vocab 4 and 5

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Across
  1. 4. a battery
  2. 6. a bird
  3. 10. energy that comes from the movement of atoms and molecules in a substance
  4. 11. a group of the same species living in an area
  5. 12. breaks down bacteria
  6. 14. a roller coaster
  7. 16. eats other animals for energy
  8. 17. delivered by tiny charged particles called electrons
  9. 18. radiant energy that travels in waves at the speed of light
  10. 20. any living thing
  11. 21. a sitting ball
Down
  1. 1. the sun
  2. 2. the home of an organism
  3. 3. energy stored in objects by tension
  4. 5. energy stored in the nucleus of an atom
  5. 7. energy stored in an object's height
  6. 8. energy stored in the movement of objects
  7. 9. electromagnetic energy that travels in transverse waves
  8. 13. makes its own food
  9. 15. the role an organism plays
  10. 19. all of the different populations of living things that interact with one another in an area.