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Earth’s Resources

Earth’s Resources. Notes:. Resources Land Resources Air Resources Water Resources. Chap. 25. Quizzes:. Section Assessments Practice Test Questions. Resources. What is a natural resource?. Commodity that has value in its unmodified state. What is a natural resource?.

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Earth’s Resources

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  1. Earth’s Resources Notes: Resources Land Resources Air Resources Water Resources Chap. 25 Quizzes: Section Assessments Practice Test Questions

  2. Resources

  3. What is a natural resource? Commodity that has value in its unmodified state.

  4. What is a natural resource? • Renewable Resource

  5. What is a natural resource? • Renewable Resource Resource that is depleted more slowly than it is replenished.

  6. What is a natural resource? • Renewable Resource • Living things

  7. Living Renewable Resources Lumber/Paper Crops Fish Cattle/Sheep Chickens

  8. What is a natural resource? • Renewable Resource • Living things • Non-living things

  9. Non-living Renewable Resources Sunlight Fresh air Fresh water Soil

  10. What is a natural resource? • Renewable Resource • Nonrenewable Resource Resources that cannot be easily replaced

  11. Nonrenewable Resources Fossil fuels Precious stones Gold/Copper/Silver Uranium

  12. What is a natural resource? • Where are natural resources?

  13. The End

  14. Land Resources

  15. Protected land Yellowstone

  16. Protected land • About 42% of US is public land

  17. Protected land • About 42% of US is public land • National parks preserve land Sequoia Nat. Park

  18. Protected land • About 42% of US is public land • National parks preserve land • Wildlife refuges protect animals’ natural habitats

  19. Soil

  20. Soil • Soil takes 1000 years to form

  21. Soil • Soil takes 1000 years to form • Poor farming/overgrazing can lead to desertification

  22. Materials • Bedrock – limestone, granite, marble • Aggregates – mixtures of rocks/sand • Ores – material that is profitable to mine

  23. The End

  24. Air Resources

  25. Oxygen

  26. Oxygen • Makes up about 21% of air.

  27. Oxygen • Makes up about 21% of air. • Believed to be introduced to atmosphere about 4.5 bya.

  28. Oxygen • Makes up about 21% of air. • Believed to be introduced to atmosphere about 4.5 bya. • Recycled primarily by photosynthesis.

  29. Disruption of Earth’s Cycles

  30. Disruption of Earth’s Cycles • Carbon cycle

  31. Disruption of Earth’s Cycles • Carbon cycle • Increases Earth’s surface temp.

  32. Disruption of Earth’s Cycles • Carbon cycle • Increases Earth’s surface temp. • Changes rainfall patterns

  33. Disruption of Earth’s Cycles • Carbon cycle • Nitrogen cycle • Burning fossil fuels releases nitrogen compound into the atmosphere • These compounds may become acid rain.

  34. Air pollution Condition in which pollutants in the air become harmful to human health.

  35. Air pollution • Natural

  36. Air pollution • Natural

  37. Air pollution • Natural • Man-made (anthropogenic)

  38. Air pollution • Natural • Man-made (anthropogenic) • Indoor air pollution

  39. Indoor Air Pollution

  40. Air pollution • Natural • Man-made (anthropogenic) • Indoor air pollution • Radon gas

  41. Radon gas • Called radon-222

  42. Radon gas • Called radon-222 • Colorless, odorless, tasteless, natural

  43. Radon gas • Called radon-222 • Colorless, odorless, tasteless, natural • Forms when uranium-238 decays

  44. Radon gas • Called radon-222 • Colorless, odorless, tasteless, natural • Forms when uranium-238 decays • Seeps upward through cracks

  45. Radon gas • Called radon-222 • Colorless, odorless, tasteless, natural • Forms when uranium-238 decays • Seeps upward through cracks • Has cause about 13,000 lung cancer deaths

  46. The End

  47. Water Resources

  48. Water facts

  49. Water facts • It covers about 71% of Earth’s surface.

  50. Water facts • It covers about 71% of Earth’s surface. • The oceans contain 97% of Earth’s water.

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