Energy puzzle

2. mass of a unit volume of a material substance
6. Energy of motion
9. state of matter that has no fixed shape
11. stored energy
14. The conversion of one form of energy into another
15. Energy contained within a system responsible for its own temperature
16. the ability to do work
17. A material or converting that electricity, heat, or, sound cannot go through
18. A collection of elements or components that are organized for a common purpose.
20. force applied over distance

1. when heat moves from one object to another through direct touch
3. Motion in a gas or liquid in which the warmer rise and the colder portions sink
4. takes the shape of their container
5. The transfer of kinetic energy from one object to another
7. Energy that moves one place to another
8. anything that takes up space and can be weighed
10. A push or a pull
12. A small localized object
13. the measure of hotness or coldness expressed in terms of any of several scales
19. A state of matter that retains its shape and density when not confined