Week 18 Science Quiz

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Across
  1. 9. a type of planet with a center core of hot and melted metal
  2. 11. larger pieces of rock that orbit the sun
  3. 13. a type of invisible energy from the sun that we need
  4. 14. small rocks that orbit the sun and occasionally enter Earth's atmosphere
Down
  1. 1. the collection of planets and other objects that move in a path around a star
  2. 2. spin
  3. 3. planets that are large and made mostly of ice
  4. 4. the path around a body with gravity
  5. 5. a tool that helps us see distant objects more clearly
  6. 6. the force that pulls all objects toward each other
  7. 7. invisible heat or light energy
  8. 8. a collection of billions of stars
  9. 10. a collection of gases, ice, and dust that orbits the sun
  10. 12. planets that are large and made mostly of gas
  11. 13. all of space and everything in it including the planets, stars and galaxies