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  1. Solids cannot be __________________ because they have a definite ____________ and volume.

    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. Look at the classification table below.

    Livings things

    Animals

    		Plants Group Q Group R

    lion

    rose

    Jew's ear

    bacteria

    whale

    Hibiscus

    toadstool

    yeast


    Give a suitable heading for Group Q and Group R.

    Group Q: ____________________________

    Group R: ____________________________


    4. Your answer:

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  4. Study the flow chart carefully.

    Identify the letters (A, B, C and D) that represent the following objects.

    Object

    Letter

    Ceramic tile

    Window pane

    Plastic cup

    Wine bottle

    5. Your answer:

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  5. (a) The pie chart below shows the composition of different gases in the air. Identify Gas A and B.


    (b) Name one function of Gas B.

    6. Your answer:

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  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:

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  7. The equation below shows the respiration process during which energy is released for our body to use. Fill in the boxes with suitable word(s).
    a) ________________ + Sugar → Carbon dioxide + b) _______________

    8. Your answer:

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  8. The same amount of water is poured into each of the two containers, A and B, and left under the sun for a few days. It was later observed that the water in container A has disappeared and the water in container B has become lesser.

    a) What process has taken place in the above activity?
    b) Why has the water in container A dried faster than the water in container B?

    9. Your answer:

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  9. Look at the classification table below.


    (a) Based on the classification table above, what are the two characteristics of plant X?
    (b) Give an example of plant Y.

    10. Your answer:

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  10. Joanne collected some water from four different ponds, P, Q, R and S. She also collected some healthy duckweeds. Then she placed the duckweeds into the different containers of water according to the table below.

    Source of water

    P

    Q

    R

    S

    Amount of water

    500 ml

    500 ml

    500 ml

    500 ml

    Initial number of healthy duckweeds

    10

    10

    10

    10

    Number of duckweeds 2 days later

    10

    6

    8

    0

    Number of healthy duckweeds 4 days later

    10

    3

    6

    0


    (a) Which pond is the most suitable for the survival of the duckweeds?

    (b) What are two possible reasons why the duckweeds did not survive in the other ponds.


    11. Your answer:

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