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JSS2: BASIC SCIENCE - 1ST TERM

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  1. Living Things (Habitat) | Week 1, 2 & 3
    8 Topics
    |
    1 Quiz
  2. Living Things (Uniqueness of Man) | Week 4
    9 Topics
    |
    1 Quiz
  3. Growth and Development | Week 5 & 6
    4 Topics
    |
    1 Quiz
  4. Chemicals | Week 7 & 8
    4 Topics
    |
    1 Quiz
  5. Work, Energy & Power | Week 9
    4 Topics
    |
    1 Quiz



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Topic Content:

  • Meaning of Growth
  • Growth Changes in Height
  • Growth Changes in Weight
  • Growth Changes in Size

Meaning of Growth:

Growth can be defined as an irreversible increase in the size and weight of an organism, due to the addition of new body cells. It must be noted that for growth to occur, the rate of synthesis (formation) of materials (anabolism) must exceed the rate of breakdown of materials (catabolism) therefore, the ability of living things to build up their own complex, organized bodies from materials in the environment is the ability to grow, and it is a characteristic of life.

Growth can be measured by measuring mass, height, length as well as size. The height of an individual can be measured using a height scale while weight can be measured using weighing scales.

Growth Changes in Height:

Height is the increase in the length of a living organism and is measured in metres. The fastest period of growth is before birth, with the baby growing from almost zero to a length of about 50 cm in nine months.

 

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