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22 Cards in this Set
- Front
- Back
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aphelion
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the point at which the earth is farthest from the sun
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perihelion
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the point at which the earth is closest to the sun
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lines of longitude
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imaginary lines that run north and south across the earth
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lines of latitude
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imaginary lines that run east and west across the earth
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coriolis effect
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the way in which the rotation of the earth bends the path of winds, sea currents, and objects that fly through different latitudes
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air mass
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a large body of air with relatively uniform pressure, temperature, and humidity
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weather front
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a boundary between two air masses
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principal factors that influence weather
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thermal energy, uneven distribution of thermal energy, and water vapor in the atmosphere
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four basic types of clouds
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cumulus, stratus, cirrus, and lenticular
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cumulous clouds
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fluffy clouds that look like piles of cotton (Latin: “a pile”)
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cumulonimbus clouds
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“thunderclouds”
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cirrus clouds
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clouds that look feathery (Latin: “wisp” or “curl”)
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stratus clouds
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a flat layer of clouds relatively close to the ground (Latin: “layer”)
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nimbostratus clouds
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darker stratus clouds which produce rain or snow
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lenticular clouds
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usually oval-shaped clouds generally formed in mountainous regions (Latin: “lens-shaped”)
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summer solstice
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June 21 or 22, when the Northern Hemisphere becomes pointed directly at the sun and therefore has longer days
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winter solstice
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December 21 or 22, when the Southern Hemisphere become pointed directly at the sun and therefore has longer days
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spring equinox
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March 20 or 21, when neither hemisphere is tilted towards the sun
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autumnal equinox
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September 22 or 23, when neither hemisphere is tilted towards the sun
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prime meridian
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the reference line of longitude, an imaginary line, that runs through Greenwich (gren’ itch), England
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equator
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the imaginary line that runs directly between the Northern and Southern hemispheres of the earth
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four basic types of weather fronts
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cold fronts, warm fronts, stationary fronts, and occluded fronts
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