WorksheetsWater and the aquatic environment
Total questions: 11
Worksheet time: 17mins
Water is gotten from source either below ground or above ground
pumping
Screening
Filtering
Settling
water is passed through screens which sieve out bulky debris
pumping
screening
settling
filtering
water is allowed to stand in a tank, which allows small debris to settle
screening
settling
filtering
chlorination
water is passed through a bed of sand and gravel where small solid particles are removed.
screening
settling
filtering
chlorination
Chlorine is added to kill micro-organisms that are harmful to humans.
Filtering
Chlorination
Aeration
Fluoridation
Air is re-introduced to the water by pumping it through tiny holes in a pipeline which causes it to spray out into the air.
filtering
chlorination
aeration
fluoridation
in this step fluorine is added to the water to help prevent tooth decay.
filtering
chlorination
aeration
fluoridation
Explain the difference in purity between boiled water and condensed evaporated water.
How can the taste of boiled water be improved?
Give three methods by which water can be purified at home in case of emergencies.
In the water cycle, change of state from gas to liquid is known as
Precipitation
condensation
evaporation
transpiration
