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52 Cards in this Set
- Front
- Back
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Most common elements in the solar system: |
Hydrogen, Helium, Carbon, Nitrogen, Oxygen. |
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Mars "canals" |
Don't exist: optical illusion |
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Mars color |
Orange-red |
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Mars impact basins: |
Basically just big craters, biggest on Mars: Hellas |
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Mars volcanoes |
Shield volcanoes, stay over hotspots: evidence Mars lacks plate tectonics. Biggest: Olympus Mons |
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Mars atmosphere |
Thin, 90% carbon dioxide, 2% argon, 2% nitrogen. |
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Uranus discovery date |
1781 |
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Neptune discovery date |
1846 |
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Pluto discovery date |
1930 |
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Comet impact on Jupiter |
Shoemaker-Levy 9, discovered 1993, impacted 1994. |
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Saturns active moons |
Titan and Enceladus |
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Jupiters active moons |
Io and Europa |
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Neptunes active moons |
Triton |
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Plutos active moons |
Charon |
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Active geology?: Venus |
Maybe |
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Active geology?: Mercury |
No |
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Active geology?: Mars |
Wind erosion, maybe in the past. |
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Active geology?: Pluto |
YES |
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Meteorites: Siderites |
Metallic (Fe&Ni) |
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Meteorites: Siderolites |
Rocky and metallic |
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Meteorites: Chondrites |
Rocky (most common!) |
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Meteorites are... |
...fragments from asteroids. |
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Comets: nucleus |
Coated in ice and dust |
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Comets: coma |
"Cloud" of evaporated ice and dust when comet gets close to sun. |
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Comets: tail |
Away from sun because of solar winds, longer because of coma. |
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Asteroids: largest object in belt |
Ceres (600mi across) |
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Asteroids: ~10% |
Metallic |
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Asteroids: ~15% |
Rocky |
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Asteroids: ~75% |
Carbonaceous (most common!) |
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Closest to sun |
Mercury |
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Farthest from sun |
Pluto (Neptune) |
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Largest planet in solar system |
Jupiter |
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Smallest planet in the solar system |
Pluto (Mercury) |
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Planets with ring systems |
Saturn, Uranus, Neptune, (Jupiter kinda) |
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Fastest rotation |
Jupiter |
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Planets with no moons |
Mercury and Venus |
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Most orbital tilt |
Pluto, 17° |
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Most axial tilt |
Uranus, 98° |
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Ring system particles |
Small: dust, rocks, icey bits Ring systems are inside the Roche limit. |
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Roche limit |
The limit of how close something can get to a planet without being torn apart. |
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Lagrangian point |
The 5 points on a single orbit in which different objects can be placed and still remain gravitationally stable. Co-orbital moons |
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Main asteroid belt |
Between Mars and Jupiter |
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Kuiper asteroid belt |
Icy objects, between Neptune and Pluto |
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Apollo asteroids |
Asteroids that cross into Earths orbit. |
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Trojan asteroids |
Asteroids that are co-orbital with planets |
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Venus atmosphere |
97% carbon dioxide, 3% Nitrogen |
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Circular/oval spots on outer planets |
Storm systems in the clouds |
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"Belts" in the outer planets atmospheres |
Occour because the atmospheres move fast. |
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Characteristics of atmospheres |
Needs a large mass for gravity, active geology, temperature (on the colder side) |
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Tunguska event |
Comet hit earth in Siberia in 1908, flattened a bunch of trees. |
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Planets without moons |
Venus and Mercury |
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Slowest rotation |
Venus |
