Across
- 2. a group of planets that are large and made of gas
- 4. a force that slows down motion
- 6. organisms that break down dead organisms
- 8. when light bounces off an object
- 10. when earth makes one trip around the Sun
- 12. the imaginary line that Earth spins on
- 14. how low or how high a sound is
- 15. a group a planets that are smaller and mainly solid
- 17. organisms that get food directly from sunlight
- 19. an object that revolves around planet
- 20. a relationship in which both organisms are helped
Down
- 1. ____ would be an example of a decomposer
- 3. every sound is made by this
- 5. a____ is needed to make an object move or stop
- 7. when light bends
- 8. when earth spins once on its axis
- 9. animals that eat both meat and plants
- 11. a place where there is no air or any matter
- 13. the Sun is a ____
- 16. an object in space made of ice, dust and orbits the Sun
- 18. the center of our solar system