Water can be purified by sedimentation, decantation
-. The change of water into vapour is called ..
Due to
In nature, we observe dew, fog, fr
ts Practice Time
iswer the following questions:
Why is it hotter at noon than in the morning and e
What is evaporation?
What is condensation?
What is the role of sun in changing weather?
How is dew formed?
Why do wet clothes dry quickly on a sunny day?
How is fog formed?
· What are sedimentation and decantation?
· What is frost? How is it formed?
. Describe how will you purify water by filtration.
ill in the blanks:
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Answers
Answer:
5.When water is warm it evaporates much quicker than when water is cool. Therefore, the heat from the sun helps to dry clothes quickly. ... Wet clothes dry in sunshine because the water that makes them wet evaporates. This means that the water turns into a gas and becomes part of the air.
6.Sedimentation and decantation methods are used for the separation of insoluble substances which are heavier than liquid. In the sedimentation process, heavier components of the mixture settle on the bottom, due to gravity. Decantation follows sedimentation.
7.Frost forms when an outside surface cools past the dew point. The dew point is the point where the air gets so cold, the water vapor in the atmosphere turns into liquid. This liquid freezes. If it gets cold enough, little bits of ice, or frost, form.
8.Filtration eliminates both large compounds and small, dangerous contaminants that cause diseases with a simple and quick filtration process.. Since filtration does not deplete all the mineral salts, water that has been filtered is considered healthier compared to water purified using other methods.