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  1. The source of the Sun's energy is the process of

    2. A.

     Photoelectric emission
    B.

     Nuclear fission
    C.

     Nuclear fusion
    D.

     Thermionic emission

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  2. Hot springs are heated geothermally by underlying

    3. A.

     Water
    B.

     Magma
    C.

     Mitula
    D.

     None of the above

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  3. Which of the following is the cleanest source of energy?

    4. A.

     Biofuel
    B.

     Fossil fuel
    C.

     Nuclear power
    D.

     Wind energy

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  4. The Solar energy produced by

    5. A.

     Fusion reaction
    B.

     Fission reaction
    C.

     Combustion reaction
    D.

     None

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  5. The oldest type of energy known to man is

    6. A.

     Wind power
    B.

     Solar power
    C.

     Tidal energy
    D.

     Geothermal energy

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  6. The energy emitted by the Sun is due to

    7. A.

     Chemical reaction
    B.

     Nuclear fission
    C.

     Nuclear fusion
    D.

     All of the above

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  7. Where does hydroelectric energy come from?

    8. A.

     Air
    B.

     Water
    C.

     Solar
    D.

     All of the above

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  8. Which colour has the highest energy?

    9. A.

     Violet
    B.

     Red
    C.

     Blue
    D.

     White

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  9. Red is used as an emergency or danger signal as

    10. A.

     It is a striking colour
    B.

     Its wavelength is the longest
    C.

     It is scattered
    D.

     It has very high energy

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  10. Which of these travels in glass with minimum velocity ?

    11. A.

     Red light
    B.

     Violet light
    C.

     Green light
    D.

     Yellow light

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