1. heat the flow of energy from a warmer object to a cooler object.

2. thermal energy the energy of moving particles of matter.

3. vibrate to move back and forth quickly.

4. sound a form of energy that comes from objects that vibrate.

5. light a form of energy that allows you to see objects in the dark.

6. electric current a flow of charged particles.

7. energy he ability to do work.

8. conductor a material that heat moves through easily.

9. insulator a material that heat does not move through easily.

10. volume describes how loud or soft a sound is.

11. pitch how high or low tone is.