Unit 15b Biosphere climate and biomes

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Unit 15b Biosphere climate and biomes

  1. 1. KEY CONCEPT The biosphere is one of Earth’s four interconnected systems. <br />
  2. 2. The biosphere is the portion of Earth that is inhabited by life. What kinds of things would it include?<br />The biosphere includes all ecosystems.<br />one of Earth’s systems<br /><ul><li>includes the biota, all the living things in the biosphere</li></li></ul><li>There are three other Earth systems.<br /><ul><li>Hydrosphere—water, ice, and water vapor (Oceans, Rivers, Lakes, and groundwater)
  3. 3. Atmosphere—air blanketing Earth’s solid and liquid surface
  4. 4. Geosphere—geologic features above and below Earth’s surface
  5. 5. Life has been found in all of these systems and virtually everywhere we have looked</li></li></ul><li>KEY CONCEPT Climate is a key abiotic factor that affects the biosphere. How? <br />
  6. 6. Climate is the prevailing weather of a region.<br />Climate is the long-term pattern of weather conditions. What conditions would be included?<br />average temperature<br />precipitation<br />relative humidity<br />Key factors shape an area’s climate.<br />temperature<br />sunlight<br />water<br />wind<br />
  7. 7. A microclimate is the climate of a small specific place within a larger area.<br />
  8. 8. Earth has three main climate zones. <br />The three main zones are the polar, tropical, and temperate climates. Which do we live in?<br />polar climate: the far northernand southern regions ofEarth<br />tropical zone: surrounds the equator<br />temperate zone: the wide area in betweenthe polar and tropical zones<br />
  9. 9. 90 N<br />polar<br />temperate<br />tropical<br />temperate<br />polar<br />The angle of the Sun’s rays determine an area’s climate.<br />
  10. 10. Earth’s tilt on its axis results in seasonal change.<br /><ul><li>Solar heating causes movements in both water and air. Why?
  11. 11. wind
  12. 12. ocean currents
  13. 13. Earth’s rotation also has effects on the winds and currents. How?
  14. 14. The uneven heating of the Earth is the ultimate cause of all weather. Why?</li></li></ul><li>western slope<br />eastern slope<br />Mountains have an effect on climate. How?<br /><ul><li>Precipitation occurs on the side of the mountain facing the wind. Why?
  15. 15. On the downwind side, drier and cooler air produce a rain shadow. Why?</li></li></ul><li>KEY CONCEPT Biomes are land-based, global communities of organisms. <br />
  16. 16. Earth has six major biomes.<br /><ul><li>A biome is a major community of organisms.</li></li></ul><li>Source: World Meteorological Organization<br />Tropical rain forest biomes produce lush forests. Why?<br /><ul><li>warm temperature
  17. 17. abundant precipitation all year</li></li></ul><li>Rapid City, South Dakota<br />Source: National Oceanic Atmospheric Administration<br />Grassland biomes are where the primary plant life is grass.<br />
  18. 18. <ul><li>Grassland biomes are where the primary plant life is grass.</li></ul>Temperate grasslands are dry and warm during the summer; cold in winter with most precipitation falls as snow.<br /><ul><li>Tropical grasslands are warm throughout the year, with definite dry and rainy seasons.</li></li></ul><li>Tucson, Arizona<br />Source: National Oceanic Atmospheric Administration<br />Desert biomes are characterized by a very arid climate. Why?<br /><ul><li>very low amount of precipitation
  19. 19. four types: hot, semi-arid, coastal, and cold</li></li></ul><li>Burlington, Vermont<br />Source: National Oceanic Atmospheric Administration<br />Temperate forest biomes include deciduous forests and rain forests.<br /><ul><li>Temperate deciduous forests have hot summers and cold winters.
  20. 20. Deciduous trees are the dominant plant species.</li></li></ul><li><ul><li>Temperate forest biomes include deciduous forests and rain forests.
  21. 21. Temperate deciduous forests have hot summers and cold winters.</li></ul>Deciduous trees are the dominant plant species.<br />The temperate rain forests have a long wet season and relatively dry summer. <br /><ul><li>Ferns and moss cover the forest floor. </li></li></ul><li>Banff, Canada<br />Source: Environment Canada<br />The taiga biome is located in cooler northern climates.<br /><ul><li>boreal forest
  22. 22. long winters and short summers
  23. 23. small amount of precipitation</li></li></ul><li>Barrow, Alaska<br />Source: National Oceanic Atmospheric Administration<br />The tundra biome is found in the far northern latitudes with long winters.<br /><ul><li>winter lasts 10 months
  24. 24. limited precipitation
  25. 25. permafrost</li></li></ul><li>Minor biomes, such as chaparral, occur globally on a smaller scale.<br />
  26. 26. Polar ice caps and mountains are not considered biomes.<br />Polar ice caps have no soil, therefore no plant community. <br />The climate and organisms found on mountains change as the elevation changes.<br />
  27. 27. 1. Which type of growth occurs when a population has unlimited resources and no predators? <br />A. logistic growth <br />B. exponential growth <br />C. S-shaped growth <br />D. population crash<br />
  28. 28. Which type of growth occurs when a population has unlimited resources and no predators? <br />A. logistic growth <br />B. exponential growth <br />C. S-shaped growth <br />D. population crash<br />Correct Answer = B<br />Which of the following can cause a population crash? <br />A. a rise in the carrying capacity for a population <br />B. a rise in the emigration rate <br />C. a drop in the immigration rate <br />D. a drop in the carrying capacity for a population<br />
  29. 29. Which type of growth occurs when a population has unlimited resources and no predators? <br />A. logistic growth <br />B. exponential growth <br />C. S-shaped growth <br />D. population crash<br />Correct Answer = B<br />Which of the following can cause a population crash? <br />A. a rise in the carrying capacity for a population <br />B. a rise in the emigration rate <br />C. a drop in the immigration rate <br />D. a drop in the carrying capacity for a population<br />Correct Answer = D<br />
  30. 30. Review<br />The biosphere is the part of Earth that contains all living things and includes all the ecosystems.<br />Climate is the prevailing weather over an area<br />The uneven heating of the Earth due to its shape, tilt and rotation determines weather.<br />The Earth has six major biomes:<br />Tropical Rainforest<br />Grasslands<br />Desert<br />Temperate forest<br />Taiga<br />Tundra<br />

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