You must have played with gas balloons that keep rising higher and higher in the air. Why do these gas balloons rise?
A)The balloon is made of a special material whose density is less than air's.
B)The balloon is filled with a gas less dense than air.
C)The balloon is filled with a gas colder than air.
D)The thread of the balloon is made of a special material.
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Answer:
The Ballon is filled with gas less dence than air
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The answer is B)The balloon is filled with a gas less dense than air.
These balloons that float in the air are generally filled with helium gas. This gas is less dense than the air. It is lighter than the constituents of air, namely nitrogen and oxygen.
According to the Archimedes Principle, a less dense fluid is surrounded by a more dense fluid, will rise in the fluid till it starts floating.
Here, helium is less dense so it will rise in the air and at a certain height when the pressure of helium inside the balloon is more than the surrounding air then it will burst.
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