18-1 Air Pressure and Wind

The pressure exerted by the weight of air above.

• Air pressure

• Mercury barometer

• Aneroid barometer

• Barograph

• Isobars

A device used to measure air pressure that uses a partially evacuated.

• Air pressure

• Mercury barometer

• Aneroid barometer

• Barograph

• Isobars

An instrument that provides a continuous record of pressure changes with the passage of time.

• Air pressure

• Mercury barometer

• Aneroid barometer

• Barograph

• Isobars

Lines on a map that connect places of equal air pressure.

• Air pressure

• Mercury barometer

• Aneroid barometer

• Barograph

• Isobars

When air moves horizontally.

• Wind

• Pressure gradient

• coriolis effect

• Geostrophic winds

• Jet Stream

The spacing of isobars indicates the amount of pressure change occurring over a given distance and is expressed as the:

• Wind

• Pressure gradient

• coriolis effect

• Geostrophic winds

• Jet Stream

States that all free-moving objects or fluids are deflected by the Earth’s rotation.

• Wind

• Pressure gradient

• coriolis effect

• Geostrophic winds

• Jet Stream

Upper-air winds that blow parallel to the isobars.

• Wind

• Pressure gradient

• coriolis effect

• Geostrophic winds

• Jet Stream

Which of these are standard air pressure measurements at sea level?

• 998.3 millibars

• 29.92 inches of mercury

• 14.7 pounds per square inch

• 1 kilogram per square centimeter

• 1 atmosphere

Which units of air pressure will you see in weather reports in the US?

• Millibars

• Inches of mercury

• Pounds per square inch

• Atmospheres