Unit 1 Test Review

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Across
  1. 6. Model-Earth and other planets orbiting Sun
  2. 8. Proposed Heliocentric model
  3. 11. Measures distance between planets and sun
  4. 12. The universe is _________.
  5. 13. Proposed Geocentric model
  6. 16. Ice, dust, and gas in large elliptical orbit
  7. 18. Called the red planet
  8. 19. Another nickname for inner planets
  9. 20. Model-Sun and other planets orbiting Earth
  10. 21. Famous comet that comes near Earth every 75-76 years
  11. 22. Hottest planet
  12. 23. Name of our galaxy
  13. 26. Movement of one object around another
  14. 28. Force that holds planets in orbit around the Sun
  15. 29. Huge group of stars, dust, gas, and planets held together by gravity
  16. 31. Largest space rock found between Mars and Jupiter
  17. 32. Largest galaxy neighbor
Down
  1. 1. Largest planet with Great Red Spot
  2. 2. Called a shooting star
  3. 3. Proposed Law of Universal Gravitation
  4. 4. A meteoroid that survives the atmosphere and lands on surface.
  5. 5. Everything in space
  6. 7. Large, spherical object orbiting a star
  7. 9. All planets and other objects orbiting a star
  8. 10. Discovered 4 moons orbiting Jupiter
  9. 11. A meteor is located in Earth's ________.
  10. 14. Spin on its axis, Gives us a day
  11. 15. Discovered a planet's orbit is elliptical
  12. 17. The shape of the planet's orbit.
  13. 24. Smallest space rock floating in space.
  14. 25. Theory for creation of the Universe
  15. 27. The discovery of Jupiter's moons show that other object _____ planets other than Earth.
  16. 30. Direction a comet points in relation to Sun