An aneroid barometer works on the principle that
Answer: a small closed cell with most of its air removed will expand and contract with changes in air pressure
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MET1010
- Which of the statements below is NOT correct concerning the pressure gradient force?
- The amount of pressure change that occurs over a given horizontal distance is called the:
- The net force on air moving in a circle at constant speed is
- Which of the following forces CANNOT act to change the speed of the wind?
- Which of the following can influence wind direction?
- Which of the following forces does not have a direct effect on horizontal wind motions?
- The "force exerted on an object equals its mass times the acceleration produced" is a description of:
- The fundamental laws of motion were formulated by:
- Why is there a minus sign in the hydrostatic equation? (The hydrostatic equation is.)
- The hydrostatic equation describes the equilibrium between the:
- The Coriolis force is the force that causes the wind to blow.
- During a reversible adiabatic process, the pressure gradient force is parallel to the isobars
- Newton's first law states that "an object at rest ___ as long as no force is exerted on the object."
- On an isobaric weather chart, the spacing of the height contours indicates the magnitude of the pressure gradient force.
- A ridge on an upper-level isobaric chart indicates
- On an upper-level chart the wind tends to blow
- A surface low pressure center is generally associated with ___ on an upper level isobaric chart.
- On an upper-level chart, normally we find warm air associated with ___ pressure, and cold air associated with __ pressure.
- Warm air aloft is associated with constant pressure surfaces that are found at ___ altitude than normal and ___ than normal atmospheric pressure aloft.
- If an airplane flies from standard temperature air into warmer than standard temperature air, without making any correction, the altimeter in the warmer air would indicate an altitude:
- The contour lines drawn on a 500 mb chart are lines of constant:
- On a 500 millibar chart, ___ are drawn to represent horizontal changes in altitude which correspond to horizontal changes in pressure.
- Low ___ on a constant height chart corresponds to low ___ on a constant pressure chart.
- On an isobaric surface,
- Suppose you are a pilot who is flying from warm air into colder air. In the cold air, even though your altimeter is still indicating the same altitude as it did in the warm air, you would be flying: