02energy.big

02energy.big - Ch 2 Energy in the Atmosphere Heat Energy...

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1 Ch. 2: Energy in the Atmosphere Heat, Energy, Temperature Definitions, Temperature Scales Latent Heat Heat Transfer Conduction, Convection, Radiation Sensible Heat and Convection Electromagnetic Radiation (EMR) Ultraviolet, Visible, Infrared Blackbodies, Radiative Equilibrium
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2 Lecture Topics, cont. Sunlight vs. Earth and Atmosphere Selective Absorption and the Atmospheric Greenhouse Effect Carbon Dioxide Pollution and Global Warming Energy Balance Energy Flows, In and Out Radiative Balance + Sensible/Latent Heat Latitudinal Energy Balance and Weather
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3 Heat and Temperature Kinetic Energy = energy of motion Higher speed Higher KE Heat Temperature Cumulative total KE of all molecules in a substance Proportional to average KE of individual molecules in a substance
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4 Temperature Scales Fahrenheit °F Celsius °C Kelvin K –459°F 32°F 68°F 212°F –273°C 0°C 20°C 100°C 0 K 273 K 293 K 373 K Absolute Zero Water Freezes Room Temperature Water Boils
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5 Temperature Conversion K = C + 273 C = (F – 32) F = C + 32 5 9 9 5
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6 Latent Heat of Phase Change Heat is released/absorbed during phase changes while temperature remains constant Latent heat absorbed Latent heat released Melting Evaporation Freezing Condensation Water Vapor Ice
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