| A | B |
|---|
| wave | rythmic movement carrying energy through the water |
| crest | top of the wave |
| trough | bottom between two crests |
| breaker | collapsing wave as it hits the beach |
| tidal range | the distance between tides water levels |
| wave height | vertical distance between crest and trough |
| wave length | horizontal distance between crests |
| what makes waves? | wind, earthquakes, etc. |
| tide | rise and fall of ocean water |
| gravity | a force that pulls the sun, moon and Earth to make tides |
| Moon | controls most of the ocean tides |
| 2 of each occur each day | high and low tide |
| high tide to another high tide | 12.5 hours |
| high tide to low tide | approx. 6 hours |
| spring tide | when it's the greatest difference between high tide and low tide |
| neap tide | when it's the least difference between high tide and low tide |
| Sun, Earth & moon in a line cause a _______________ tide | spring |
| Sun and moon are at right angle to Earth during a _____________________tide | neap |
| surface current | moves water horizontally |
| upwelling | water rises from the deep |
| density current | more dense seawater sinking under less dense |
| Coriolis effect | effects surface current-caused by earth's rotation |
| Gulf Stream | current going along eastern seaboard |
