Question

When we hold a very hot glass tumbler under cold water, why does it crack?
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Answer 1

Explanation:

Glass shrinks a little when it cools. By putting a hot glass into cold water, you are forcing it to shrink faster on the surface than inside the walls of the tumbler. Essentially the glass is cracking to relieve the stress created by that shrinkage.

Answer 2

Answer:

Explanation:

because there is two powers acting

but you think when we take a glass bottle and threw it in flame it bursts due to the  molecules of fire and the drink together form a reaction to burst

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