Terrestrial Planets Crossword

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Across
  1. 7. One of Earth’s special features is that it has 5m-30m _____ living on it.
  2. 8. This planet’s surface has volcanoes, lava, craters, and rocks.
  3. 9. Venus’ _____ takes 243 days.
  4. 12. Earth’s _____ takes 365.3 days.
  5. 13. Mercury is the planet closest to the _____.
  6. 15. What planet’s atmosphere is made of oxygen, CO2, and nitrogen.
  7. 16. This planet’s surface has highlands and plains.
Down
  1. 1. Venus is the _____ planet of the terrestrial planets.
  2. 2. Mars’ revolution takes 1.88 _____.
  3. 3. Mercury’s rotation takes 58 _____/55 hours.
  4. 4. Mercury’s surface can reach extreme _____.
  5. 5. Earth’s surface is divided into _____ plates.
  6. 6. This planet has very little to no atmosphere at all.
  7. 10. Mars’s atmosphere is 100 times _____ than Earth.
  8. 11. Venus’ atmosphere is made of toxic sulfuric acid and _____.
  9. 14. Mars has Olympus _____ which is the largest volcano.