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18 Cards in this Set
- Front
- Back
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continuous spectrum
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light from hot, dense object passes through prism
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emission spectrum
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light from low density cloud passes through prism
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absorption spectrum
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light from hot, dense energy source passes through low density cloud
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pressure gradient force
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change in pressure across a given distance
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Hadley Cell
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closest to the equator, winds converging and rising at the equator
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trade winds
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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
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astronomical unit
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distance between Earth and the sun, about 150 million km
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parsec
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unit of measurement used to describe distances between celestial objects
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cepheid variable
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young star whose luminosity changes periodically
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white dwarfs
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remnant of a giant star that has lost its outer atmosphere; glowing stellar core
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supernova
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brilliant burst of light that follows the collapse of the iron core of a massive star
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pulsar
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distance neutron star that emits rapid pulses of light and radio waves instead of steady radiation
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neutron star
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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
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black hole
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final life stage of an extremely massive star, with a gravitational field so intense that not even light can escape
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right ascension
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longitude on celestial maps, hours
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declination
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latitude on a celestial map, degrees
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gnomonic projection
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flat sheet of paper placed on map, distorts landmass shapes away from center point
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mercator projection
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shows true direction in straight lines but distorta distance near the poles, cylinder shape
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