Heat from the sun makes the water in the ocean evaporate but the salt stays in the ocean.
5.
A current is a river of water flowing through water.
9.
Heat from the sun causes ocean currents because the sun is providing its heat mostly to the equator and the colder water is pushing towards the warmer water causing ocean currents.
2.
Rain water is not salty because it is evaporated water.
6.
Thermohaline currents are currents that are caused by th sun's heat waves.
10.
The Atlantic Ocean has the most powerful current.
3.
Salt water is heavier because it is much denser and contains more minerals.
7.
Data bouys are used to see where the ocean current is flowing.
11.
Mars cannot have oceans because the planet is too cold to the point where the water freezes.
4.
Water helps keep England warmer.
8.
Fishes in the aquarium need currents for food and oxygen.
12.
Many things depend on currents for food, transportation, and suitable climates.