Question

What causes the air pressure dial to move in an aneroid barometer?
Mercury inside the barometer rises and falls moving the dial according to the increase or decrease in pressure.
Weights activated by air pressure change position according to the weight of the air moving a dial on the instrument.
A spring inside the instrument, connected to a dial, moves when the air pressure contacts the spring.
A small flexible metal box expands and contracts which is connected to the instrument's dial.

Answer 1

Answer:

D. A small flexible metal box expands and contracts which is connected to the instrument's dial.

Explanation:

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