GEOG 201 Chapter Notes - Chapter 3: Convection Oven, Sensible Heat, Ultraviolet
18 Apr 2018
School
Department
Course
Professor
Document Summary
Latent heat: the energy gained or lost when a substance changes from one state to another, such as from water vapor to liquid water. [different from sensible bc as long as a physical change in state is taking place, the substance itself does not change temperature, the surroundings do] Methods of heat transfer: radiation: the transfer of heat in electromagnetic waves, such as that from the sun to. [temperature of the object or substavlnce determines the wavelength of radiation it emits - hotter the object, the shorter the wavelengths it emits: conduction: molecule-to-molecule transfer of heat energy as it diffuses through a substance. [as molecules warm, their vibration increases: convection: the transfer of heat by mixing or circulation, gases and liquid. Example: convection oven, in which a fan circulates heated air. Scattering and diffuse radiation: scattering: gases, dust, water vapor etc in the atmosphere change direction of insolation without alternating its wavelength.
