Across
- 3. connecting lines in a temperature map
- 5. light energy travels in_____
- 7. has a negative charge
- 8. can radiate through empty space
- 10. movement of air from area of high temperature and low temperature
- 13. outer layer of the earth
- 15. a push or pull
- 17. two or more atoms that are bonded
- 19. has a positive charge
- 20. temperature decreases, breaks bonds
- 21. collection of space debris, result of a star's death
- 22. visualizes forces acting on an object
- 24. mechanical waves need this to move
Down
- 1. measurement from one crest to another
- 2. particles travel in direction of wave velocity
- 4. any area affected by force
- 6. charge is measured in________
- 9. 7th element of the periodic table
- 10. clouds dont stop collecting___________
- 11. generally called kinetic energy
- 12. an echo is a _________ sound wave
- 14. has neutral charge
- 15. when warm/cold air moves to an area of different temperature
- 16. circuit
- 18. temprature increases, makes bonds
- 23. 10th element of the periodic table