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3rd Grade ICSE
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09. Water As A Resource

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Answer in one line

Prepared by: learnloophq@gmail.com
Last edited 37 days ago by Learn LoopHQ.

Chapter: 09. Water As A Resource

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Answer in One Line

List two properties of water mentioned in the chapter.
Water is a liquid, and it is a universal solvent.
How does the rate of evaporation change when a liquid is boiled?
The rate of evaporation increases significantly when a liquid is boiled.
What happens when water vapour cools down, leading to the formation of water droplets on a cold surface?
When water vapour cools down, it condenses and changes into tiny liquid water droplets.
Name the three main processes involved in the water cycle.
The three main processes involved in the water cycle are evaporation, condensation, and precipitation.
What is the primary source of water covering the Earth’s surface?
The primary source of water covering the Earth’s surface is rainwater.
How do insoluble impurities differ from soluble impurities in water?
Insoluble impurities do not dissolve in water and can be seen easily, while soluble impurities dissolve in water and cannot be easily seen.
Why is it important to purify water before drinking it?
It is important to purify water before drinking it because it can contain dirt and harmful germs that can cause illness.
What is the easiest method to purify water at home to kill germs?
Boiling water for at least 10 minutes is the easiest method to purify it and kill germs at home.
What is the purpose of adding chlorine tablets to drinking water?
Chlorine tablets are added to drinking water to kill germs that cause waterborne diseases, thereby purifying the water.
Why should we conserve water, according to the chapter?
We should conserve water because it is a source of life and a limited resource that is essential for survival and future use.
In what ways can rainwater be collected for harvesting?
Rainwater can be collected from rooftops or from the ground, or a combination of both, into structures like tanks and check dams.
For what purpose can collected rainwater be used, especially during times of scarcity?
Collected rainwater can be used for drinking purposes during times of water scarcity or drought.
What is the process that causes water droplets to form on leaves in the morning or evening?
The process that causes water droplets (dew) to form on leaves is condensation of water vapour in the air.
What happens when clouds become very heavy during the water cycle?
When clouds become very heavy, the water droplets fall down to Earth in the form of rain or snow, which is called precipitation.
Mention two diseases that are waterborne.
Two diseases that are waterborne are cholera and typhoid (or dysentery/jaundice).
What is the main purpose of using a water filter at home?
The main purpose of using a water filter at home is to remove dirt and impurities from tap water to make it cleaner for drinking.
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