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Flashcards - Geography & Weather

Flashcards - Geography & Weather
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polar front
In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere
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fronts
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena
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troposphere
The troposphere is the lowest portion of Earth's atmosphere, and is also where all weather takes place
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thermosphere
The thermosphere is the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere
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stratosphere
The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere
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ionosphere
The ionosphere is a region of Earth's upper atmosphere, from about 60 km to 1,000 km altitude, and includes the thermosphere and parts of the mesosphere and exosphere
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electromagnetic spectrum
The electromagnetic spectrum is the collective term for all known frequencies and their linked wavelengths of the known photons
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Humidity
Humidity is the amount of water vapor in the air
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Clouds
In meteorology, a cloud is an aerosol comprising a visible mass of minute liquid droplets or frozen crystals, both of which are made of water or various chemicals
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Clouds
In meteorology, a cloud is an aerosol comprising a visible mass of minute liquid droplets or frozen crystals, both of which are made of water or various chemicals
Humidity
Humidity is the amount of water vapor in the air
electromagnetic spectrum
The electromagnetic spectrum is the collective term for all known frequencies and their linked wavelengths of the known photons
ionosphere
The ionosphere is a region of Earth's upper atmosphere, from about 60 km to 1,000 km altitude, and includes the thermosphere and parts of the mesosphere and exosphere
stratosphere
The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere
thermosphere
The thermosphere is the layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere
troposphere
The troposphere is the lowest portion of Earth's atmosphere, and is also where all weather takes place
fronts
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena
polar front
In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere
westerlies
The Westerlies, anti-trades, or Prevailing Westerlies, are prevailing winds from the west toward the east in the middle latitudes between 30 and 60 degrees latitude
pressure gradient force
The pressure-gradient force is the force which results when there is a difference in pressure across a surface
Orographic lifting
Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain
isobar
Isobars are atoms of different chemical elements that have the same number of nucleons
cold front
A cold front is defined as the leading edge of a cooler mass of air, replacing at ground level a warmer mass of air, which lies within a fairly sharp surface trough of low pressure
occluded front
An occluded front is formed during the process of cyclogenesis when a cold front overtakes a warm front
stationary front
A stationary front is a pair of air masses, neither of which is strong enough to replace the other
winter solstice
Winter solstice is an astronomical phenomenon marking the shortest day and the longest night of the year
solstice
A solstice is an astronomical event that occurs twice each year as the Sun reaches its highest or lowest excursion relative to the celestial equator on the celestial sphere
ENSO cycle
El Niño–Southern Oscillation is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting much of the tropics and subtropics

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