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The diagrams show two mercury barometers standing side by side. The right-hand diagram shows a tube of bigger diameter, but the diagram is incomplete. There is a vacuum above the mercury in both tubes.
Which labelled position on the right-hand tube could show the mercury level in that tube?
The diagram shows a mercury barometer.
Which height is used as a measurement of atmospheric pressure?
A simple barometer includes a column of mercury.
Which property of this column of mercury is used to give a measurement of atmospheric pressure?
The diagram shows a simple mercury barometer.
Which length is used to find the value of atmospheric pressure?
The diagram shows a simple mercury barometer.
The atmospheric pressure increases.
Which distance increases?
The diagram shows a mercury barometer.
Which distance is used to calculate the pressure of the atmosphere?
The diagram shows two mercury barometers.
Barometer 1 is measuring atmospheric pressure on day 1 .
Barometer 2 is measuring atmospheric pressure on day 2.
Which statement is true?
What is a simple mercury barometer designed to measure?