Formative Practice 5.3 – Science Form 2 Chapter 5

Question 1:
Name three impurities found in natural water resources.

Answer:
Dissolved mineral salts, solid suspended particles and microorganisms.

Question 2:
State water purification methods that can remove impurities in water.

Answer:
Filtration and distillation
(Any other answers are accepted)

Question 3:
What are the major water pollution problems in coastal areas and in the sea?

Answer:
Oil spillage and disposal of industrial waste.
(Any other answers are accepted)

Question 4:
Determine whether the following statements are True or False. Write your answers in the space provided.


Answer:
(a) False
(b) True
(c) False

Question 5:
Explain three ways to control water pollution.

Answer:
– Develop a waste disposal system.

– Encourage the usage of biodegradable fertiliser in agricultural sector.

– Strict law enforcement

(Any other answers are accepted)