Free practice on Matter for Class 6, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
The water cycle includes evaporation, condensation and precipitation, which means rain. Condensation changes water vapour back into liquid water, forming clouds.
Explaining methods of purifying water could include boiling or filtering it before use. Differentiating sources of water includes recognising rain, rivers, wells and boreholes as different sources.
Sources of water: Rain · Rivers · Wells · Boreholes
The water cycle includes evaporation, condensation and:
Answer: C. precipitation (rain)
Which process changes water vapour back into liquid water, forming clouds?
Answer: D. Condensation
Explaining methods of purifying water could include:
Answer: A. boiling or filtering the water before use
Demonstrating changes in the state of matter, water can exist as:
Answer: B. solid ice, liquid water, or water vapour gas
Differentiating sources of water includes recognising:
Answer: C. rain, rivers, wells and boreholes as different sources
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