Give reason why ventilator keep the room cool. Class 7
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Answer:
Explanation:
Ventilators are provided in the rooms at the top of the roofs because if the air inside the room gets hot, the hot air rises up and flows through these ventilators and thus cool air remains at bottom. ... Thus ventilators maintain conventional currents to keep the air fresh in the room.
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7
Answer:
When the hot air rises, the ventilator sucks in all the air and lets it outside the house. Since the cool air is heavier, it remains in the bottom and doesn't get sucked up by it. Hence, in the room there is only cool air and not hot air.
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