Across
- 5. Air and gases
- 10. 'n Example of insulating material
- 11. A microorganism in the air
- 12. Soil and rocks
- 15. Other word for heat or temperature
- 16. Heat travels with electromagnetic waves
- 17. An example of convection
- 20. This type of material does not conduct heat
Down
- 1. Pick up changes in the body and environment
- 2. Space where there is no matter
- 3. Microorganism in soil that breaks down dead organic matter
- 4. Hot particles rise and colder particles sink
- 6. 'n Example of radiation
- 7. Objects must touch directly to each other for heat transfer
- 8. The water on earth
- 9. Animals that can control their own body temperature
- 13. When particles are heated they get ___
- 14. a microorganism in the water
- 18. Get rid of wastes in the body
- 19. Nitrogen fixing bacterium makes the soil __