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Warm Front Form when lighter, warmer air advances over heavier, colder air. A warm front is drawn on weather maps as a re line with red semicircles.

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Presentation on theme: "Warm Front Form when lighter, warmer air advances over heavier, colder air. A warm front is drawn on weather maps as a re line with red semicircles."— Presentation transcript:

1 Warm Front Form when lighter, warmer air advances over heavier, colder air. A warm front is drawn on weather maps as a re line with red semicircles.

2 Cold Front a blue line with triangles, occurs when colder air advances toward warm air and forces the warm air out of the area.

3 High Pressure Air is sinking More Dense No clouds As air falls it warms, preventing clouds from forming. Clear skies No precipitation

4 Low Pressure Air Rising Less Dense Forming clouds: As air rises it cools. As the air cools, the humidity in it begins to condense into tiny drops of water, Precipitation is present Associated with cold Fronts

5 Sea Breeze As the air over the land heats up the cold air over the water moves in under it.

6 Land Breeze The land cools off quicker than the water. As the air above the water moves up the air from the land moves under and over the water.

7 Air Masses Cool and damp, bringing cloudy weather. Continental Arctic : Very cold and dry. Continental polar: Cold and dry, forming further south than Arctic air masses. Continental tropical: Very hot and dry, forming over Mexico and the Southwest. Maritime tropical: Warm and very humid, forming over the Gulf of Mexico.

8 Global ocean conveyor belt The temperature and density of water also affects its movement. Cold water is denser than warm water. The dense water sinks, starting a deep current that moves water around the world. This is often called the global ocean conveyor belt. This helps to keep the earth’s temperatures constant.

9 Atmosphere The gases that surround the Earth. Divided into layers based on temperature change.

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