Page 96 - Science - 5

While the clean water passes through the pipes, it
may get contaminated. To make sure that the water
is germ-free, we can boil it or use water filters at our

homes, to kill the germs.
Million Dollar Talk

“Water is precious, we should not waste it."

Quenching Your Scientific Thirst
Quenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific Thirst
Quenching Your Scientific Thirst
Quenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific ThirstQuenching Your Scientific Thirst
Oxygen therapy is used as a common
medical treatment.

Scientific Terms
Atmosphere : a layer of air surrounding the Earth
Impurities : substances in water which make it unfit for drinking
Filtration : liquid is allowed to pass through a filter to separate insoluble
impurities

Chapter at a Glance

³ Air contains oxygen, nitrogen, carbon dioxide, dust, smoke and germs.
³ An atmosphere is the thick layer of air that surrounds the Earth and is held by the
Earth’s gravity.
³ Five layers of the atmosphere are troposphere, stratosphere, mesosphere,
thermosphere and exosphere.
³ Air occupies space, has weight, is required for burning and exerts pressure.
³ The insoluble impurities of water can be separated by sedimentation - decantation and
filtration.
³ The soluble impurities can be separated by evaporation and distillation.

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Based on The Latest Pattern of New Education Policy 2020.
Based on The Latest Pattern of New Education Policy 2020.
Based on The Latest Pattern of New Education Policy 2020.
Based on The Latest Pattern of New Education Policy 2020.
Based on The Latest Pattern of New Education Policy 2020.
Based on The Latest Pattern of New Education Policy 2020.
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(Learning with Fun Containing all the Desired New Styled Questions)
(Learning with Fun Containing all the Desired New Styled Questions)
(Learning with Fun Containing all the Desired New Styled Questions)
(Learning with Fun Containing all the Desired New Styled Questions)
(Learning with Fun Containing all the Desired New Styled Questions)
(Learning with Fun Containing all the Desired New Styled Questions)
You And Your Text
You And Your Text
Fill in the blanks with the correct word :
nitrogen oxygen troposphere distilled water carbon-dioxide
1. Fishes breathe in dissolved ___________ in water.
2. Air contains 78% of ___________ .

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