| A | B |
| Resonance | vibrations traveling through object match object's natural frequency |
| longitudinal wave | waves that move teh particles of medium parallel to the direction the waves are traveling |
| wavelength | distance between same part on a wave and the same part of the next wave |
| wave | disturbance that transfers energy from place to place |
| interference | interaction between two waves that meet |
| diffraction | bending of waves around the edge of a barrier |
| crest | highest point of transverse wave |
| hertz | measurement of frequency |
| refraction | bending of waves due to change in speed |
| amplitude | maxium distance particles move from the rest position |
| mechanical waves | classified by how they move |
| antinodes | highest adn lowest points on a standing wave |
| constructive interference | waves combine to make a bigger amplitude |
| destructive interference | waves combine to make smaller amplitudes |
| frequency | how often a wave occurs; speed divided by wavelength |
| standing wave | when an incoming wave combines with a reflected wave and the wave seems to be standing still |