Podcast
Questions and Answers
What happens to atmospheric pressure as altitude increases?
What happens to atmospheric pressure as altitude increases?
- It increases
- It fluctuates
- It remains constant
- It decreases (correct)
Why is mercury preferred as a barometric liquid in barometers?
Why is mercury preferred as a barometric liquid in barometers?
- It is a dull liquid
- It wets glass easily
- It has a high density (correct)
- It has a low density
What property of mercury makes it easily visible in a barometer?
What property of mercury makes it easily visible in a barometer?
- It wets glass easily
- It is a shiny liquid (correct)
- It is a dull liquid
- It is not shiny
Who was the Italian scientist credited with first measuring atmospheric pressure using a barometer?
Who was the Italian scientist credited with first measuring atmospheric pressure using a barometer?
Why does the mercury level in a barometer decrease when taken up a mountain?
Why does the mercury level in a barometer decrease when taken up a mountain?
What characteristic of mercury prevents it from wetting glass in a barometer?
What characteristic of mercury prevents it from wetting glass in a barometer?
What is the purpose of an 'aneroid barometer'?
What is the purpose of an 'aneroid barometer'?
How does an aneroid barometer work?
How does an aneroid barometer work?
What is the role of the lift pump mentioned in the text?
What is the role of the lift pump mentioned in the text?
How does atmospheric pressure help in drinking through a straw?
How does atmospheric pressure help in drinking through a straw?
What happens when air is expelled out of a tin can due to heating according to the text?
What happens when air is expelled out of a tin can due to heating according to the text?
What purpose does a syringe or perfume spray serve according to the text?
What purpose does a syringe or perfume spray serve according to the text?
What happens to the water level in the cylinder when valve v1 is closed?
What happens to the water level in the cylinder when valve v1 is closed?
Why does water rush above the piston when the pressure in the cylinder increases?
Why does water rush above the piston when the pressure in the cylinder increases?
What is a limitation of using a mercury barometer?
What is a limitation of using a mercury barometer?
Why would it be impractical to use water as a barometric liquid?
Why would it be impractical to use water as a barometric liquid?
What happens when the pressure inside the cylinder decreases during the piston's upward movement?
What happens when the pressure inside the cylinder decreases during the piston's upward movement?
How does water rise from the well into the cylinder?
How does water rise from the well into the cylinder?
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