Water vapours enter the air (or atmosphere) by which of the following processes? (a) Evaporation of ocean water (b) Transpiration occurring in plants (c) By evaporation of sweat of animals (d) All of the above
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5
The process of changing of water into its vapour is called .................... .
evapouration
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15
Fill in the blanks selecting words from the following list snow, rain, clouds, vapour, evaporation, transpiration. Water, as ............. goes into atmosphere by the processes of ............. and ............. and forms ............., whi
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trap
No points!
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star
Double points!
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gift
Win 25 points!
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banana
Go to last place!
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heart
Other team wins 20 points!
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seesaw
Swap points!
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shark
Other team loses 25 points!
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banana
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15
Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler. ( )
True
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15
Water evaporates into air from oceans, rivers and lakes but not from the soil. ( )
False
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lifesaver
Give 15 points!
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star
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rocket
Go to first place!
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lifesaver
Give 25 points!
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15
What percentage of water is readily available to us? (a) 3% (b) 97% (c) 60% (d) 40%
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15
No rainfall for a year or more may lead to .................... in that region.
Drought
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15
The process of changing water vapour into water is called ....................