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18 Cards in this Set

  • Front
  • Back
continuous spectrum
light from hot, dense object passes through prism
emission spectrum
light from low density cloud passes through prism
absorption spectrum
light from hot, dense energy source passes through low density cloud
pressure gradient force
change in pressure across a given distance
Hadley Cell
closest to the equator, winds converging and rising at the equator
trade winds
wind moving towards the equator from the northeast and southeast that tend to have fairly consistent speed and direction, coriolis effect makes winds appear to turn west
astronomical unit
distance between Earth and the sun, about 150 million km
unit of measurement used to describe distances between celestial objects
cepheid variable
young star whose luminosity changes periodically
white dwarfs
remnant of a giant star that has lost its outer atmosphere; glowing stellar core
brilliant burst of light that follows the collapse of the iron core of a massive star
distance neutron star that emits rapid pulses of light and radio waves instead of steady radiation
neutron star
super dense remains of a massive star that collapses with enough force to push all of its electrons into the nuclei they orbit, resulting in a mass of neutrons
black hole
final life stage of an extremely massive star, with a gravitational field so intense that not even light can escape
right ascension
longitude on celestial maps, hours
latitude on a celestial map, degrees
gnomonic projection
flat sheet of paper placed on map, distorts landmass shapes away from center point
mercator projection
shows true direction in straight lines but distorta distance near the poles, cylinder shape