| A | B |
|---|
| crest | top of wave |
| density | mass of substance per unit volume |
| upwelling | wind pushes surface water aside, denser, more nutrient rich water rises to surface |
| tide | giant wave formed by gravitational pull towards moon |
| wave | disturbance in a medium that transmits energy from one place to another |
| surface currents | formed by wind |
| deep water currents | caused by changes in temperature and density |
| trough | the lowest point in a wave |
| frequency | the speed of a wave |
| amplitude | the height of a wave |
| tsunami | a giant wave caused by an earthquake |
| coastal erosion | erosion caused by the oceans weather patterns |
