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38 Cards in this Set
- Front
- Back
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Milky Way Galaxy
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*spiral Shaped
*belongs to a small cluster of galaxies "local Group" |
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Solar eclipse
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The sun is blocked because the moon's shadow falls upon the earth.
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Nebula
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*Where the star formation occurs.
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Apparent magnitude
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*how bright the star appear to be from earth.
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Vernal equinox and Autumnal equinox
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equal days and equal nights
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What substance does earth atmosphere contain?
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Nitrogen and oxygen
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What is condensation nuclei
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*particles of the atmospheric dust around which cloud droplets form
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Dew point
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The temperature at which air must be cooled at a constant pressure to reach saturation
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Ozone
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Gas formed by adding a third oxygen atom to an oxygen molecule.
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Latent Heat
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Heat that is stored in a substance
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Radiation
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The transfer of energy through space by electromagnetic waves
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Coalescence
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cloud droplets that collide and form bigger droplets
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What determines the amount of energy that is absorbed in the atmosphere?
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Carbon dioxide
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Conduction
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A method of heat transfer
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Weather
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short-term variation in the atmosphere
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Isopleths
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Lines on a map that connect points of equal or contant values.
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Polar easterlies
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systems that lie between the poles about 60 degrees latitude
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Prevailing westerlies
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winds that flow between 30 and 60 degrees latitude.
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Occluded front
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A warm air mass is squeezed upward between two cold air masses.
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Hygrometer
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Measures relative humidity
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Thermometer
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Measures temperature
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Anemometer
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Measures wind speed
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barometer
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measures air pressure
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hygrometer
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measures height of cloud layers and estimates percentage of sky covered by clouds
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Air mass thunderstorm
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Forms because of unequal heating of earth's surface.
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Tornadoes
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associated with very severe thunderstorms called supercells
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Storm surge
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A mound of water driven toward the coast
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Mountain thunderstorm
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forms when an air mass rises from orographic lifting
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What is the result of updrafts and downdrafts that characterize severe thunderstorms?
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*unstable air
*temperature differences between upper and lower parts of the storm |
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Tropical storm
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*3rd stage of a hurricane
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What is dissipation?
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The stage of a thunderstorm where air moves downward.
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Eyewall
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Strongest winds of a hurricane.
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Why does hail form?
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hail forms from super cooled water droplets
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What crust is formed at oceanic-oceanic convergent boundary?
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old crust is recyled by subduction
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What made mapmakers think that the earth's continents had moved?
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matching coastlines
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What causes tall mountain ranges?
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continental-containetal plate collisions
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What causes convergent boundaries?
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slab pull
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What is a deep-sea trench?
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Narrow, elongated depression of the seafloor.
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