| A | B |
| vibrates | moves back and forth |
| high-pitch sound | a small object produces a HIGH sound |
| low-pitch sound | a large object produces a LOW sound |
| volume | how LOUD or SOFT a sound seems |
| temperature | a measure of how hot or cold something is |
| thermometer | tool used to measure temperature |
| conductor | any material that allows heat to move easily through it |
| heat | flow of thermal energy from warmer to cooler objects |
| insulators | materials through which heat DOES NOT pass quickly |
| transparent | see-through like glass |
| translucent | like waxed paper; you can PARTiALly see the object thru it |
| opaque | a solid object through which you can not see |