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JSS3: BASIC SCIENCE - 1ST TERM

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  1. Family Traits | Week 1
    7 Topics
    |
    1 Quiz
  2. Environmental Hazards I - Soil Erosion | Week 2
    3 Topics
  3. Environmental Hazards I - Flooding | Week 3
    5 Topics
    |
    1 Quiz
  4. Environmental Hazards II - Bush Burning | Week 4
    4 Topics
  5. Environmental Hazards II - Deforestation | Week 5
    4 Topics
    |
    1 Quiz
  6. Environmental Hazards III - Desertification | Week 6
    4 Topics
    |
    1 Quiz
  7. Environmental Hazards III - Description of the Ozone Layer and its Location in the Atmosphere | Week 7
    4 Topics
    |
    1 Quiz
  8. Drug and Substance Abuse | Week 8
    4 Topics
    |
    1 Quiz
  9. Resources from Living Things | Week 9
    4 Topics
  10. Resources from Non-Living Things | Week 10
    2 Topics
    |
    1 Quiz



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Topic Content:

  • Ozone Layer
  • Natural Production of Ozone
  • Importance of Ozone layer
atmosphere

The atmosphere is comprised of layers based on temperature. These layers include the

  • troposphere
  • stratosphere
  • mesosphere
  • thermosphere
  • exosphere

Exosphere is the outermost layer (very edge) of the atmosphere. It extends from about 440 miles (700 km) to 6,200 miles (10,000 km ) above the earth. In this layer, atoms and molecules escape into space and satellites orbit the earth.

layers of the atmosphere

The ozone layer, 15 to 30 km above the earth’s surface, is located in the lower stratosphere, which is the second layer of the earth’s atmosphere. The stratosphere starts just above the troposphere and extends to 50 km (31 miles) high, with its highest concentration at about 25 km above the ground.

 

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