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  1. (a) When the plunger was pushed into the pump, what would be the volume of air in the metal vessel?
    (b) What does this experiment tell us about air?

    2. Your answer:

  2. The diagram below shows a millipede and a mimosa plant.

    (a) How do a millipede and a mimosa plant get their food?
    (b) How do they respond to touch?

    3. Your answer:

  3. Look at the diagrams below.

    (a) On which object (A, B or C) will fungus grow on?
    (b) How does fungi reproduce?

    4. Your answer:

  4. 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.

    5. Your answer:

  5. The boiling point of water is a) _________________ ° C and freezing point of water is b)________________ ° C.

    6. Your answer:

  6. Janice puts a car on an aluminium sheet. She then placed a magnet under the aluminium sheet as show in the diagram below. When she moved the magnet, the car also moved.

    (a) Suggest 2 possible materials the car can be made of. (2 m)
    (b) What conclusion can you draw from the above experiment? (2 m)

    7. Your answer:

  7. The diagram shows an umbrella.

    (a) What is the one most important property that a material must have to make it suitable for making part Y of the above umbrella?
    (b) If paper was used to make part Y, what must be added to the paper to make it a suitable material?
    (c) Aluminium is often used to make part Z. Why is aluminium a better choice than iron?

    8. Your answer:

  8. The graph below shows the tempreature changes of pure water in a beaker.

    a) What is the highest possible tempreature of pure water at W?
    b) What do you think happen from X to Y?

    9. Your answer:

  9. 25ml of water is poured into each of the containers A, B, C and D.


    a) Draw the water level for each container.
    b) Based on the above activity, what can you say about the property of liquids?

    10. Your answer:

  10. The table below shows the number of fish in a pond from the Years 2001 to 2003.
    Year Number of fish in the pond

    2001

    25

    2002

    50

    2003

    40

    (a) Give one possible reason why the number of fish increased in Year 2002?
    (b) Give one possible reason why the number of fish decreased in Year 2003?

    11. Your answer:

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