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Questions and Answers
What is the typical liquid used in a barometer?
What is the typical liquid used in a barometer?
- Water
- Mineral oil
- Mercury (correct)
- Alcohol
What does a barometer measure?
What does a barometer measure?
- Humidity
- Atmospheric pressure (correct)
- Temperature
- Wind speed
What is the purpose of the figure on a barometer scale?
What is the purpose of the figure on a barometer scale?
- To indicate the current weather (correct)
- To calibrate the barometer
- Decoration
- To show the boiling point of mercury
What is the function of the figure on a barometer scale?
What is the function of the figure on a barometer scale?
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What happens to the mercury in a barometer when atmospheric pressure increases?
What happens to the mercury in a barometer when atmospheric pressure increases?
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Why is mercury commonly used in barometers?
Why is mercury commonly used in barometers?
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Study Notes
Barometer Basics
- The typical liquid used in a barometer is mercury.
- A barometer measures atmospheric pressure.
Barometer Scale
- The figure on a barometer scale indicates the level of atmospheric pressure.
- The purpose of the figure on a barometer scale is to provide a visual representation of the pressure reading.
Mercury's Behavior
- When atmospheric pressure increases, the mercury in a barometer rises.
- Mercury is commonly used in barometers because it is a dense liquid with a low vapour pressure, making it an ideal material for measuring pressure changes.
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