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(No Score) 7 Sec

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  1. Tim used the apparatus below to make a model of our breathin system.


    a) Describe what Tim should do if he wanted the balloons to inflate as much as possible.
    Ans:_______________
    b) The bell jar in the set-up represents our rib cage whilst the rubber sheet represents our diaphragm.
    i) How is the bell jar different from our rib cage during breathing?
    Ans:_____________
    ii) The rubber sheet above is different from our diaphragm when we exhale. Draw in the space below how each would look like when we exhale.



    2. Your answer:

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  2. Digestion is a process in which our body breaks down food into simpler substances.
    (a) What is the first step in the digestion process?
    (b) Why is porridge easier to digest than rice?

    3. Your answer:

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  3. The diagram below shows the tiny openings found on a certain part of a plant.

    (a) What are these tiny openings called?
    (b) Give one reason why the tiny openings are important to plants?
    (c) On which part of the plant are these openings mainly found?

    4. Your answer:

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  4. Daud inverts a plastic cup and pushes it into a water trough. He notices that the water does not enter the cup.

    a) What can Daud conclude from the experiment?
    b) He then proceeds to pierce a hole at the bottom of the cup. Draw the water level in the cup and the water level in the water trough in the diagram below.

    c) Explain the reason for the water level in b).

    5. Your answer:

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  5. When water gains heat, it changes from the _____________ state to the __________________ state.

    6. Your answer:

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  6. Write 'T' for true statements or 'F' for false statements in the blanks provided below.
    (a) All new plants grow from seeds. _____
    (b) Mushrooms are non-living things. _____
    (c) Plants take in water through the roots. _____
    (d) Plants and animals are alike because they can grow and die. _____

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  7. Water can change from one state to another. In the freezer, water _____ heat and changes from a liquid to a solid.

    8. Your answer:

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  8. Look at the diagram below. Jane grouped the following animals into two groups, A and B but she forgot to fill in the headings.
    Fill in Jane's headings in the space provided in the diagram.


    9. Your answer:

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  9. The diagram below shows a balsam plant and mould growing on a piece of bread.

    State the difference between how a balsam plant and mould reproduce.

    10. Your answer:

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  10. Cindy boiled a flask of water. She then placed a metal tray above the flask as shown.


    a) What would Cindy observe on the underside of the tray after a while?
    b) Explain your answer in (a) above.

    11. Your answer:

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