The Solar System

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Across
  1. 4. small rocky object that orbits the sun in the asteroid belt between Mars and Jupiter
  2. 6. object made of gas dust and ice that moves around the Sun in an oval shaped orbit
  3. 8. round depression formed by the impact of a meteorite on the surface of a planet moon or other space object
  4. 9. examination
  5. 10. path an object follows as it moves around another object
  6. 11. meteroid that strikes a planet or moon
  7. 12. average distance from Earth to the Sun about 150 million km
  8. 13. four largest moons of Jupiter
  9. 15. time it takes an object to travel once around the sun
Down
  1. 1. inner planet that is made of rock and metallic materials and has a solid outer layer
  2. 2. streak of light in Earth's atmosphere made by a glowing meteroid
  3. 3. when a planet's atmosphere traps solar energy and causes the surface temperature to increase
  4. 5. time it takes an object to complete on rotation
  5. 7. object in space made of gases in which nuclear fusion reactions occur that emit energy
  6. 14. small rocky particle that moves through space