Pressure in daily life — task. Science CBSE, Class 8 New.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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Read the following situations carefully to answer the questions below.

Ravi inflates a balloon by blowing air into it. The balloon expands and becomes bigger.

1. Why does the balloon expand when air is blown into it?

The air inside the balloon exerts pressure on the balloon walls
The balloon absorbs air
The balloon becomes hot
The balloon becomes lighter

2. What does this activity show about air?

Air occupies space and exerts pressure
Air does not occupies space
Air does not move
Air has no weight

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