Water Conservation

25 Grade 4 Integrated Science questions on Water Conservation, with worked marking schemes. 25 questions are available on this topic in full.

1. Question 1

   3 marks

   State three ways in which pupils can conserve water while at school.

   (3 marks)

   Marking scheme

   Any three (1 mark each): close taps tightly after use; report leaking taps to a teacher; use water sparingly when washing hands or utensils; harvest rainwater; reuse water for watering plants.

2. Question 2

   1 mark

   A family uses the water that washed vegetables to water the flowers in the garden. This is an example of

   A. Boiling water

   B. Wasting water

   C. Polluting water

   D. Reusing water

   (1 mark)

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3. Question 3

   1 mark

   Which activity makes the water in a river dirty (polluted)?

   A. Planting trees along the river bank

   B. Fencing the river to keep animals away

   C. Fetching water in clean containers

   D. Throwing rubbish into the river

   (1 mark)

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4. Question 4

   3 marks

   (a) What is water harvesting?

   (b) Give one method of harvesting rainwater at home.

   (3 marks)

   Marking scheme

   (a) Water harvesting is collecting and storing water (especially rainwater) so that it can be used later (2 marks). (b) Any one (1 mark): using gutters on the roof to direct rainwater into a tank/drum; digging a pan/dam to collect runoff.

5. Question 5

   1 mark

   Collecting rainwater from the roof into a tank for later use is called

   A. Evaporation

   B. Irrigation

   C. Water harvesting

   D. Water pollution

   (1 mark)

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6. Question 6

   1 mark

   A tap in the kitchen keeps dripping. What is the best thing to do to save water?

   A. Leave the tap as it is

   B. Open the tap wider

   C. Remove the sink

   D. Repair the tap

   (1 mark)

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7. Question 7

   3 marks

   State three ways in which water is commonly wasted at home.

   (3 marks)

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8. Question 8

   1 mark

   Why is it important to conserve water?

   A. Water cannot be used up

   B. Water is scarce and needed for life

   C. There is too much water everywhere

   D. Water is very cheap to buy

   (1 mark)

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9. Question 9

   1 mark

   Which of the following is a source of water?

   A. Market

   B. School

   C. Road

   D. River

   (1 mark)

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10. Question 10

    1 mark

    Which container is best for storing harvested rainwater?

    A. A basket

    B. A tank

    C. A sieve

    D. A fishing net

    (1 mark)

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11. Question 11

    1 mark

    Planting trees helps to conserve water because trees

    A. Dry up the rivers quickly

    B. Hold water in the soil and reduce water running off

    C. Use up all the water in the ground

    D. Make the water dirty

    (1 mark)

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12. Question 12

    3 marks

    (a) Suggest two ways of reusing water at home.

    (b) Give one benefit of reusing water.

    (3 marks)

    Marking scheme

    (a) Any two (1 mark each): use water that washed vegetables/clothes to water plants; use bath water to clean the floor or toilet. (b) It saves water / saves money / reduces wastage (1 mark).

13. Question 13

    1 mark

    Water conservation means

    A. storing water in dirty containers

    B. using water wisely and avoiding wastage

    C. pouring water on the ground

    D. using as much water as possible

    (1 mark)

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14. Question 14

    2 marks

    A tap in the school compound has been dripping for a whole week.

    (a) State one problem caused by the dripping tap.

    (b) Suggest one action the pupils should take.

    (2 marks)

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15. Question 15

    4 marks

    (a) Name two sources of water in your area.

    (b) State two ways of keeping water sources clean.

    (4 marks)

    Marking scheme

    (a) Any two (1 mark each): river, borehole, well, spring, rain, dam, lake, tap/piped water. (b) Any two (1 mark each): do not throw rubbish into water; fence the source; keep animals away; do not bathe or wash clothes at the source; plant trees around it.

16. Question 16

    3 marks

    Explain how planting trees helps to conserve water.

    (3 marks)

    Marking scheme

    Tree roots hold the soil and water so that water soaks into the ground instead of running off; trees provide shade that reduces water drying up (evaporation); they help attract rain (any two–three points, 3 marks).

17. Question 17

    1 mark

    Which of these best shows a pupil using water sparingly?

    A. Filling a full bathtub every day

    B. Hosing the whole compound each morning

    C. Leaving the tap open while soaping hands

    D. Using a cup of water to rinse the mouth

    (1 mark)

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18. Question 18

    1 mark

    Dirty water can be made safe for drinking by

    A. mixing it with cold water

    B. adding soil to it

    C. leaving it in the sun for a minute

    D. boiling it

    (1 mark)

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19. Question 19

    1 mark

    Which of the following is a way of conserving water at home?

    A. Playing with water from the tap

    B. Closing the tap while brushing teeth

    C. Leaving the tap running while washing

    D. Washing the car with a running hose

    (1 mark)

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20. Question 20

    1 mark

    Covering the soil around plants with dry grass to reduce the amount of water that dries up is called

    A. Pumping

    B. Mulching

    C. Harvesting

    D. Draining

    (1 mark)

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21. Question 21

    1 mark

    Rainwater can be collected and stored by

    A. leaving it to flow into drains

    B. harvesting it from rooftops into tanks

    C. pouring it back onto the roof

    D. mixing it with oil

    (1 mark)

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22. Question 22

    1 mark

    To lose the least water through drying up, the best time to water a kitchen garden is

    A. Early morning or evening

    B. Whenever the sun is hottest

    C. At exactly noon

    D. Hot midday

    (1 mark)

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23. Question 23

    1 mark

    Water is important for all of the following EXCEPT

    A. cooking

    B. drinking

    C. starting fires

    D. washing

    (1 mark)

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24. Question 24

    1 mark

    Which of the following is a way to conserve water at home?

    A. Turning off the tap when not in use

    B. Washing clothes in a river

    C. Pouring excess water on the road

    D. Leaving taps running all day

    (1 mark)

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25. Question 25

    4 marks

    Give two reasons why we should conserve water.

    (4 marks)

    Marking scheme

    Any two reasons explained (2 marks each): water is scarce and is not always available, so we must save it; all living things need water to survive; conserving water saves money; it prepares us for dry seasons and droughts.

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