GES 2613 STUDY GUIDE EXAM 2026
COMPLETE QUESTIONS WITH SOLUTIONS
GRADED A+
◉Autumnal Equinox. Answer: September 22
all locations on Earth have 12 hours of daylight and 12 hours of
night
subsolar point = 0 degrees (equator)
◉air. Answer: simple mixture of gases that is naturally odorless,
colorless, tasteless and formless, blended so thoroughly that it
behaves as a single gas
◉exosphere. Answer: beyond the atmosphere - "outer sphere"
less dense atmosphere that is nearly a vacuum, weakly bounded by
gravity as far as 32,000 km from Earth
◉air pressure. Answer: 1 kg/cm^2 at sea level
◉homosphere
heterosphere. Answer: two major levels of atmosphere
, ◉homosphere. Answer: exists from surface to 80 km altitude
gases well mixed - only exception is ozone concentration
"Ozone layer" is located from 19-50km - vast reservoir of nitrogen
◉heterosphere. Answer: exists from 80-489 km altitude
lighter gases, not evenly mixed
makes up less than 0.001% of the atmosphere's mass
◉nitrogen - volcanic activity (78%)
oxygen - photosynthesis (21%)
argon - radioactive decay of potassium (0.9%)
carbon dioxide - natural life by-product (0.0393%). Answer: major
gases of the atmosphere
◉Thermosphere (thermopause). Answer: 50-80 km
temperature decreases with height
coldest portion of atmosphere
noctilucent clouds
◉noctilucent clouds. Answer: bands of ice crystals so high in altitude
they can still catch sunlight after sun has set
COMPLETE QUESTIONS WITH SOLUTIONS
GRADED A+
◉Autumnal Equinox. Answer: September 22
all locations on Earth have 12 hours of daylight and 12 hours of
night
subsolar point = 0 degrees (equator)
◉air. Answer: simple mixture of gases that is naturally odorless,
colorless, tasteless and formless, blended so thoroughly that it
behaves as a single gas
◉exosphere. Answer: beyond the atmosphere - "outer sphere"
less dense atmosphere that is nearly a vacuum, weakly bounded by
gravity as far as 32,000 km from Earth
◉air pressure. Answer: 1 kg/cm^2 at sea level
◉homosphere
heterosphere. Answer: two major levels of atmosphere
, ◉homosphere. Answer: exists from surface to 80 km altitude
gases well mixed - only exception is ozone concentration
"Ozone layer" is located from 19-50km - vast reservoir of nitrogen
◉heterosphere. Answer: exists from 80-489 km altitude
lighter gases, not evenly mixed
makes up less than 0.001% of the atmosphere's mass
◉nitrogen - volcanic activity (78%)
oxygen - photosynthesis (21%)
argon - radioactive decay of potassium (0.9%)
carbon dioxide - natural life by-product (0.0393%). Answer: major
gases of the atmosphere
◉Thermosphere (thermopause). Answer: 50-80 km
temperature decreases with height
coldest portion of atmosphere
noctilucent clouds
◉noctilucent clouds. Answer: bands of ice crystals so high in altitude
they can still catch sunlight after sun has set
