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Mid-term definitions
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7
Geography
10th Grade
01/25/2009

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Cards

Term
Weather
Definition
combination of temperature, precipitation, cloud cover, and wind experienced daily
Term
Temperature
Definition
measured in °C with a thermometer. Consider forecasted low and high, present value, and expected changes
Term
Precipitation
Definition
measured in mm (rain) or cm (snow) using a rain gauge. Consider the amount predicted, the amount received, and the type
Term
Cloud cover
Definition
measured in tenths of the sky using a human eye. Consider degree, type, and changes
Term
Relative humidity
Definition
The air can hold water vapour until saturation point (precipitation); warmer air can hold more vapour than cold air. Relative humidity compares the amount of water vapour in the air with the total amount the air can hold. It is measured in a percentage with a hygrometer.
Term
Wind
Definition
horizontal movement of air over Earth’s surface, caused by differences in air pressure. It is measured in km/h (velocity) with an anemometer and with a compass point using a vane. Consider strength, cooling effects, and predicted shifts.
Term
Atmospheric pressure
Definition
measured in kilopascals per hour (kPa) using a barometer. Consider the value, direction, and the rate of change.
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