case /data -based (4 Marks)

Question 14 Marks

The picture shows how rainwater is stored in tanks for home use.

9. Is the water collected in the water tank safe for drinking? Explain your answer.
10. Why is rainwater harvesting important?
$A.$ To help plants grow better
$B.$ To reduce water pollution
$C.$ To collect water that is rich in minerals
$D.$ To reduce the demand for water supply

Answer

$9.$ Mentions that rainwater is not safe for drinking as it contains impurities
like dusts and germs.
For example
● No. Rainwater contains impurities like dust, germs/microbes.
$10. D.$ To reduce the demand for water supply

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Question 24 Marks

The picture shows the four different stages of the water cycle.

$5.$ Which stage shows the process of transpiration?
$A.$ Stage $1$
$B.$ Stage $2$
$C.$ Stage $3$
$D.$ Stage $4$
$6.$ In which stage does water vapour condense to form water droplets?
$A.$ Stage $1$
$B.$ Stage $2$
$C.$ Stage $3$
$D.$ Stage $4$
$7.$ On which day will stage $1$ of the water cycle progress the slowest?
$A.$ A hot and sunny day
$B.$ A cold and sunny day
$C.$ A hot and cloudy day
$D.$ A cold and cloudy day
$8.$ Which of the following statements about the water cycle is true?
Circle $‘Yes’$ or $‘No’$ for the correct response.

Is the statement about the water cycle true?	$Yes$ or $No$
Some water is lost to the space during the water cycle.	$Yes/No$
Water from the ocean and land goes into air as vapour.	$Yes/No$
Water cycle is a continuous process.	$Yes/No$

Answer

$5. B.$ Stage $2$
$6. C.$ Stage $3$
$7. D.$ A cold and cloudy day
$8.$ Yes
Yes
No

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Question 34 Marks

The table shows the amount of water required for different activities in a house.

Activity	Amount of water used daily
Drinking	$15$ litres
Washing clothes	$35$ litres
Flushing toilets	$60$ litres
Mopping floor	$20$ litres

$1.$ Which graph correctly shows the data in the table?

$2.$ Which activity in the house requires the most water?
$A.$ Drinking
$B.$ Washing clothes
$C.$ Flushing toilets
$D.$ Mopping loor
$3.$ Which of these activities helps to prevent wastage of water?
$A.$ Water plants with drinking water
$B.$ Wash vegetables in running tap water
$C.$ Pour water with buckets to clean a cycle
$D.$ Close shower when applying shampoo on hair
$4.$ Which of these are the effects of loods?
Circle $‘Yes’$ or $‘No’$ for the correct response.

Is this an effect of lood?	$Yes$ or $No$
Heating the magnet on ire	$Yes/No$
Loss of domestic animals	$Yes/No$
Decrease in groundwater level	$Yes/No$

Answer

$1. C.$ Graph
$2. C.$ Flushing toilets
$3. D.$ Close shower when applying shampoo on hair
$4.$ Yes
Yes
No

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Science case /data -based (4 Marks)

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