ATMO 170A1 Lecture Notes - Lecture 5: Heat Transfer, Latent Heat, Advection
26 Jan 2017
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Document Summary
Water boiling temperature on top of mt. everest: higher than 212(f, 212(f, lower than 212 (f) Advection is movement of mass in what direction. Heat transfer: molecule (mass) energy transfer causing changes in temperature and dimension. Kinetic energy: the energy required for atoms and molecules to move around (cold air- slower atom speed) ( hot air- faster atom speed) Conduction: heat transfer from molecule to molecule within a substance (air, glass jar, metal pot) Warm molecules vibrate more than cold molecules. Vibration is transferred from warm to cold molecules. Heat conductivity: amount of heat needed for 1 gram of material to warm by 1 degree (air is a poor conductor) Vertical heat exchange of mass, occurs in fluids (liquids, air) A boiling pot of water exemplifies all modes of heat transfer. A liquid boils, or begins turning to vapor, when its internal vapor pressure equals the atmospheric pressure.
