Question

4. You want to buy a house. Would you like to buy a house having windows
but no ventilators? Explain your answer.
5. Explain why holes are made in hanging banners and hoardings.​

Answer 1

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•> It is not a good idea to buy a house without ventilators because warm air is lighter than cold air hence warm air passes out of your home through ventilators.

•> Holes are made in hanging banners and hoardings so that air can pass through them easily and to reduce the air pressure.

Answer 2

Answer:

A house having windows but no ventilators should not be bought. This is because warm air is lighter than cold air and therefore, it goes up. This warm air can go outside the house mostly through ventilators. If there are no ventilators, then the warm air cannot go outside easily.