MET 1010: Chapter Three – Flashcards
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A radiation inversion is most commonly observed:
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just above the ground.
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Although the polar regions radiate away more heat energy than they receive by insolation in the course of a year, they are prevented from becoming progressively colder each year by:
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the circulation of heat by the atmosphere and the oceans.
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An important reason for the large daily temperature range over deserts is that:
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there is little water vapor in the air to absorb and re-radiate infrared radiation.
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At the North Pole the sun will rise above the horizon on ______ and set below the horizon on ______.
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the vernal equinox (March 20), the autumnal equinox (September 22)
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At what time during a 24-hour day would a radiation temperature inversion best be developed?
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At sunrise.
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Considering each hemisphere as a whole, seasonal temperature variation in the Southern Hemisphere is ______ that in the Northern Hemisphere.
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opposite
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During an equinox,
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the sun is directly above the equator, and day and night are of equal length everywhere but the poles.
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During summer near the North Pole, the sun is above the horizon ______ in the mid-latitudes.
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on the vernal equinox (March 20)
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During the afternoon, the greatest temperature difference between the surface air and the air several meters above the ground occurs on a:
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clear, calm day.
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During the winter in the Northern Hemisphere, the "land of the midnight sun" would be found:
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in high latitudes.
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During the winter solstice in the Northern Hemisphere,
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the day is less than 12 hours long and is increasing with each passing day.
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Ideal conditions for a strong radiation inversion are:
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calm air, long night, and dry, dust-free air.
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In July, at middle latitudes in the Northern Hemisphere,
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the day is more than 12 hours long and is decreasing with each passing day.
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In clear weather, the air next to the ground is usually ______ than the air above during the night and ______ than the air above during the day.
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cooler, warmer
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In meteorology, the word insolation refers to:
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incoming solar radiation.
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In most areas, the warmest time of the day about 5 feet above the ground occurs:
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in the afternoon around 2-5 PM local time.
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In summer, humid regions typically have ______ daily temperature ranges and ______ maximum temperatures than drier regions.
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smaller, lower
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In the Northern Hemisphere, which of the following days has the fewest hours of daylight?
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Winter solstice (December 21).
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In the Northern Hemisphere, the number of hours of daylight begins to shorten after the:
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summer solstice.
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Incoming solar radiation in middle latitudes is less in winter than in summer because of:
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the tilt of the earth on its axis.
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Lines connecting points of equal temperature are called:
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isotherms.
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Longer days are generally associated with:
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warmer weather.
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More solar radiation is received:
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at the top of the atmosphere.
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On a clear, calm night, the ground and air above cool mainly by which process?
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Radiation.
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On the summer solstice, the altitude of the noonday sun is highest:
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above the middle latitudes.
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Over the earth as a whole, one would expect to observe the smallest variation in temperature from day to day and from month to month:
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on a small island near the equator.
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Radiational cooling typically occurs:
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at night (once the sun sets and the amount of outgoing energy is greater than incoming energy).
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Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35°F. The most likely reason for this apparent discrepancy is that:
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temperature reading are taken in instrument shelters more than 5 feet above the ground.
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The annual variation of the earth-sun distance is ______ to seasonal weather changes.
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irrelevant
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The deepest radiation inversion would be observed:
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in polar regions in winter.
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The earth is tilted at an angle of 23.5° with respect to the plane of its orbit around the sun. If the amount of tilt were increased to 40°, we would expect in middle latitudes:
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hotter summer and colder winter.
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The lag in daily temperature refers to the time lag between:
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time of maximum solar radiation and the time of maximum temperature.
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The largest annual ranges of temperature are found:
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at polar latitudes over land.
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The latitude at which there is a yearly balance between incoming and outgoing radiation is:
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about 37 degrees.
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The lowest temperature is usually observed:
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near sunrise.
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The main reason(s) for warm summers in middle latitudes is that:
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the sun is higher and the days are longer.
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The maximum in daytime surface temperatures typically occurs ______ the earth receives its most intense solar radiation.
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after
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The primary cause of radiation inversion is:
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infrared radiation emitted by the earth's surface.
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The sun is directly overhead at Mexico City (latitude 19°N):
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twice a year.
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The wind chill factor:
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relates body heat loss with wind to an equivalent temperature with no wind.
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Two objects, A and B, have the same mass but the specific heat of A is larger than B. If both objects absorb equal amounts of energy,
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B's temperature will rise faster than A's.
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Water heats up ______ and cools of ______ than land.
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more slowly, more slowly
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When it is January and winter in the Northern Hemisphere, it is ______ and ______ in the Southern Hemisphere.
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January, summer
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Where are the days and nights of equal length all year long?
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The equator.
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Which latitude below would experience the fewest hours of daylight on Dec. 22?
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60°N (high latitudes).
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Which of the following can be used as a method of protecting an orchard from damaging low temperatures during a radiation inversion?
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Orchard heaters, wind machines, and irrigation (all of the above).
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Which of the following is NOT a reason why water warms and cools much more slowly than land?
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It takes more heat to raise the temperature of a given amount of soil 1°C than it does to raise the temperature of water 1°C.