The Barometer

Define a barometer and state its primary function in physics and meteorology.

Based on the description of a mercury barometer, what occupies the space at the top of the sealed tube above the mercury column?

At sea level, a mercury barometer typically shows a column height of approximately 30 inches. What is this same height expressed in centimeters?

In a mercury barometer, what force or phenomenon keeps the mercury from simply draining completely out of the inverted tube?

It is stated that 'the pressure at point A must equal the pressure at point B because the points are at the same level.' In a mercury barometer, pressure at point A (inside the tube at the level of the mercury pool) equals what?

The density of mercury is 13,600 kg/m³, so its weight density is 133,000 N/m³. Using the formula pressure = depth × weight density, calculate the pressure exerted by a 76 cm (0.76 m) column of mercury. Select the correct value.

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.

Arrange the following events in the correct order to explain how a mercury barometer works. Place the first event at the top, the last event at the bottom.

A weather report on TV says, 'The pressure today is 29.8 inches.' Is this statement technically correct? Explain why or why not.

A weather map shows a pressure system with a reading of 30 inches of mercury. What is this pressure expressed in millimeters of mercury (mm Hg)? (Note: 1 inch = 25.4 mm)

A barometer is taken to a location where the atmospheric pressure is measured as 15 lb/in². The weight density of mercury is 0.49 lb/in³. What height of mercury column (in inches) would this atmospheric pressure support? (Use the formula: pressure = depth × weight density)

Which of the following descriptions correctly describes an aneroid barometer?

Classify each statement below as either 'True' or 'False.'

Classify each statement below as either 'True' or 'False.'

In a mercury barometer at sea level, what would happen if you replaced the 1-meter tube with a 2-meter tube (both sealed at the top and inverted into the same mercury pool)?

Read the following passage and identify the TWO words that describe why aneroid barometers are preferred over mercury barometers for many applications: 'Compact barometers have an airtight container with a flexible end. As atmospheric pressure increases, this flexible end is pushed inward and a lever connected to it moves a pointer on a dial on the face of the barometer. Because of the common use of the mercury barometer, such dials are normally calibrated in inches or centimeters of mercury even though they contain no mercury.'