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Water cycle and saving water
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How many litres of water can you save if you turn of the tap while you brush your teeth?
18 litres
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List the steps of the water cycle.
1. Evaporation 2. Condensation 3. Precipitation 4. Collection
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At what temperature does water boil?
100 degrees Celsius
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How is a cloud formed?
By the condensation of water vapour.
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At what temperature does water freeze?
0 degrees Celsius
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The water vapour in the air changes from gas to a liquid. What is the process called?
Condensation
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World water day is on
22nd March every year
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To turn (change) from a gas into a liquid.
Condense
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The precipitation collects in rivers, lakes and oceans. What is the process called?
Collection
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What type of energy controls evaporation and condensation?
The sun producing heat energy.
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Water in the gaseous state of matter
Water vapour
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Layers of gas that surround a planet and keep it warm.
Atmosphere
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The heat from the sun turns water of rivers, lakes and oceans into a gas. What is the process called?
Evaporation
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Why should you water the garden in the early morning or in the late afternoon?
Because it will reduce evaporation
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What does cloud formation depend on?
Temperature, humidity, pressure
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Water that is released from clouds in the sky; includes rain, snow, sleet, hail.
Precipitation
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