| A | B |
|---|
| Energy that makes particles of matter move | thermal energy |
| Flow of thermal energy from one object to another | heat |
| Tool used to measure temperature | thermometer |
| Slows or stops flow of energy | insulator |
| Material that heat flows through easily | conductor |
| Transfer of energy through space | radiation |
| Transfer of heat when 2 objects touch | conduction |
| Transfer heat through liquids or gases | convection |
| Back and forth motion of sound | vibrations |
| Area of crowded particles followed by widely spaced particles | sound wave |
| Reflected sound | echo |
| Distance from the peak of one wave to the peak of another wave | wavelength |
| Number of vibrations a sound source makes in a given amount of time | frequency |
| Highness or lowness of sound | pitch |
| Amount of energy in a sound wave | amplitude |
| Loudness of sound | volume |
| Technology that uses sound waves to detect underwater objects | sonar |
| Object that separates white light into colored bands of light | prism |
| Range of waves that make up light | electromagnetic spectrum |
| Bending of light as it passes from one material to another | refraction |
| Tool used to reflect light | mirror |
| Thin clear tissue covering the eye | cornea |
| Opening in the eye | pupil |
| Colored part of the eye | iris |
| Lens thick on the edges | concave |
| Lens thick in the middle | convex |
| Tissue covering the back of the eye | retina |
| Waves hitting a surface and bouncing off them | reflection |
| Incoming angle is equal to outgoing angle | law of reflection |
| Clearly see through objects | transparent |
| Kind of see through objects | translucent |
| Can't see through objects at all | opaque |
