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- Steel (28384 bytes)
3: ...up to 5.1 percent [[carbon]]; ironically, alloys with higher carbon content than this are known as [[c...
5: ...steels are iron-based alloys that can be [[plasticity (physics)|plastically]] formed (pounded, rolled,...
8: ...ke copper and tin, liquid iron dissolves carbon quite readily, so that smelting results in an alloy co...
11: ...pearance, or the similar but less beautiful [[bainite]].
13: ...cal composition. As such, it requires extremely little thermal [[activation energy]] to form. - Age of the Earth (20052 bytes)
1: ...ation of the Ca-Al-rich inclusions and the meteorites. Since the accretion time of the Earth is not e...
6: ... the Earth and [[universe]] had existed from eternity.
11: ...embled the Earth in composition and then measured its rate of cooling. This led him to estimate that t...
13: ...at the Earth had been through many changes during its existence, however long that might be.
15: ...ffering locations contained similar fossils, then it was very plausible that the layers were the same ... - Iron Age (8996 bytes)
3: ...ent. The adoption of this new material coincided with other changes in past societies often including ...
5: ...n Europe and Asia whilst in the rest of the world it was adopted directly after one or other sub-phase...
7: ... "cheaper" than bronze and contributed greatly to its adoption as the most commonly used metal. The ar...
10: ... being fashioned from iron recovered from [[meteorite]]s (see [[Iron#History|Iron: History]]). By [[30...
13: ...xcavation of [[Ugarit]] (see [[Ugarit#History|Ugarit: History]] and [[Steel#History of iron and steelm... - Dinosaur (35313 bytes)
2: ...[Tyrannosaurus rex|T. Rex]]'' from the <br /> [[United States Department of the Interior|U.S. Departme...
7: ...y | taxon = '''Dinosauria'''}}<br>{{Taxobox_authority | author = [[Richard Owen|Owen]] | date = [[1842...
13: [[Ornithischia]]<br/>
16: ...zed [[bone]]s, [[feces]], [[trackway]]s, [[gastrolith]]s, [[feather]]s, impressions of skin and intern...
20: ..., with major new discoveries in previously unexploited regions, including [[South America]], [[Madagas... - Venus (planet) (31010 bytes)
1: ...rcular]], with an [[eccentricity (orbit)|eccentricity]] of less than 1%.
3: ...ing Star]]", and when it is visible in dark skies it is by far the brightest [[star]]-like object in t...
5: ...ion of the goddess Venus's hand mirror: a circle with a small cross underneath ([[Unicode]]: ♀)...
7: ...e of its modern association with [[sexually transmitted disease]]s. Some astronomers use ''[[Cytherea...
14: ... between the night and day sides of Venus despite its extremely slow rotation (less than one rotation ... - Mars (27704 bytes)
1: [[Image:Mars.jpg|thumb|right|Mars, with polar ice caps visible.]]
2: ...A00161 modest.jpg|thumb|right|North Polar region with icecap. (Courtesy NASA/JPL-Caltech.)]]
4: ...of "the Red Planet." Mars has two [[Natural satellite|moon]]s ([[Phobos (moon)|Phobos]] and [[Deimos (...
6: ...ircle with a small arrow pointing out from behind it), is a stylized representation of the god [[Mars ...
8: ...[solar day]] on Mars is almost the same length as it is on earth: 24 hours, 39 minutes, and 35.244 sec... - Tsunami (29462 bytes)
2: ...ide]]s, [[volcanic eruption]]s and large [[meteorite impact]]s all have the potential to generate a t...
4: ...eep [[ocean]]; it simply has a much smaller [[amplitude]] (wave heights) offshore, and a very long [[w...
6: ...ed to tides the term is considered misleading and its usage is discouraged by [[oceanographer|oceanogr...
10: ...ami by itself may trigger an undersea landslide quite capable of generating a tsunami.
16: ...oves under the influence of [[gravity]] to regain its equilibrium and radiates across the ocean like r... - Prokaryote (4630 bytes)
1: ...re of prokaryotes and eukaryotes is so great that it is considered to be the most important distinctio...
4: ...e]]s, [[endoplasmic reticulum]], [[mitochondrion|mitochondria]] and [[chloroplast]]s. In eukaryotes, ...
6: ...relia burgdorferi]]'') [[chromosome]], contained within a region called ''nucleoid'', rather than in a...
11: ...rsh conditions, such as high temperatures or salinity. Organisms such as these are referred to as [[e...
16: ...ave suggested structures within a Martian [[meteorite]] should be interpreted as fossil prokaryotes, b... - Moon (37975 bytes)
7: <small><font color="white">The Moon as seen from Earth</font></small>
9: ! bgcolor="#ffc0c0" colspan="2" | [[Orbit]]al characteristics
12: ...00 [[kilometre|km]]<br />(0.0026 [[Astronomical unit|AU]])
14: ! align="left" | Orbital [[circumference]]
17: ! align="left" | [[Eccentricity (orbit)|Eccentricity]] - Carbon (15360 bytes)
5: * [[graphite]] (one of the softest substances). Structure: ea...
7: * [[ceraphite]] (an extremely soft surface). The structure is ...
8: * [[lonsdaleite]] (a corruption of [[diamond]]). Structure: simi...
10: ...gnetic web). Structure: a low-density web of graphite-like clusters, in which the atoms are bonded tri...
13: Lamp black consists of small graphitic areas. These areas are randomly distributed, so... - Graphite (4209 bytes)
3: !colspan=2 align=center|Graphite
5: ...pan=2|[[Image:GraphiteUSGOV.jpg|thumb|center|Graphite]]
17: | [[Crystal habit]] || Tabular, six-sided [[foliated]] masses, gran...
35: | [[Density]]|| 2.09–2.23 g/cm³
37: | [[Fusibility]]|| ? - Iron (23778 bytes)
1: <!-- Here is a table of data; skip past it to edit the text. -->
19: ...es]] </td><td>[[transition metal]]</td></tr>
24: <td>[[Density]], [[Mohs hardness scale|Hardness]] </td>
28: <td align="center">lustrous metallic <br>with a greyish tinge<br>[[Image:Fe,26.jpg|125px|]]</t...
32: ... </td><td>55.845 [[Atomic mass unit|amu]]</td></tr> - Magnesium (9193 bytes)
2: ...e [[Earth]]'s crust by weight (Gardner,2005), and it is the third most plentiful element dissolved in ...
4: ... to burn in both [[nitrogen]] (forming magnesium nitride), and [[carbon dioxide]].
7: ... use is as an alloying additive to [[aluminium]] with these aluminium-magnesium alloys being used main...
10: ...sium, like [[aluminium]], is strong and light, so it is used in several high volume automotive and tru...
14: ...al propellants and used in producing nodular graphite in cast iron. - Aluminium (26079 bytes)
10: {{Elementbox_density_gpcm3nrt | 2.70 }}
11: {{Elementbox_densityliq_gpcm3mp | 2.375 }}
16: {{Elementbox_heatcapacity_jpmolkat25 | 24.200 }}
41: ...s|7.17×10<sup>5</sup>]][[year|y]] | dm=[[Positron emission|β<sup>+</sup>]] | de=1.17 | pn=2...
48: ...]ation and building in which light weight, durability, and strength are needed. - Manganese (14965 bytes)
1: <!-- Here is a table of data; skip past it to edit the text. -->
16: ...es]] </td><td>[[transition metal]]s</td></tr>
20: <td>[[Density]], [[Mohs hardness scale|Hardness]] </td><td>...
45: ... </td><td>1517 [[Kelvin|K]] (2271 ?[[Fahrenheit|F]])</td></tr>
57: <td>[[Velocity of sound]] </td><td>5... - Neon (6321 bytes)
14: {{Elementbox_heatcapacity_jpmolkat25 | 20.786 }}
38: ...on a per unit volume basis). In most applications it is a less expensive [[refrigerant]] than helium. ...
41: ...generically for these types of lights when in reality many other gases are used to produce different c...
55: ... air and fractionally [[distillation|distilling]] it from the resulting cryogenic liquid.
58: ...spectrometry|mass spectrometric]] research. In addition, neon forms an unstable [[hydrate]]. - Nickel (13955 bytes)
1: <!-- Skip down past this table to edit the text. -->
19: |[[transition metal]]s
24: |[[Density]], [[Mohs hardness scale|Hardness]]
62: |1728 [[kelvin|K]] (2651 ?[[Fahrenheit|F]])
79: |[[Velocity of sound]] - Osmium (11139 bytes)
1: <!-- Here is a table of data; skip past it to edit the text. -->
19: ...es]] </td><td>[[transition metal]]s</td></tr>
23: <td>[[Density]], [[Mohs hardness scale|Hardness]] </td><td>...
29: ... </td><td>190.23 [[Atomic mass unit|amu]]</td></tr>
37: ...[[f-orbital|f]]<sup>14</sup>5d<sup>6</sup>6[[s-orbital|s]]<sup>2</sup></td></tr> - Palladium (9737 bytes)
1: <!-- Here is a table of data; skip past it to edit the text. -->
20: | [[Transition metal]]s
25: | [[Density]], [[Mohs hardness scale|Hardness]]
29: | align="center" | Silvery white metallic<br>[[Image:Pd,46.jpg|125px|]]
63: | 1828.05 [[Kelvin|K]] (2830.82 ?[[Fahrenheit|F]]) - Silver (15157 bytes)
1: <!-- Here is a table of data; skip past it to edit the text. -->
19: | [[Transition metal]]s
24: | [[Density]], [[Mohs hardness scale|Hardness]]
28: | align="center" | Lustrous white metal<br/>[[Image:Ag,47.jpg|125px|]]
45: ...ton|Kr]]<nowiki>]</nowiki>4d<sup>10</sup> 5[[s-orbital|s]]<sup>1</sup>
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