Presentation on theme: "18-2 Climate Regions Scientists classify climates according to 2 major factors: *temperature *precipitation There are 5 major climate regions: tropical."— Presentation transcript:
1 18-2 Climate RegionsScientists classify climates according to 2 major factors:*temperature*precipitationThere are 5 major climate regions: tropical rainy, dry, temperate marine, temperate continental, and polarExample of a Climate Regions Mapimages.encarta.msn.com/.../maps/map/T373599A.gif
2 18-2 Climate Regions: Tropical Rainy Climates *Tropical Wet*Tropical Wet-and-DryTropical wet climate has many rainy days with year-round heat and heavy rainfall. Found in equatorial lowlands*Rain forests often grow in this climate. Rain forests are forests in which plenty of rain falls year-round* Windward side of Hawaiian island Kauai is only area in United StatesBackground:
3 18-2 Climate Regions: Tropical Rainy Climates Tropical Wet-and-Dry climates get less rain than tropical wet climates and have distinct dry and rainy seasons* Has savannas which are tropical grasslands*Southern tip of Florida is exampleBackground photo from:
4 18-2 Climate Regions: Dry Climates DRY CLIMATES exist where the amount of precipitation is less than the amount of water that could evaporate*Arid*SemiaridArid regions, or deserts, get less than 25 centimeters of rain each year* only specialized plants like cactus can survive* Parts of Southern California and southwestern United States have arid climates
5 18-2 Climate Regions: Dry Climates Semiarid areas are usually located on the edges of deserts and often get enough rainfall for short grasses and low bushes to grow* A steppe is a prairie or grassland found in the semiarid climate region* The Great Plains of the United States are a semiarid region.
6 18-2 Climate Regions: Temperate Marine Climates TEMPERATE MARINE CLIMATES are humid and have mild winters and are located on the coasts of continents in the temperate zones*Marine West Coast*Mediterranean*Humid SubtropicalMarine West Coast is the coolest temperate marine climate* found on west coasts north of 40° North and south of 40° South*Humid ocean air brings cool, rainy summers and mild, rainy winters. Thick forests of tall trees are here.* Northwestern U.S. such as Washington state, Oregon, and northern California
7 18-2 Climate Regions: Temperate Marine Climates Mediterranean is a coastal climate that is drier and warmer than west coast marine.*Climate is mild with “two seasons”winter has cool, rainy weather, summer is warmer with little rain.*Grasses and dense shrubs and small trees*Southern coast of CaliforniaBackground from-
8 18-2 Climate Regions: Temperate Marine Climates Humid Subtropical has the warmest temperate marine climate, it is wet and warm but not constantly hot like tropics* Summers are hot with more rain than in winter*Winters are cool to mild, with more rain than snow*Southeastern U.S.
10 18-2 Climate Regions: Temperate Continental Climates TEMPERATE CONTINENTAL CLIMATES are found in Northern Hemisphere are not influenced much by oceans, they tend to have extremes of temperature*Humid Continental*Subarctic
11 18-2 Climate Regions: Temperate Continental Climates Humid Continental climates have constantly changing weather due to shifting tropical and polar air masses*moderate amounts of rain in summer with smaller amounts of rain or snow in winter*Northeastern and Midwest U.S. from New York to Kansas and states to the northSubarctic climates lie north of humid continental* Short, cool summers and long, bitterly cold winters* Climates of Russia, Canada, and Alaska
12 18-2 Climate Regions: Polar Climates POLAR CLIMATE is the coldest climate region, only in far north and south, near North and South poles*Ice Cap*TundraIce Cap climates have average temperatures always below freezing*covered in ice and snow*Greenland and AntarcticaBackground from-
13 18-2 Climate Regions: Polar Climates 18-2 Climate Regions: Polar ClimatesTundra climates have short, cool summers with bitterly cold winters*Permafrost is permanently frozen soil, doesn’t allow water to drain well so it is wet and boggy in the summer*Northern Alaska, Canada, and RussiaHIGHLANDS CLIMATE REGION are high areas that are colder than the areas that surround them*temperature falls as altitude increases, climbing 1,000 meters up is like traveling 1,200 kilometers north