired result. Conversely, a pressure cooker can be used to decrease cooking times by raising

Water - Misplaced Pages Continue

3696-607: The boiling point, but with the liquid/gas transition the vapor phase has a much lower density than the liquid phase, so the boiling point increases with pressure. Water can remain in a liquid state at high temperatures in the deep ocean or underground. For example, temperatures exceed 205 °C (401 °F) in Old Faithful , a geyser in Yellowstone National Park . In hydrothermal vents , the temperature can exceed 400 °C (752 °F). At sea level ,

3784-400: The boiling temperature. In a vacuum, water will boil at room temperature. On a pressure/temperature phase diagram (see figure), there are curves separating solid from vapor, vapor from liquid, and liquid from solid. These meet at a single point called the triple point , where all three phases can coexist. The triple point is at a temperature of 273.16 K (0.01 °C; 32.02 °F) and

3872-777: The chemical compound H 2 O ; it is also the liquid phase of H 2 O . The other two common states of matter of water are the solid phase, ice , and the gaseous phase, water vapor or steam . The addition or removal of heat can cause phase transitions : freezing (water to ice), melting (ice to water), vaporization (water to vapor), condensation (vapor to water), sublimation (ice to vapor) and deposition (vapor to ice). Water differs from most liquids in that it becomes less dense as it freezes. In 1 atm pressure, it reaches its maximum density of 999.972 kg/m (62.4262 lb/cu ft) at 3.98 °C (39.16 °F), or almost 1,000 kg/m (62.43 lb/cu ft) at almost 4 °C (39 °F). The density of ice

3960-466: The declension of the Gothic adjective blind (English: "blind"), compared with the an -stem noun guma "man, human" and the a -stem noun dags "day": This table is, of course, not exhaustive. (There are secondary inflexions of various sorts not described here.) An exhaustive table of only the types of endings that Gothic took is presented below. Gothic adjectives follow noun declensions closely; they take same types of inflection. Gothic inherited

4048-416: The definite determiners (such as the definite article sa / þata / sō ) while indefinite adjectives are used in other circumstances., Indefinite adjectives generally use a combination of a -stem and ō -stem endings, and definite adjectives use a combination of an -stem and ōn -stem endings. The concept of "strong" and "weak" declensions that is prevalent in the grammar of many other Germanic languages

4136-547: The digraphs ai and au (much as in French ) for the corresponding short or lower vowels. There are two variant spelling systems: a "raw" one that directly transliterates the original Gothic script and a "normalized" one that adds diacritics ( macrons and acute accents ) to certain vowels to clarify the pronunciation or, in certain cases, to indicate the Proto-Germanic origin of the vowel in question. The latter system

4224-454: The eighth century. Gothic-seeming terms are found in manuscripts subsequent to this date, but these may or may not belong to the same language. A language known as Crimean Gothic survived in the lower Danube area and in isolated mountain regions in Crimea as late as the second half of the 18th century. Lacking certain sound changes characteristic of Gothic, however, Crimean Gothic cannot be

4312-480: The end of a word, to their voiced form; another such example is wileid-u "do you ( pl. ) want" from wileiþ "you ( pl. ) want". If the first word has a preverb attached, the clitic actually splits the preverb from the verb: ga-u-láubjats "do you both believe...?" from galáubjats "you both believe". Another such clitic is -uh "and", appearing as -h after a vowel: ga-h-mēlida "and he wrote" from gamēlida "he wrote", urreis nim-uh "arise and take!" from

4400-748: The ends of words. Gothic is rich in fricative consonants (although many of them may have been approximants ; it is hard to separate the two) derived by the processes described in Grimm's law and Verner's law and characteristic of Germanic languages . Gothic is unusual among Germanic languages in having a /z/ phoneme, which has not become /r/ through rhotacization. Furthermore, the doubling of written consonants between vowels suggests that Gothic made distinctions between long and short, or geminated consonants: atta [atːa] "dad", kunnan [kunːan] "to know" (Dutch kennen , German kennen "to know", Icelandic kunna ). Gothic has three nasal consonants, one of which

4488-485: The force of gravity . This property is relied upon by all vascular plants , such as trees. Water is a weak solution of hydronium hydroxide—there is an equilibrium 2H 2 O ⇌ H 3 O + OH , in combination with solvation of the resulting hydronium and hydroxide ions. Pure water has a low electrical conductivity , which increases with the dissolution of a small amount of ionic material such as common salt . Liquid water can be split into

SECTION 50

#1732779640142

4576-476: The form of snow . The gaseous state of water is steam or water vapor . Water covers about 71% of the Earth's surface, with seas and oceans making up most of the water volume (about 96.5%). Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor , clouds (consisting of ice and liquid water suspended in air), and precipitation (0.001%). Water moves continually through

4664-443: The full set of Indo-European pronouns: personal pronouns (including reflexive pronouns for each of the three grammatical persons ), possessive pronouns , both simple and compound demonstratives , relative pronouns , interrogatives and indefinite pronouns . Each follows a particular pattern of inflection (partially mirroring the noun declension), much like other Indo-European languages. One particularly noteworthy characteristic

4752-418: The hydrogen atoms. The O–H bond length is about 0.096 nm. Other substances have a tetrahedral molecular structure, for example methane ( CH 4 ) and hydrogen sulfide ( H 2 S ). However, oxygen is more electronegative than most other elements, so the oxygen atom has a negative partial charge while the hydrogen atoms are partially positively charged. Along with the bent structure, this gives

4840-561: The imperative form nim "take". After iþ or any indefinite besides sums "some" and anþar "another", - uh cannot be placed; in the latter category, this is only because indefinite determiner phrases cannot move to the front of a clause. Unlike, for example, Latin - que , - uh can only join two or more main clauses. In all other cases, the word jah "and" is used, which can also join main clauses. More than one such clitics can occur in one word: diz-uh-þan-sat ijōs "and then he seized them ( fem. )" from dissat "he seized" (notice again

4928-476: The light source is sunlight reflected from the pool's white tiles. In nature, the color may also be modified from blue to green due to the presence of suspended solids or algae. In industry, near-infrared spectroscopy is used with aqueous solutions as the greater intensity of the lower overtones of water means that glass cuvettes with short path-length may be employed. To observe the fundamental stretching absorption spectrum of water or of an aqueous solution in

5016-427: The liquid and vapor phases form a continuous phase called a supercritical fluid . It can be gradually compressed or expanded between gas-like and liquid-like densities; its properties (which are quite different from those of ambient water) are sensitive to density. For example, for suitable pressures and temperatures it can mix freely with nonpolar compounds , including most organic compounds . This makes it useful in

5104-413: The liquid is known as boiling ). Sublimation and deposition also occur on surfaces. For example, frost is deposited on cold surfaces while snowflakes form by deposition on an aerosol particle or ice nucleus. In the process of freeze-drying , a food is frozen and then stored at low pressure so the ice on its surface sublimates. The melting and boiling points depend on pressure. A good approximation for

5192-753: The liquid or solid state can form up to four hydrogen bonds with neighboring molecules. Hydrogen bonds are about ten times as strong as the Van der Waals force that attracts molecules to each other in most liquids. This is the reason why the melting and boiling points of water are much higher than those of other analogous compounds like hydrogen sulfide. They also explain its exceptionally high specific heat capacity (about 4.2 J /(g·K)), heat of fusion (about 333 J/g), heat of vaporization ( 2257 J/g ), and thermal conductivity (between 0.561 and 0.679 W/(m·K)). These properties make water more effective at moderating Earth's climate , by storing heat and transporting it between

5280-415: The location of the stress depends on the type of compound: For example, with comparable words from modern Germanic languages: Gothic preserves many archaic Indo-European features that are not always present in modern Germanic languages, in particular the rich Indo-European declension system. Gothic had nominative , accusative , genitive and dative cases , as well as vestiges of a vocative case that

5368-1069: The long-distance trade of commodities (such as oil, natural gas, and manufactured products) is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating in industry and homes. Water is an excellent solvent for a wide variety of substances, both mineral and organic; as such, it is widely used in industrial processes and in cooking and washing. Water, ice, and snow are also central to many sports and other forms of entertainment, such as swimming , pleasure boating, boat racing , surfing , sport fishing , diving , ice skating , snowboarding , and skiing . The word water comes from Old English wæter , from Proto-Germanic * watar (source also of Old Saxon watar , Old Frisian wetir , Dutch water , Old High German wazzar , German Wasser , vatn , Gothic 𐍅𐌰𐍄𐍉 ( wato )), from Proto-Indo-European * wod-or , suffixed form of root * wed- ( ' water ' ; ' wet ' ). Also cognate , through

SECTION 60

#1732779640142

5456-545: The molecule an electrical dipole moment and it is classified as a polar molecule . Water is a good polar solvent , dissolving many salts and hydrophilic organic molecules such as sugars and simple alcohols such as ethanol . Water also dissolves many gases, such as oxygen and carbon dioxide —the latter giving the fizz of carbonated beverages, sparkling wines and beers. In addition, many substances in living organisms, such as proteins , DNA and polysaccharides , are dissolved in water. The interactions between water and

5544-416: The oceans and the atmosphere. The hydrogen bonds of water are around 23 kJ/mol (compared to a covalent O-H bond at 492 kJ/mol). Of this, it is estimated that 90% is attributable to electrostatics, while the remaining 10% is partially covalent. These bonds are the cause of water's high surface tension and capillary forces. The capillary action refers to the tendency of water to move up a narrow tube against

5632-482: The oceans may have always been on the Earth since the beginning of the planet's formation . Water ( H 2 O ) is a polar inorganic compound . At room temperature it is a tasteless and odorless liquid , nearly colorless with a hint of blue . The simplest hydrogen chalcogenide , it is by far the most studied chemical compound and is sometimes described as the "universal solvent" for its ability to dissolve more substances than any other liquid, though it

5720-536: The only substantial Gothic document that still exists – and the only lengthy text known to have been composed originally in the Gothic language – is the Skeireins , a few pages of commentary on the Gospel of John . Very few medieval secondary sources make reference to the Gothic language after about 800. In De incrementis ecclesiae Christianae (840–842), Walafrid Strabo , a Frankish monk who lived in Swabia , writes of

5808-572: The original Greek text as much as possible in his translation, it is known that he used the same writing conventions as those of contemporary Greek. Since the Greek of that period is well documented, it is possible to reconstruct much of Gothic pronunciation from translated texts. In addition, the way in which non-Greek names are transcribed in the Greek Bible and in Ulfilas's Bible is very informative. In general, Gothic consonants are devoiced at

5896-486: The oxygen atom at an angle of 104.45°. In liquid form, H 2 O is also called "water" at standard temperature and pressure . Because Earth's environment is relatively close to water's triple point , water exists on Earth as a solid , a liquid , and a gas . It forms precipitation in the form of rain and aerosols in the form of fog . Clouds consist of suspended droplets of water and ice , its solid state. When finely divided, crystalline ice may precipitate in

5984-435: The parts of the oceans below 1,000 metres (3,300 ft) of depth. The refractive index of liquid water (1.333 at 20 °C (68 °F)) is much higher than that of air (1.0), similar to those of alkanes and ethanol , but lower than those of glycerol (1.473), benzene (1.501), carbon disulfide (1.627), and common types of glass (1.4 to 1.6). The refraction index of ice (1.31) is lower than that of liquid water. In

6072-448: The presence of water in their mouths, and frogs are known to be able to smell it. However, water from ordinary sources (including mineral water ) usually has many dissolved substances that may give it varying tastes and odors. Humans and other animals have developed senses that enable them to evaluate the potability of water in order to avoid water that is too salty or putrid . Pure water is visibly blue due to absorption of light in

6160-435: The pressure is 400 atm, water suffers only a 1.8% decrease in volume. The viscosity of water is about 10 Pa· s or 0.01 poise at 20 °C (68 °F), and the speed of sound in liquid water ranges between 1,400 and 1,540 metres per second (4,600 and 5,100 ft/s) depending on temperature. Sound travels long distances in water with little attenuation , especially at low frequencies (roughly 0.03 dB /km for 1 k Hz ),

6248-404: The question word: Gothic has two clitic particles placed in the second position in a sentence, in accordance with Wackernagel's Law . One such clitic particle is - u , indicating a yes–no question or an indirect question, like Latin - ne : The prepositional phrase without the clitic - u appears as af þus silbin : the clitic causes the reversion of originally voiced fricatives, unvoiced at

6336-587: The rate of change of the melting temperature with pressure is given by the Clausius–Clapeyron relation : d T d P = T ( v L − v S ) L f {\displaystyle {\frac {dT}{dP}}={\frac {T\left(v_{\text{L}}-v_{\text{S}}\right)}{L_{\text{f}}}}} where v L {\displaystyle v_{\text{L}}} and v S {\displaystyle v_{\text{S}}} are

6424-569: The region around 3,500 cm (2.85 μm) a path length of about 25 μm is needed. Also, the cuvette must be both transparent around 3500 cm and insoluble in water; calcium fluoride is one material that is in common use for the cuvette windows with aqueous solutions. The Raman-active fundamental vibrations may be observed with, for example, a 1 cm sample cell. Aquatic plants , algae , and other photosynthetic organisms can live in water up to hundreds of meters deep, because sunlight can reach them. Practically no sunlight reaches

6512-459: The region c. 600–800 nm. The color can be easily observed in a glass of tap-water placed against a pure white background, in daylight. The principal absorption bands responsible for the color are overtones of the O–H stretching vibrations . The apparent intensity of the color increases with the depth of the water column, following Beer's law . This also applies, for example, with a swimming pool when

6600-419: The root with the first consonant in the root plus aí ) but without adding a suffix in either case. This parallels the Greek and Sanskrit perfects . The dichotomy is still present in modern Germanic languages: Verbal conjugation in Gothic have two grammatical voices : the active and the medial; three numbers: singular, dual (except in the third person) and plural; two tenses: present and preterite (derived from

6688-413: The subunits of these biomacromolecules shape protein folding , DNA base pairing , and other phenomena crucial to life ( hydrophobic effect ). Many organic substances (such as fats and oils and alkanes ) are hydrophobic , that is, insoluble in water. Many inorganic substances are insoluble too, including most metal oxides , sulfides , and silicates . Because of its polarity, a molecule of water in

6776-487: The surface of a planet is called the hydrosphere . Earth's approximate water volume (the total water supply of the world) is 1.386 billion cubic kilometres (333 million cubic miles). Liquid water is found in bodies of water , such as an ocean, sea, lake, river, stream, canal , pond, or puddle . The majority of water on Earth is seawater . Water is also present in the atmosphere in solid, liquid, and vapor states. It also exists as groundwater in aquifers . Water

6864-536: The surface temperature of 230 °C (446 °F) due to the increased atmospheric pressure of the CO 2 atmosphere. As the cooling continued, most CO 2 was removed from the atmosphere by subduction and dissolution in ocean water, but levels oscillated wildly as new surface and mantle cycles appeared. Geological evidence also helps constrain the time frame for liquid water existing on Earth. A sample of pillow basalt (a type of rock formed during an underwater eruption)

6952-590: The texts. These are the primary sources: Reports of the discovery of other parts of Ulfilas's Bible have not been substantiated. Heinrich May in 1968 claimed to have found in England twelve leaves of a palimpsest containing parts of the Gospel of Matthew . Only fragments of the Gothic translation of the Bible have been preserved. The translation was apparently done in the Balkans region by people in close contact with Greek Christian culture. The Gothic Bible apparently

7040-458: The type of Indo-European conjugation called ' thematic ' because they insert a vowel derived from the reconstructed proto-Indo-European phonemes *e or *o between roots and inflexional suffixes. The pattern is also present in Greek and Latin: The other conjugation, called ' athematic ', in which suffixes are added directly to roots, exists only in unproductive vestigial forms in Gothic, just like in Greek and Latin. The most important such instance

7128-456: The upper atmosphere. As the pressure increases, ice forms other crystal structures . As of 2024, twenty have been experimentally confirmed and several more are predicted theoretically. The eighteenth form of ice, ice XVIII , a face-centred-cubic, superionic ice phase, was discovered when a droplet of water was subject to a shock wave that raised the water's pressure to millions of atmospheres and its temperature to thousands of degrees, resulting in

7216-520: The voicing of diz- ), ga-u-ƕa-sēƕi "whether he saw anything" from gasēƕi "he saw". For the most part, Gothic is known to be significantly closer to Proto-Germanic than any other Germanic language except for that of the (scantily attested) Ancient Nordic runic inscriptions, which has made it invaluable in the reconstruction of Proto-Germanic . In fact, Gothic tends to serve as the primary foundation for reconstructing Proto-Germanic . The reconstructed Proto-Germanic conflicts with Gothic only when there

7304-438: The winter. Water is a diamagnetic material. Though interaction is weak, with superconducting magnets it can attain a notable interaction. At a pressure of one atmosphere (atm), ice melts or water freezes (solidifies) at 0 °C (32 °F) and water boils or vapor condenses at 100 °C (212 °F). However, even below the boiling point, water can change to vapor at its surface by evaporation (vaporization throughout

7392-507: Was derived from the Greek alphabet only while others maintain that there are some Gothic letters of Runic or Latin origin. A standardized system is used for transliterating Gothic words into the Latin script . The system mirrors the conventions of the native alphabet, such as writing long /iː/ as ei . The Goths used their equivalents of e and o alone only for long higher vowels, using

7480-805: Was recovered from the Isua Greenstone Belt and provides evidence that water existed on Earth 3.8 billion years ago. In the Nuvvuagittuq Greenstone Belt , Quebec, Canada, rocks dated at 3.8 billion years old by one study and 4.28 billion years old by another show evidence of the presence of water at these ages. If oceans existed earlier than this, any geological evidence has yet to be discovered (which may be because such potential evidence has been destroyed by geological processes like crustal recycling ). More recently, in August 2020, researchers reported that sufficient water to fill

7568-526: Was reinterpreted as present tense. The Gothic word wáit , from the proto-Indo-European *woid-h 2 e ("to see" in the perfect), corresponds exactly to its Sanskrit cognate véda and in Greek to ϝοἶδα. Both etymologically should mean "I have seen" (in the perfect sense) but mean "I know" (in the preterite-present meaning). Latin follows the same rule with nōuī ("I have learned" and "I know"). The preterite-present verbs include áigan ("to possess") and kunnan ("to know") among others. The word order of Gothic

7656-538: Was sometimes identical to the nominative and sometimes to the accusative. The three genders of Indo-European were all present. Nouns and adjectives were inflected according to one of two grammatical numbers : the singular and the plural. Nouns can be divided into numerous declensions according to the form of the stem: a , ō , i , u , an , ōn , ein , r , etc. Adjectives have two variants, indefinite and definite (sometimes indeterminate and determinate ), with definite adjectives normally used in combination with

7744-576: Was used by the Visigoths in Occitania until the loss of Visigothic Occitania at the start of the 6th century, in Visigothic Iberia until about 700, and perhaps for a time in Italy, the Balkans, and Ukraine until at least the mid-9th century. During the extermination of Arianism , Trinitarian Christians probably overwrote many texts in Gothic as palimpsests, or alternatively collected and burned Gothic documents. Apart from biblical texts,

#141858