| A | B |
|---|
| deep ocean currents | movement of water caused by temperature differences |
| gravity | pulling force between two objects |
| surface currents | strong flow of water caused by wind |
| tides | rising and falling of ocean water levels |
| water cycle | movement of water between ocean and air |
| waves | up and down movement of ocean water |
| different in different places | The temperature of the ocean water is______________. |
| cold water in the ocean sinks | Deep ocean currents occur when__________________. |
| weather on the land | Temperature of water on the ocean's surface affects_____________. |
| water in a wave moves up and down | Waves on a rope are like water waves because________________. |
| salt | When ocean water evaporates, the ___is left behnd. |
