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Why echo more hear in night …

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Why echo more hear in night compar to mid day

Posted by Sushant Pandey 1 year, 8 months ago

CBSE > Class 09 > Science

1 answers

Adarsh Ojha 1 year, 8 months ago

After sunset, the surface near the earth cools down more than air in succeeding layers above. Hence, the distant sounds can be heard as the sound waves get refracted and reach the receiver which is present at a distant point. During the day, the sound bends away from the ground; during the night, it bends towards the ground. Hence at night, you have additional "sound" reaching you, making it louder.

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Posted by Abhi Sandhu 1 month, 2 weeks ago

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Posted by Samir Chakma 3 weeks, 3 days ago

CBSE > Class 09 > Science