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Explain why a balloon expands when taken to a higher elevation if the temperature remains constant?
Responses
A The decrease in atmospheric pressure allows the balloon wall to become more elastic.The decrease in atmospheric pressure allows the balloon wall to become more elastic.
B The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.
C The increase in atmospheric pressure pushes the walls of the balloon outward thus making it larger.The increase in atmospheric pressure pushes the walls of the balloon outward thus making it larger.
D The increase in atmospheric pressure forces the gases to push harder on the balloon increasing its size.
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B The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.
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B. The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.
Explanation:
When a balloon is taken to a higher elevation, the atmospheric pressure decreases. However, the pressure inside the balloon remains constant because the temperature is also constant. According to Boyle's Law, which states that the pressure of a gas is inversely proportional to its volume, when the external pressure decreases, the gas inside the balloon pushes against the balloon walls with a greater force. This causes the balloon to expand and increase in size. The gases inside the balloon exert a greater pressure relative to the lower atmospheric pressure, resulting in the balloon expanding.
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