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About 71% of ____ is covered by water.
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1. Mercury
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____ and Venus are the only planets with no moons.
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2. Venus
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The presence of ____ was mathematically predicted in 1846.
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3. Earth
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____ has polar ice caps made of frozen water and CO2 (dry ice).
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4. Mars
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The Great Red Spot on ____ is a massive persistent windstorm.
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5. Jupiter
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Due to a runaway greenhouse effect, ____ is the hottest planet.
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6. Saturn
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Titan is the largest of the 285 known moons orbiting ____.
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7. Uranus
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____ is tilted on its side, causing extreme seasonal changes.
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8. Neptune
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