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World Climate Patterns

World Climate Patterns . Chapter 3 Section 3. Tropical, dry, midlatitudes , high latitudes, highland Natural vegetation – original plant life growing in an area. Climate Regions. Tropics – climates found in or near the low latitudes Tropical wet and tropical dry Wet – average temp of 80

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World Climate Patterns

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  1. World Climate Patterns Chapter 3 Section 3

  2. Tropical, dry, midlatitudes, high latitudes, highland • Natural vegetation – original plant life growing in an area Climate Regions

  3. Tropics – climates found in or near the low latitudes • Tropical wet and tropical dry • Wet – average temp of 80 • Warm, humid • 80 in of rain/yr • Dry – dry winters, wet summers • Coarse grass • Few trees in Savannas • Veg – thick, canopy • Largest is Amazon River basin Tropical Climates

  4. Deserts and steppes • Low latitudes and midlatitudes • Deserts • Dry • Sparse plant life • Rarely more than 10 in/yr • Only 1/3 of Earth’s land area • Veg – scrub, cactus, low humidity • Oasis – lush areas created by underground springs • Steppes • Treeless grasslands around deserts Dry Climates

  5. 4 temperate climate regions • Marine west coast • Between latitudes 30 S and 60 S • Ocean winds • Cool summer and cool, damp winters • Coniferous trees – evergreens, cones • Deciduous – broad leaves, change colors • Mediterranean • Lands around Mediterranean Sea • Woody bushes and short trees • Coastal midlands • Humid subtropical • Short, mild winters • Nearly year round rain • Prairies – inland grasslands • Humid continental • Northern, inland • Longer,more severe winters • Evergreens Midlatitude Climates

  6. Freezing temps throughout year • Lack of direct sunlight • Limited variety and amount of vegetation • Subarctic • Bitter winters • Summers are short and cool • Permanently frozen subsoil - permafrost • Tundra • Closer to Poles • Winter darkness • Indirect sun even in summer • Limited veg. High-Latitude Climates

  7. Higher elevation = cooler temp • Veg varies with elevation Highland Climates

  8. Climates change gradually over time • Last 1-2 million years Earth went through 4 ice ages – when glaciers cover large areas of surface • Human interaction affects changes • Fossil fuels, acid rain • Smog – visible chemical haze Climate Changes

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