Across
- 2. force that produces heat when surfaces rub together
- 8. decrease in size when temperature decreases
- 9. the transfer of thermal energy from a warmer object to a cooler object
- 10. matter with particles that slide past each other
- 13. equilibrium when objects reach the same temperature
- 15. increase in size when temperature increases
- 16. heat transfer by the movement of fluids like liquids or gases
- 18. transfer movement of energy from one place or object to another
- 19. energy the total energy of moving particles in a substance
- 20. a material that allows heat to move easily
Down
- 1. heat transfer by direct contact between particles
- 3. matter with tightly packed particles that vibrate in place
- 4. energy energy of motion of particles
- 5. model a way to explain matter based on particle motion
- 6. heat transfer through waves without needing matter
- 7. a material that slows the transfer of heat
- 11. of matter the physical form of matter such as solid liquid or gas
- 12. matter with particles that move freely and spread out
- 14. the amount of mass in a given volume
- 17. a measure of the average kinetic energy of particles