NCERT Class VII Science Solutions: Chapter 8-Winds, Storms and Cyclones Part 2

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Question 3:

State two experiences that made you think that air exerts pressure (other than those given in the text).

Answer:

We can experience air pressure in our daily activities such as:

  • Tree leaves and branches flutter due to pressure exerted by air in the form of wind.

Image result for a pressure exerted by air in the form of wi …

Pressure Exerted by Air in the Form of Wind

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  • It is difficult to ride a bicycle against the wind but it is much easier in the direction of wind.

Image result for a easier in the direction of wind.

Result for a Easier in the Direction of Wind

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Question 4:

You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.

Answer 4:

Smoke from kitchen and warm air being lighter rise up. If there is no outlet like ventilators, it will be difficult to escape for warm air and will heat up the room and could cause suffocation and discomfort.

As showing in images is a ventilators

Ventilators

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