Specific Heat of Water - Why is water used in hot water bags? | #aumsum #kids #science

Topic: Specific heat of water
Why is water used in hot water bags?
Looks like your leg is hurting.
Use this hot water bag.
It will give you some warmth and provide you relief.
No. The bandage is not going to help.
See. I told you.
At least now will you use this hot water bag?
You are feeling better, right?
Do you know how a hot water bag gave you warmth for such a long time?
This is due to a concept called specific heat.
Specific heat of a substance is the amount of heat energy absorbed or lost by that substance to change its temperature.
Now, the hot water bag consists of hot water.
As compared to other liquids like milk and acetone, the specific heat of water is much higher.
This means that as compared to others, water needs to absorb a large amount of heat to become hotter.
Now, did you know that water will take a long time to cool down as compared to milk and acetone?
Thus, water will take a longer time to become cool.
Hence, it proves to be very useful in hot water bags because the warmth can be utilized for a longer time.

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