The boundary of a large mass of cold air that usually starts in the North and moves South

The boundary of a large mass of warm air that usually starts in the south and moves north

Cold air and warm air meet, but both are weak so they stop moving

A violent storm that forms in tropical areas along the Equator because the air is coll and the water is warm

Less air molecules in a space

Lots of air molecules in a space

How tightly packed matter is

Hot rises and cold sinks

What are 3 things on Earth that convection creates

What area of Earth is the temperatures warm all year around

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