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JSS2: BASIC TECHNOLOGY - 1ST TERM

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  1. Definition of First Aid | Week 1
    7Topics
    |
    1 Quiz
  2. Rescue Operation | Week 2
    3Topics
    |
    1 Quiz
  3. Materials & Their Common Uses (Wood) | Week 3
    6Topics
    |
    1 Quiz
  4. Materials & their Common Uses (Metal) | Week 4
    5Topics
    |
    1 Quiz
  5. Uses of Common Alloys ( Brass & Bronze) | Week 5 & 6
    8Topics
    |
    1 Quiz
  6. Uses of Ceramics And Glass (Contd) | Week 7 & 8
    4Topics
    |
    1 Quiz
  7. Uses of Plastics | Week 9
    4Topics
    |
    1 Quiz
  8. Uses of Rubber | Week 10
    3Topics
    |
    1 Quiz
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Glass is a hard, usually transparent substance that easily breaks when hit. It is usually formed by melting and mixing sand and oxides of sodium or calcium-soda or limestone at a very high temperature of 3090°F and allowing them to cool. It can be coloured by adding some substances to it while in the molten state.

Making Glass
Glass is formed at high temperatures.

Glass is useful in homes as

  • Glass cups
  • Dressing mirrors
  • Ornamental decorations, etc.
Glass Cups
Glass Cups.

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