Weather and Atmospheric Concepts

Front

Low Pressure Systems

Back

Bring wet, warm, cloudy weather. Winds move inward and counterclockwise (cyclone). Lower air pressure leads to storms and precipitation.

Front

High Pressure Systems

Back

Bring dry, cool, and nice blue skies. Winds move outward and clockwise. High air pressure results in clear skies.

Front

Present Weather Symbols

Back

If the temperature is above 32 degrees, expect rain. If below 32 degrees, expect snow.

Front

Altitude

Back

Determines how high above the earth's surface you are. It helps determine the atmospheric layer.

Front

Relative Humidity

Back

Indicates how much water the air can hold.

Front

Wind Vane

Back

Shows wind direction.

Front

Thermometer

Back

Shows temperature.

Front

Barometer

Back

Shows air pressure.

Front

Psychrometer

Back

Shows relative humidity.

Front

Air Masses

Back

Determined by geographic origin. Types include mT (Maritime Tropical), mP (Maritime Polar), cT (Continental Tropical), cP (Continental Polar).