greenhouse effect is more significant near the Equator

increased beam spreading at higher latitudes due to Earth being spherical

there are more volcanoes near the Equator which release heat

A

B

C

D

0 and 30

30 and 60

0 and 60

30 and 90

from the east to the west

from the west to the east

low pressure to low pressure areas

low pressure to high pressure areas

high pressure to low pressure areas

high pressure to high pressure areas

A

B

C

Molecules which have a higher temperature move faster and so occupy more space. Warmer air or water is therefore less dense and will rise.

Molecules which have a higher temperature move slower and so occupy less space. Warmer air or water is therefore less dense and will sink.

Molecules which have a higher temperature move faster and so occupy more space. Warmer air or water is therefore more dense and will sink.

thermocline

halocline

pycnocline

Because there is no density difference between the surface and deep ocean.

Because the surface water is much less dense than the deeper water and will not sink.

Because the surface water is much more dense than deeper water and will not sink.

For reverse osmosis to occur we have to apply pressure to the seawater so requires a lot of energy.

After reverse osmosis we will end up with greater amount of freshwater on one side of the membrane and a smaller quantity of much saltier water on the other side.

Reverse osmosis is where water molecules move from less salty water to more salty water through a membrane.