3. Ocean Currents - a river of water that flows in a definite path in the ocean. The surface temp of water affects the temp of the air.
Warm water currents travel away from equator. Cold water currents travel toward the equator. Land near currents is affected by the temp of the ocean currents.
4. Distances From Water Oceans greatly moderate the temps of nearby land. Water heats/cools slower than land.
FACTORS THAT AFFECT PRECIPITATION 1.Prevailing Winds - Carries different amounts of moisture which affects precipitation.
Winds that blow from sea to land carry more moisture. Places in the center of a land mass have dry climates.
Region that receives less than 25cm of precipitation in one year.
2. MOUNTAIN RANGES Act as barriers to winds Mountains cause air to rise 2 parts of a mountain: windward side & leeward side
A) Windward side- receives a lot of precipitation. Faces the wind. B) Leeward side- drier air. Faces away from wind.
How Mtns. Affect Precip. Air is forced up. As it rises, it starts to cool. Cold air cant hold as much moisture so precipitation occurs on the windward side. Air that comes over the Mtn. (leeward side) is drier.
3. SEASONAL WINDS Monsoon- a major landbreeze or seabreeze that changes direction with the seasons.
THE SEASONS Most places outside the tropics have 4 seasons: summer, fall, winter, & spring.
Causes of Seasons Tilted Axis- the tilt of the earths axis as the earth travels around the sun. Tilted on an angle of 23.5
The north end of the axis is pointed away from the sun for part of the year (Winter)& toward the sun for another part of the year (Summer).