| A | B |
|---|
| mechanical waves | require a medium |
| medium | materials that can carry waves |
| energy | what is transferred by waves |
| transverse wave | particles of the medium move up and down |
| longitudinal wave | particles of the medium move back and forth |
| surface wave | particles of the medium move in a circle |
| more energy in a wave creates | more amplitude |
| crest | high point of transverse wave |
| trough | low point of transverse wave |
| compression | dense (squished together) part of longitudinal wave |
| rarefaction | spread out part of longitudinal wave |
| frequency | number of waves that pass a fixed point in given time |
| wavelength | distance between matching points |
| short | high frequency = ___ wavelength |
| more | high frequency = ____energy |
| reflection | waves bounce back |
| refraction | waves bend when enter new medium at an angle |
| diffraction | bending around a corner or go thru small opening |
| constructive interference | 2 waves combine to create 1 wave with higher amplitude |
| destructive interference | 2 waves combine to create 1 wave with zero amplitude |
