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Key Terms - Ch 1
Key terms for Ch 1
21
Geography
Undergraduate 2
02/25/2014

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Term
Atmosphere
Definition
Gaseous envelope around Earth
Term
climatology
Definition
study of the climate
Term
meteorology
Definition
study of the atmosphere and weather
Term
biogeography
Definition
study of distribution of living things
Term
geomorphology
Definition
study of characteristics, origin and development of landforms
Term
hydrology
Definition
study of water
Term
cryosphere
Definition
sub sphere of hydrosphere that addresses frozen water
Term
geography
Definition
study of physical features of earth and its atmosphere
Term
spatial variation
Definition
variation over a landscape
Term
perihelion
Definition
point in orbit when planet is nearest to the sun
Term
aphelion
Definition
point in orbit when planet is furthest from the sun
Term
insolation
Definition
incoming solar radiation
Term
angle of incidence (solar elevation)
Definition
angle of sun rays hitting the planet surface
Term
23.5 degrees
Definition
inclination (angle btwn axis of rotation and perpendicular line to plane of ecliptic)
Term
polarity (parallelism)
Definition
Earth's axis always points toward North Star at every position of orbit
Term
solstice
Definition
June 21 and Dec 21
Term
tropics
Definition
Cancer and Capricorn (23.5 degrees N and S)
Term
polar circles
Definition
Arctic and Antarctic (66.5 degrees N and S)
Term
equinox
Definition
March 22 and Sept 22
Term
intensity of received insolation
Definition
dependent on sun angle and duration of insolation
Term
depletion
Definition
(ozone depletion) disappearance of ozone due to CFCs (chlorofluorocarbon)
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