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Unformatted text preview: Chapter Five: Global Temperatures • Temperature Concepts and Measurements o Heat – a form of energy that flows from one system or object to another because the two are at different temperatures. o Temperature – measure of the average kinetic energy of individual molecules in matter. Feel the effects as sensible heat transfer from warmer objects to cooler objects. o Temperature and heat are related because changes in temperature are caused by the absorption or emission of heat energy. o Heat Energy – frequently used to describe energy that is added to or removed from a system or substance. • Temperature Scales o Absolute Zero – temperature at which all atomic and molecular motion in matter completely stops. -273°C -459.4°F 0 Kelvin o Fahrenheit Melting Point - 32°F Boiling Point - 212°F o Celsius Melting Point – 0°C Boiling Point - 100°C o Kelvin Melting Point – 273 K Boiling Point – 373 K • Measuring Temperature o Mercury Thermometer/Alcohol Thermometer – sealed glass type that measures outdoor temperatures. When fluids are heated, they expand, upon cooling, they contract. o Mercury Minimum/Maximum Thermometer Stores readings of the day’s highest and lowest temperatures until reset....
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This note was uploaded on 04/18/2008 for the course GEOG 101 taught by Professor Thebpanya during the Fall '07 term at Towson.
- Fall '07