Friday 8/25 Benchmark 1 Review

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Across
  1. 5. This word means able to support life
  2. 7. Planets need liquid water and this in order to be habitable
  3. 9. Mercury, Venus, Earth and Mars are inner planets and made of this
  4. 10. This geologic process formed the channel on Mars
  5. 11. This type of rock was found near the Mars channel and is formed by sediment moved by flowing water
Down
  1. 1. All the liquid water and ice on a planet
  2. 2. The mixture of gases surrounding a planet
  3. 3. This is one way that scientists can study the landforms, called novae, on Venus
  4. 4. These are made of gas and ice, Neptune is an example
  5. 6. The solid part or land of a rocky planet
  6. 8. A set of interacting parts that form a complex whole