P6 Science · Chapter 12brightbit.net/worksheets
Cycles in Nature
Name: ______________________Class: ________Date: ____________Score: ____ / 10
- 1.
In the water cycle, water from oceans and lakes rises into the air as water vapour. This process is called —
(a) Condensation(b) Precipitation(c) Evaporation(d) Collection
- 2.
When water vapour in the air cools and forms tiny water droplets that make clouds, this is called —
(a) Evaporation(b) Condensation(c) Precipitation(d) Transpiration
- 3.
Rain, snow, and hail falling from clouds to the ground is called —
Answer: ____________________________________
- 4.
Which process in the water cycle involves plants releasing water vapour from their leaves?
(a) Evaporation(b) Precipitation(c) Transpiration(d) Condensation
- 5.
Why is the water cycle important for living things?
(a) It creates new water that did not exist before(b) It ensures a continuous supply of fresh water for plants and animals(c) It removes all salt from the oceans(d) It stops rain from happening
- 6.
In the carbon cycle, plants take in carbon dioxide from the air during —
(a) Respiration(b) Decomposition(c) Photosynthesis(d) Evaporation
- 7.
Carbon dioxide is returned to the air when animals and plants carry out —
(a) Photosynthesis(b) Respiration(c) Transpiration(d) Condensation
- 8.
Which human activity adds the MOST carbon dioxide to the carbon cycle?
(a) Planting trees(b) Breathing(c) Burning fossil fuels(d) Drinking water
- 9.
What role do decomposers play in the carbon cycle?
(a) They absorb carbon dioxide from the air(b) They break down dead organisms and release carbon dioxide back into the air(c) They convert carbon dioxide into oxygen(d) They have no role in the carbon cycle
- 10.
A student says: 'The water on Earth today is the same water that existed millions of years ago.' Is this statement correct?
(a) No, new water is constantly being created(b) Yes, the water cycle continuously recycles the same water(c) No, old water evaporates into space and is replaced(d) Yes, but only the water in oceans stays the same
Answer key — P6 Science: Cycles in Nature
For parents. Step-by-step explanations for every question are free on brightbit.net.
- 1.(c) Evaporation
- 2.(b) Condensation
- 3.precipitation
- 4.(c) Transpiration
- 5.(b) It ensures a continuous supply of fresh water for plants and animals
- 6.(c) Photosynthesis
- 7.(b) Respiration
- 8.(c) Burning fossil fuels
- 9.(b) They break down dead organisms and release carbon dioxide back into the air
- 10.(b) Yes, the water cycle continuously recycles the same water
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