| A | B |
|---|
| Amplitude | the height of a wave (the more amplitude |
| energy | the capacity for doing work |
| epicenter | the part of the Earth's surface directly above the focus of an earthquake |
| focus | the place of origin of an earthquake or moonquake |
| light waves | a pulsation in space that transfers light energy |
| pitch | the property of sound that is determined by the frequency of the waves producing it (the highness or lowness of a sound) |
| reflection | the throwing back by a body or surface of light/heat/sound without absoribing it (bouncing waves) |
| refraction | deflection from a straight path undergone by a light ray or energy wave in passing from one medium to another (bending waves) |
| sound waves | mechanical radiant energy that is transmitted by longitudinal pressure wave in a material medium (such as air) and is the objective cause of hearing |
| waves | a vibration in matter, a disturbance/variation that transfers energy progressively from one point to another |
| wavelength | the distance between successive crests of a wave |
