Planetary Motion and The Inner Planets

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Across
  1. 4. Mercury, Venus, Earth, and Mars are rocky or _____ planets
  2. 6. Kepler's _____ law states that planets move faster when closer to the sun due to gravitational pull.
  3. 7. What planets is similar in size to ours but has a very hot surface temperature
  4. 10. An __________unit is the distance between the Earth and the sun
  5. 11. Earth is the_______ planet from the sun
  6. 12. ________ theory is a hypothesis that states the solar system formed from a huge cloud of gas, ice, and dust.
  7. 14. Which planet closest to the sun?
  8. 15. Which planet is called the red planet due to iron oxide?
  9. 16. Mars has ____moons
  10. 18. __________planets are called rocky planets
  11. 19. the __________ effect makes the surface of Venus hotter
Down
  1. 1. What model of the solar system has Earth placed in the center and other planets and the sun orbit around it?
  2. 2. ___________are organisms that can be found in extreme environments
  3. 3. Mercury’s surface is highly ______
  4. 5. Jovian planets like Jupiter are _____________
  5. 8. Scientists study ____________ focusing on finding potential signs of life on planets outside our Solar system
  6. 9. _______ ice caps on Mars are made of mostly water and CO2
  7. 13. What model of the solar system has the sun placed in the center and other and the Earth and other planets orbit around it?
  8. 15. ______ on found on Earth provide attention information on Mars’s composition
  9. 17. What planet is unique to our solar system because it supports life