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End Show Slide 1 of 26 Copyright Pearson Prentice Hall biology

End Show Slide 2 of 26 Do Now 1/22/13 1.Define Trophic Level 2.What are decomposers? 3.What are detritivores? Copyright Pearson Prentice Hall

End Show Slide 3 of 26 Copyright Pearson Prentice Hall 4-1 The Role of Climate

End Show 4-1 The Role of Climate Slide 4 of 26 Copyright Pearson Prentice Hall What Is Climate? Weather is the day-to-day condition of Earth's atmosphere at a particular time and place. Climate refers to the average year-after-year conditions of temperature and precipitation in a particular region.

End Show 4-1 The Role of Climate Slide 5 of 26 Copyright Pearson Prentice Hall What Is Climate? Climate is caused by: trapping of heat by the atmosphere latitude transport of heat by winds and ocean currents amount of precipitation shape and elevation of landmasses

End Show 4-1 The Role of Climate Slide 6 of 26 Copyright Pearson Prentice Hall The Greenhouse Effect How does the greenhouse effect maintain the biosphere's temperature range?

End Show 4-1 The Role of Climate Slide 7 of 26 Copyright Pearson Prentice Hall The Greenhouse Effect Atmospheric gases that trap the heat energy of sunlight and maintain Earth's temperature range include: carbon dioxide methane water vapor

End Show 4-1 The Role of Climate Slide 8 of 26 Copyright Pearson Prentice Hall The Greenhouse Effect The natural situation in which heat is retained in Earth’s atmosphere by this layer of gases is called the greenhouse effect. Sunlight Earth’s Surface Atmosphere Some heat escapes into space Greenhouse gases trap some heat

End Show 4-1 The Role of Climate Slide 9 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate Solar radiation strikes different parts of Earth’s surface at an angle that varies throughout the year. At the equator, energy from the sun strikes Earth almost directly. At the North and South Poles, the sun’s rays strike Earth’s surface at a lower angle.

End Show 4-1 The Role of Climate Slide 10 of 26 Do Now 1/23/13 1.What is the difference between climate and weather? 2.What are the gases that contribute to the greenhouse effect? 3.What are the 3 main climate zones? Which zone do we live in? Copyright Pearson Prentice Hall

End Show 4-1 The Role of Climate Slide 11 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate What are Earth's three main climate zones?

End Show 4-1 The Role of Climate Slide 12 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate As a result of differences in latitude and thus the angle of heating, Earth has three main climate zones: polar, temperate, and tropical

End Show 4-1 The Role of Climate Slide 13 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate Earth’s Main Climate Zones Sunlight Most direct sunlight 90°N North Pole Temperate Tropical Temperate Polar Arctic Circle Tropic of Cancer Equator Tropic of Capricorn Antarctic Circle 90°S South Pole 66.5°S 23.5°S 23.5°N 66.5°N Polar Sunlight 0°

End Show 4-1 The Role of Climate Slide 14 of 26 Do Now 1/29/13 1.According to the article, “Hotter than Ever,” what is the significance of a one degree change in the average temperature? 2.What severe weather events occurred in 2012? 3.What was the average temperature in 2011? Copyright Pearson Prentice Hall

End Show 4-1 The Role of Climate Slide 15 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate The polar zones are cold areas where the sun's rays strike Earth at a very low angle. Polar zones are located in the areas around the North and South poles, between 66.5° and 90° North and South latitudes.

End Show 4-1 The Role of Climate Slide 16 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate The temperate zones sit between the polar zones and the tropics. Temperate zones are more affected by the changing angle of the sun over the course of a year. As a result, the climate in these zones ranges from hot to cold, depending on the season.

End Show 4-1 The Role of Climate Slide 17 of 26 Copyright Pearson Prentice Hall The Effect of Latitude on Climate The tropical zone, or tropics, is near the equator, between 23.5° North and 23.5° South latitudes. The tropics receive direct or nearly direct sunlight year-round, making the climate almost always warm.

End Show 4-1 The Role of Climate Slide 18 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere Unequal heating of Earth’s surface drives winds and ocean currents, which transport heat throughout the biosphere.

End Show 4-1 The Role of Climate Slide 19 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere Warm air over the equator rises, while cooler air over the poles sinks toward the ground. The upward and downward movement of air creates air currents, or winds, that move heat throughout the atmosphere.

End Show 4-1 The Role of Climate Slide 20 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere Earth’s Winds WINDS 66.5°N N 23.5°N 0° 23.5°S 66.5°S Prevailing winds Southeast Trade Winds Westerlies Polar Easterlies Equator Northeast Trade Winds Westerlies Polar Easterlies

End Show 4-1 The Role of Climate Slide 21 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere Similar patterns of heating and cooling occur in Earth’s oceans. Cold water near the poles sinks, then flows parallel to the ocean bottom, and rises in warmer regions. Water is also moved at the surface by winds.

End Show 4-1 The Role of Climate Slide 22 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere The movement of the water creates ocean currents, which transport heat energy throughout the biosphere. Surface ocean currents warm or cool the air above them, affecting the weather and climate of nearby landmasses.

End Show 4-1 The Role of Climate Slide 23 of 26 Copyright Pearson Prentice Hall Heat Transport in the Biosphere Ocean Currents OCEAN CURRENTS 66.5°N N 23.5°N 00°00° °S 66.5°S Equator Warm currents Cold currents

End Show - or - Continue to: Click to Launch: Slide 24 of 26 Copyright Pearson Prentice Hall 4-1

End Show Slide 25 of 26 Copyright Pearson Prentice Hall 4-1 The Earth’s polar zones are cold because a.they are never heated by the sun. b.at the poles, the sun's rays are at a very low angle. c.the greenhouse effect does not occur at the poles. d.heat is transported from the poles to the equator.

End Show Slide 26 of 26 Copyright Pearson Prentice Hall 4-1 The upward movement of warm air and the downward movement of cool air creates a.upwellings. b.air currents. c.ocean currents. d.the greenhouse effect.

End Show Slide 27 of 26 Copyright Pearson Prentice Hall 4-1 Earth's temperature range is maintained by a.the greenhouse effect. b.climate zones. c.ocean currents and winds. d.latitude differences.

End Show Slide 28 of 26 Copyright Pearson Prentice Hall 4-1 Variation of temperature in the temperate zone is due primarily to a.air and ocean currents. b.the greenhouse effect. c.variation in the sun’s energy production. d.latitude and season.

End Show Slide 29 of 26 Copyright Pearson Prentice Hall 4-1 The tropical zone is warm all year long because a.the sun’s angle changes the most in that part of Earth. b.ocean water is warmest near the equator. c.it receives direct or nearly direct sunlight year-round. d.landmasses in the tropic latitudes hold on to heat.

END OF SECTION