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Interpreting barometer readings (Drag/Drop inplace)
publish date: 2026/05/19 19:27:56.905699 UTC
Complete the following sentence by dragging the correct word into the placeholder: A reading of 74 centimeters of mercury indicates (1) atmospheric pressure compared to a reading of 76 centimeters of mercury.
Please drag and drop the selected option in the right place or type it instead
higher
lower
the same
zero
Correct Answer
(1) lower
Explanation
If the mercury column is only 74 cm high, it means the atmospheric pressure is only able to support a shorter column of mercury. Therefore, the atmospheric pressure is lower than the standard 76 cm (or 30 inches) reading at sea level.
Reference
Basic Physics: A Self-Teaching Guide