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  1. Sue conducted several test on materials, A, B, C and D, and tabulated her results below.

    Properties A B C D

    ability to stretch

    no

    yes

    no

    yes

    breaks easily

    when dropped

    yes

    no

    no

    no

    waterproof

    yes

    yes

    yes

    no


    (a) What material could Sue use to make a swimming cap which can keep her hair dry?

    (b) Could Sue give a toy made of material A to a baby?

    (c) Give a reason for your answer in (b).


    2. Your answer:

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  2. Animal X has the following characteristics:
    Method of reproduction
    Lay eggs
    Gives birth to its young
    No
    Yes
    Type of outer covering
    Hair / Fur
    Feathers
    Scales
    Yes
    No
    No
    Number of legs/limbs
    2
    4
    6
    No
    Yes
    No

    (a) Which group of animals does animal X belong to?
    (b) Give an example of animal X.

    3. Your answer:

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  3. The diagram below shows the life cycle of a cockroach.

    a) Which group of animals does the cockroach belong to?
    b) Explain your answer in (a). Which characteristics is clearly seen from the diagram?
    c) At Stage Y, what is the cockroach known as?

    4. Your answer:

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  4. The diagram below shows the human respiratory system.

    (a)Name the parts labeled X and Y in the figure shown above.
    (b)What happen to parts X and Y when you are breathing in?
    (c)What is the similarity between the function of stomata in plants and the lungs of the human being?

    5. Your answer:

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  5. Linda conducted an experiment to find out how the exposed surface area affects the rate of evaporation. She followed these steps:


    Step 1: She used four identical towels T, U, V and W.

    Step 2: She folded each of the towels in different ways.

    Step 3: She placed each of the towels on a tray.

    Step 4: She poured one glass of water to each of the four towels.

    Step 5: She checked for the dryness of the towels at hourly intervals.


    She recorded the results of her observations in the table shown below.


    Order Towel

    1st to dry

    U

    2nd to dry

    V

    3rd to dry

    W

    4th to dry

    T

    (a) Based on the results, match the towel to the number of times it was folded.

    (b) Which towel had the biggest and the smallest exposed surface area?
    (i) Biggest exposed surface area : _________
    (ii) Smallest exposed surface area : ______

    (c) How does the amount of exposed surface area affect the rate of evaporation?


    6. Your answer:

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  6. (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.

    7. Your answer:

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  7. Alice set up 2 experiments to demonstrate 2 different processes as shown below.


    Alice noticed that water droplets were formed in both set-ups.
    (a) Draw in the 2 set-ups where water droplets can be seen.
    (b) Name a process that took place in each set-up.
    Set-up A:___________
    Set-up B:____________

    8. Your answer:

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  8. a) In the water cycle, heat is needed for water to evaporate. Where does this heat come from? __________________
    b) Why is the water cycle important to man? __________________

    9. Your answer:

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  9. The diagram below shows part of the water cycle.


    (a) Name the process taking place at A.
    (b) In the diagram, draw two arrows to show how plants can be part of this water cycle.

    10. Your answer:

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  10. a) The diagram below shows a plant. In the diagram, label and name 3 parts of the plant that is involved in photosynthesis.

    b) In the table below, list the plant parts and their function in relation to photosynthesis.

    Part Name

    Function








    11. Your answer:

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