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- Ernest William Brown (1403 bytes)
3: ...ed extremely accurate lunar tables. He also calculated the orbits of [[Trojan asteroid]]s.
7: A [[crater]] on the [[Moon]] is named after him, as is the [... - Archimedes (13735 bytes)
1: ... despite orders from the Roman general, [[Marcus Claudius Marcellus|Marcellus]], that he was not to be...
4: ....com Classroom Clip Art]]]Archimedes became a popular figure as a result of his involvement in the def...
6: ...f Syracuse against the invading Romans was the [[claw of Archimedes]].
8: ...acking ships causing them to catch fire. This popular legend was tested on the Discovery Channel's ''M...
12: ...m the vertex to the base. The vertex must be so placed that the two horizontal distances mentioned in... - Roald Amundsen (8034 bytes)
3: ...[1928]]) was a [[Norway|Norwegian]] explorer of polar regions. He led the Antarctic expedition of [[19...
6: ...pired by [[Fridtjof Nansen]]'s crossing of [[Greenland]] in [[1888]] he decided on a life of explorati...
10: ...h;[[1899]]) as second mate. Led by [[Adrien de Gerlache]], their ship the [[Belgica]] became the first...
12: ...two winters exploring over land and ice from the place today called [[Gjoa Haven, Nunavut|Gjoa Haven]]...
14: ...906]]. Due to water as shallow as 3 feet (1 m), a larger ship could never have used the route. - Honolulu, Hawaii (19495 bytes)
1: {{Template:US City infobox|
5: flag = Honoluluflag2.PNG |
25: ...y & County of Honolulu]] encompasses all of the Island of O‘ahu (approximately 600 square miles)...
29: ... [[California Current]] that passes through the islands much of year. The average daily low and high t...
33: ...n crosses Red Hill and runs just west of Aliamanu Crater, so that [[Aloha Stadium]], [[Pearl Harbor]], and... - Johann Gottfried Galle (1693 bytes)
1: ...p from [[Urbain Le Verrier]], sighted [[Neptune (planet)|Neptune]] on [[September 23]], [[1846]].
4: in [[1851]] he moved to Breslau (now [[Wrocław]]) to become professor of as...
8: ...s]], and a [[planetary ring|ring]] of [[Neptune (planet)|Neptune]], were named in his honor.
11: ...ky to find a predicted new planet, which would explain the perturbations of Uranus.
12: ...ption was found, and it was confirmed as being a planet over the next two evenings. - Geyser (14881 bytes)
2: ...he name of an erupting spring at Haukadalur, [[Iceland]]; that name, in turn, comes from the verb ''gj...
4: ...able [[hydrogeology]] which exists in only a few places on Earth, and so they are fairly rare phenomen...
6: .... On Triton, the geysers appear to be driven by solar heating instead of geothermal energy. The [[nit...
14: ... this release of pressure, the superheated water flashes into [[steam]], boiling violently throughout ...
16: ...greatly from geyser to geyser; [[Strokkur]] in Iceland erupts for a few seconds every few minutes, whi... - Yellowstone National Park (23738 bytes)
25: ...temperate zone]] [[ecosystems]] remaining on the planet.
27: ... changes could have resulted in the worldwide population of humans falling to as little as 10,000 indi...
29: ...e Yellowstone]] - a deep gash in the Yellowstone Plateau that was formed by floods during previous [[i...
34: ...sippi Valley]] which strongly indicate that a regular [[obsidian trade]] existed between Yellowstone N...
37: ... and Blackfoot tribes he gave a description of a place of "fire and brimstone" that was dismissed by m... - Death Valley National Park (38245 bytes)
1: ...ea level]]. It is also home to many species of [[plant]]s and [[animal]]s that have adapted to this ha...
3: ...ey National Monument''' was created in [[1933]], placing the area under some protection. In [[1994]], ...
5: ... times of [[ice age]]s, with [[lake]]s, such as [[Lake Manly]].
9: ...Death Valley which causes a slight widening and relatively more subsidence there.
36: ...hape ends at a slot canyon half way down with a relatively small and steep alluvial fan for the stream... - Moon (37975 bytes)
2: ...t:right; margin: 0 0 1em 1em; border-collapse: collapse;"
56: ...6.2 km [http://www.onasch.de/astro/showobject.php?lang=en&head=f&anim=129&obj=p03m01]<br />(0.273 Eart...
58: ! align="left" | Polar diameter
61: ! align="left" | [[Oblateness]]
190: ... although it is occasionally called '''Luna''' ([[Latin]] for ''moon'') to distinguish it from the gen... - Lake (11397 bytes)
1: ...a]]s" and small seas are sometimes referred to as lakes.
3: ...under seasonal conditions of heavy rainfall. Many lakes are artificial and are constructed for [[hydro...
5: ...s ''The Land of Ten Thousand Lakes''. The [[Great Lakes]] of [[North America]] originated in the ice a...
6: Over 60% of the world's lakes are in Canada; this is because of the [[derang...
8: ==Origin of natural lakes== - Sulfur (18059 bytes)
1: ... below=[[selenium|Se]] | color1=#a0ffa0 | color2=black }}
8: ...x_section_physicalprop | color1=#a0ffa0 | color2=black }}
20: ...box_section_atomicprop | color1=#a0ffa0 | color2=black }}
29: ..._section_miscellaneous | color1=#a0ffa0 | color2=black }}
36: ...in | isotopesof=sulfur | color1=#a0ffa0 | color2=black }} - Caldera (4953 bytes)
2: ...lakes. The word 'caldera' comes from a [[Spanish language|Spanish]] word meaning "cauldron".
5: ...of a series of eruptions. The total amount of collapse may be hundreds or thousands of meters.
8: ...noticeable drop in temperature around the world. Large calderas may have even greater effects.
10: ...f the massive walls of the Caldera de Taburiente, La Palma: a caldera formed by erosion]]
12: ... a few thousand individuals, resulting in a [[population bottleneck]] (''see'' [[Toba catastrophe theo... - Eratosthenes (4241 bytes)
5: ...xandria]]. He is noted for devising a system of [[latitude]] and [[longitude]] and [[computing]] the s...
7: ...medes]]. Around [[255 BC]] he invented the [[armillary sphere]], which was widely used until the inven...
9: ...a and [[Syene]] (now [[Aswan]], Egypt). The calculation is based on the assumption that the Earth is ...
11: ...method was used by [[Posidonius]] about 150 years later.
23: ...ake more accurate maps in the classical and post classical world. - Hipparchus (astronomer) (50785 bytes)
2: ... the [[Hipparchus (Lunar crater)|Hipparchus lunar crater]] and the [[asteroid]] [[4000 Hipparchus]].
4: ...onomical poem by [[Aratus]] has been preserved by later copyists. As a consequence, we know comparati...
14: ...but it is not known if and when he visited these places.
18: ... island of [[Rhodes]], where he spent most of his later life — Ptolemy attributes observations t...
20: ...stellations: the globe carried by the [[Farnese Atlas]] [Schaefer 2005]. - Antlion (5460 bytes)
2: ...ult antlion resting, perfectly camoflaged on the plank}}
3: {{Taxobox_begin_placement | color = pink }}
6: {{Taxobox_classis_entry | taxon = [[Insect]]a}}
7: {{Taxobox_subclassis_entry | taxon = [[Myrientomata]]}}
9: {{Taxobox_subordo_entry | taxon = [[Planipennia]]}} - Pigeons (23097 bytes)
2: ...Alternate meaings include [[River Dove]], [[Dove (crater)]], and [[Dove (soap)]]''
5: ...40px]] | caption = [[Peaceful Dove]] (''Geopelia placida'')}}
6: {{Taxobox_begin_placement | color = pink}}
9: {{Taxobox_classis_entry | taxon = [[Bird|Aves]]}}
12: {{Taxobox_end_placement}} - Hipparchus (50784 bytes)
1: ... the [[Hipparchus (Lunar crater)|Hipparchus lunar crater]] and the [[asteroid]] [[4000 Hipparchus]].
3: ...onomical poem by [[Aratus]] has been preserved by later copyists. As a consequence, we know comparati...
13: ...but it is not known if and when he visited these places.
17: ... island of [[Rhodes]], where he spent most of his later life — Ptolemy attributes observations t...
19: ...stellations: the globe carried by the [[Farnese Atlas]] [Schaefer 2005]. - Lava flow (9578 bytes)
4: <div class="noprint" style="clear: right; border: solid #a...
6: ...argin-left: 60px;">Look up '''''[[wiktionary:Lava|Lava]]''''', '''''[[wiktionary:Aa|‘A‘a]]...
9: ...0�F to 2200�F). However, the [[viscosity]] of lava is 100,000 times that of water. Nevertheless, t...
11: ...in analogy to the flow of water and mud down the flanks of the volcano following heavy rain.
12: ...iginal.jpg|thumb|right|250px|10m high fountain of lava]] - Pterosaurs (10375 bytes)
5: {{Taxobox_begin_placement | color = pink}}
9: {{Taxobox_classis_entry | taxon = [[Archosaur|Archosauria]]}}
11: {{Taxobox_end_placement}}
16: ...gated jaw of the earlier species. Pterosaurs are classified as [[Archosauria|archosaurs]], along with ...
22: ... first pterosaur [[fossil]] was discovered in the late Jurassic [[Solnhofen limestone]] in [[1784]], t... - Wonders of the Ancient World (11560 bytes)
1: ...piled over the ages to catalogue the most spectacular man-made constructions and natural things in the...
3: ...cal antiquity]], and was based on guide-books popular among [[Ancient Greece|Hellenic]] sight-seers an...
4: Many similar lists have been made, including lists for the Me...
8: ...erodotus]] (484 BC–ca. 425 BC), and the scholar [[Callimachus]] of [[Cyrene]] (ca 305–240 ...
20: ...umata''"(Greek: '''Θαύματα'''), which translates closer to "things to be seen". The list that w...
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