| A | B |
| 70% | Percentage of the earth covered by water |
| 97% | percentage of earth's water that is in the ocean |
| Water cycle | Evaporation, Condensation, Precipitation, Run-off |
| Tides | Gravitation pull of the moon and sun on the earth's oceans |
| Currents | Convection streams in the earth's oceans |
| Gulf Stream | Carries warm water from the Gulf of Mexico to Britain |
| Condensation | water vapor becomes clouds |
| Evaporation | water becomes a gaseous |
| Precipitation | condensed water becomes rain, sleet, hail, or snow |
| Vertical climates | average weather in different elevations |
| Tropical hurricanes | Huge cyclonic storms caused by the rapid evaporation of ocean water |