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JSS1: BASIC SCIENCE - 1ST TERM

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  1. Introduction to Science | Week 1
    4Topics
    |
    1 Quiz
  2. Family Health | Week 2
    6Topics
    |
    1 Quiz
  3. Family Health (Sanitation) | Week 3
    4Topics
    |
    1 Quiz
  4. Family Health (Nutrition) | Week 4
    8Topics
    |
    1 Quiz
  5. Drug and Substance Abuse | Week 5
    3Topics
    |
    1 Quiz
  6. Environmental Pollution: Air Pollution | Week 6
    3Topics
  7. Soil pollution | Week 7
    2Topics
  8. Water Pollution | Week 8
    4Topics
    |
    1 Quiz
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Consequences of Air Pollution:

  • Carbon monoxide: In low concentration dizziness, headache, nausea, and tiredness are caused. If inhaled for a long period even in low concentration, it causes brain damage, at a higher concentration, it can cause unconsciousness and eventually death. It reacts with haemoglobin in the blood, preventing it from taking oxygen, and forms carboxyhemoglobin, which can lead to death by suffocation.
  • Sulphur Dioxide: It causes lung diseases in humans. It changes the green colour of plants’ leaves and corrodes metals.
  • Nitrogen oxides: This causes lung irritation, suffocation, disease in plants, and corrosion of metallic objects.
  • Hydrogen sulphide: It has a rotten egg smell which is irritating and can cause suffocation to humans.
  • Dust: This can cause injury to the eyes, noses and ears.
  • Smoke: This causes injury to the lung of the respiratory tracts and discomfort to man. Smoke from cigarettes causes lung cancer, asthma, and chronic bronchitis. It also causes eye irritation, respiratory ailment, and nausea.
  • Radioactive: Radioactive rays are very dangerous to health and can destroy genes.
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Control Measures of Air pollution:

1. Proper maintenance of machinery, motor vehicles, boilers, furnaces, and chimneys.

2. Planting of trees: Plants can use carbon oxide for photosynthesis, and at the same time release oxygen into the atmosphere

3. Cover noses properly with a white clean handkerchief, if you accidentally get to an air polluted area.

Evaluation Question:

1. State four examples of air pollution and its sources.

2. List three consequences of air pollution.

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