EPOM Density Creates Currents Daily Grade

Density moves matter in a process called ___________.

Cold air near the heater will warm up because

Convection currents happen in the atmosphere.

Air in atmosphere is ________ near the equator and __________ at the poles.

Wind is very complex, but all wind is created by changes in _______ brought about by temperature differences.

Convection does not work in liquids or gases.

Ocean currents have several different causes, many of which are due to changes in _________.

Ice formation near the poles _________ the salt content of the surface water.

The ______ salt in the water, the more dense it becomes.

The colder, denser, more saline water is the more it _______.