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Planets
Unit 10
Question | Answer |
---|---|
Mercury | 1st planet from the sun; smallest of the planets; lots of craters like Earth's moon; shortest revolution; takes about 2 Earth months to rotate once |
Venus | 2nd planet from the sun; hottest planet due to strong greenhouse effect; many volcanoes; Earth's twin based on size; rotates backwards; 243 days to rotate once |
Earth | 3rd planet from the sun; only planet with life as we know it; mostly liquid water |
Mars | 4th planet from the sun; the "red" planet due to rust on the surface; second smallest planet |
Jupiter | 5th planet from the sun; largest planet in our solar system; very strong gravity; Great Red Spot; the moon Europa may have liquid water |
Saturn | 6th planet from the sun; very thick rings |
Uranus | 7th planet from the sun; tilted on its side |
Neptune | 8th planet from the sun; once had a Great Dark Spot; visible clouds in atmosphere |
Pluto | Dwarf planet; has three moons |