Across
- 1. a substance that flows freely
- 5. the degree of compactness of a substance
- 7. heat and energy is through direct contact
- 8. the measure of hotness or coldness
- 9. activity involving mental or physical effort
- 12. travels through space at the speed of light
- 13. that heat is transferred by movement of a heated liquid
- 16. the energy contained within a system.
- 19. a speed of something in a given direction
- 20. firm and stable in shape
Down
- 2. a substance of which does not allow the passage of heat or sound
- 3. stored energy
- 4. physical substance in general
- 6. energy that is transferred from one thing to another
- 10. energy of motion
- 11. a set of things that work together
- 14. a minute portion of matter
- 15. move from one place to another
- 17. the strength required for sustained for physical or mental activity
- 18. a substance of matter that will expand