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Air Temperature & Pressure

Science, Grade 3

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Air Temperature & Pr essure Air Temperature Air temperature is how hot or cold the air is. Temperature is measured in degrees Celsius (ºC) or degrees Fahrenheit (ºF), using a thermometer. Air Pressure The air in the atmosphere is pulled toward the Earth’s surface by gravity. The weight of the air pushing down on the Earth’s surface is the air (barometric) pressure. aneroid barometer atmospheric pressure vacuum 760 mm (29.92 in.) mercury barometer © Copyright NewPath Learning. All Rights Reserved. 94-4360 Visit www.newpathlearning.com for Online Learning Resources. -40 -40 -30 -20 -10 0 10 20 30 40 50 -20 0 20 40 60 80 100 120 60 140 -40 -40 -30 -20 -10 0 10 20 30 40 50 -20 0 20 40 60 80 100 120 60 140 RAIN FAIR 29 30 31 28 INS Hg 1000 1010 10 20 10 30 10 40 105 0 9 70 98 0 990 9 6 0 95 0 940 930 Mb s aneroid barometer A barometer is a tool used to measure air pressure. atmospheric pressure

Pause & Review Read the thermometers and record the air temperatures. What is the air pressure shown on this mercury barometer? _______________ ºC _______________ ºF Is it hot or cold? _________________ _______________ ºC _______________ ºF Is it hot or cold? _________________ ________________ mm Air Temperature & Pr essure © Copyright NewPath Learning. All Rights Reserved. 94-4360 Visit www.newpathlearning.com for Online Learning Resources. 760 mm 380 mm 570 mm 190 mm -40 -40 -30 -20 -10 0 10 20 30 40 50 -20 0 20 40 60 80 100 120 60 140 -40 -40 -30 -20 -10 0 10 20 30 40 50 -20 0 20 40 60 80 100 120 60 140

Air Temperature & Pressure

Science, Grade 3

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