Space Unit Review

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Across
  1. 4. Made of gas, with thick atmospheres
  2. 9. this planet is known for its many rings
  3. 12. a type of celestial body that emits light
  4. 13. concerns about personal health, cost of technology, and lack of gravity are examples of ________ to living and working in space
  5. 14. planets differ in their _________ conditions
  6. 15. are natural objects found in space beyond Earth’s atmosphere
  7. 19. orbit around Earth gathering and sending information
  8. 21. natural satellites orbiting planets
  9. 22. Pluto is now classified as this
  10. 23. Celestial bodies emit or __________ light
  11. 24. The path an object follows around another object in space
Down
  1. 1. center of our solar system
  2. 2. Solid, rocky, dense
  3. 3. This asteroid belt is beyond Neptune
  4. 5. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  5. 6. The main asteroid belt is between Mars and __________
  6. 7. The International Space Station (ISS) is a _________ facility that orbits Earth.
  7. 8. This force pulls an object toward the larger body
  8. 10. ___________, comets, and meteoroids have many similarities
  9. 11. unmanned spacecraft exploring space
  10. 13. Dwarf planets are similar to planets but do not _______ their orbits
  11. 16. this space technology can be ground-based or space-based
  12. 17. inner planets and outer planets have different __________
  13. 18. robotic vehicles on planets like Mars
  14. 20. closest planet to the sun