7th grade air pressure and weather flashcard

Front

What is air pressure?

Back

Air pressure is the force exerted by the weight of air above a given point, typically measured in millibars or inches of mercury.

Front

What is the relationship between air pressure and weather?

Back

Air pressure influences weather patterns; high pressure generally leads to clear, dry weather, while low pressure is associated with cloudy, wet conditions.

Front

What is a cold front?

Back

A cold front is the leading edge of a cooler mass of air that replaces a warmer mass, often resulting in precipitation and a drop in temperature.

Front

What is a warm front?

Back

A warm front is the leading edge of a warmer mass of air that replaces a cooler mass, typically bringing gradual increases in temperature and prolonged precipitation.

Front

What type of weather is associated with high pressure systems?

Back

High pressure systems are associated with dry, clear weather because they inhibit the formation of clouds and precipitation.

Front

What type of weather is associated with low pressure systems?

Back

Low pressure systems are associated with humid, cloudy weather and precipitation, as they allow air to rise and cool, leading to condensation.

Front

How does air pressure change with altitude?

Back

Air pressure decreases with altitude; as you go higher in the atmosphere, there is less air above you, resulting in lower pressure.

Front

What is the significance of the pressure value 1006 hPa?

Back

A pressure value of 1006 hPa indicates a relatively low pressure system, which can be associated with unsettled weather conditions.

Front

What direction do cold fronts typically move?

Back

Cold fronts typically move southeast.

Front

What direction do warm fronts typically move?

Back

Warm fronts typically move northwest.