Measuring Weather to Understand Atmospheric Conditions (Leaving Cert Geography): Flashcards

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Measuring Weather to Understand Atmospheric Conditions
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4 basic elements of weather

Temperature, pressure, humidity, wind

Primary instrument for temperature measurement

Thermometer

What mercury barometers measure

Atmospheric pressure

Type of barometer without liquid, portable

Aneroid barometer

Weather indication of falling atmospheric pressure

Approaching storm system

Weather indication of rising atmospheric pressure

Fair weather conditions

What relative humidity measures

Amount of moisture in air compared to max air can hold at that temp

Instrument that measures relative humidity

Hygrometer

Weather result of high relative humidity

Cloud formation and precipitation

Weather result of low relative humidity

Sunny and clear weather

Instrument that measures wind speed

Anemometer

Instrument that measures wind direction

Wind vane

Definition of wind shear

Rapid changes in wind direction or speed

3 methods for measuring climate

Long-term temp records, ice core analysis, ocean monitoring

Years needed to establish climate data patterns

30 years or more

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