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Explain why highest summer temperatures usually occur over desert regions as opposed to humid areas with more vegetation.

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The highest summer temperatures usually ...

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Why does the warmest weather in middle latitudes normally occur several weeks after the summer solstice?

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The warmest weather in middle latitudes ...

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Assume that the night will remain clear, calm, and unsaturated, and the predicted minimum temperature is 0°C. Suddenly the wind speed increases and remains gusty throughout the night. What would be the most likely minimum temperature?


A) higher than predicted due to mixing
B) much lower than predicted due to radiational cooling
C) about the same as predicted, but occurring earlier in the night
D) higher than predicted due to the release of latent heat

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Suppose the temperature at night is going to drop to -5°C, and a fairly stiff wind is predicted. Assuming that cost is not a factor, which of the following methods is probably the best way to protect an orchard against a hard freeze?


A) Use helicopters.
B) Use wind machines.
C) Put orchard heaters to work.
D) Sprinkle the crops with water.

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Referring to the diagram, sunlight energy is added at equal rates to soil and water. Which of the following factors contributes to the different temperatures of the two surfaces? Referring to the diagram, sunlight energy is added at equal rates to soil and water. Which of the following factors contributes to the different temperatures of the two surfaces?   A) angle of the sun on the horizon B) heat capacity C) composition of the overlying atmosphere D) time of the year


A) angle of the sun on the horizon
B) heat capacity
C) composition of the overlying atmosphere
D) time of the year

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Describe the seasons that you would experience at two widely different locations on Earth. How might seasonal variations affect a region's culture and traditions?

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In a location near the equator, such as ...

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Suppose the air temperature is -5°C, the wind is blowing at 55 km/h, and the wind chill temperature is -15.3°C. Which of the following temperatures and wind speeds are equivalent to these conditions?


A) a -10°C air temperature and 10 km/h wind
B) a 0°C air temperature and 45 km/h wind
C) a 10°C air temperature and 60 km/h wind
D) a 5°C air temperature and 60 km/h wind

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In meteorology, which of the following defines "insolation"?


A) a well-constructed, energy-efficient home
B) the solar constant
C) incoming solar radiation
D) an increase in solar output

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At which of the following locations are the days and nights of equal length all year long?


A) at latitude 66.5°
B) at latitude 23.5°
C) at the equator
D) at latitude 44.5°

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In which of the following circumstances is a radiation inversion most commonly observed?


A) in the upper atmosphere
B) during the afternoon
C) just above the ground
D) at sunset

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During which of the following months does Indian summer most likely occur?


A) August
B) June
C) October
D) December

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In the Northern Hemisphere, which of the following days has the fewest hours of daylight?


A) autumnal equinox
B) summer solstice
C) winter solstice
D) vernal equinox

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At Lima, Peru (latitude 12°S) , on which of the following days is the sun overhead?


A) March 10
B) February 4
C) August 15
D) December 22

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Suppose the minimum temperature reported in the newspaper is 2°C, but you notice ice crystals (frost) on the grass in the morning. Which of the following describes the most likely reason for this apparent discrepancy?


A) Temperature readings were taken in shelters more than 1.5 metres above the ground.
B) The newspaper reported the wrong temperature.
C) The thermometer was read before the minimum temperature was reached for that day.
D) The thermometer was in error.

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Under which of the following conditions do the strongest radiation inversions occur?


A) clear skies
B) precipitation
C) partly cloudy skies
D) overcast skies

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Consider the scenario in which peas are planted in Ontario on May 1. If the peas need 1200 growing degree-days before they can be picked, and if the mean temperature for each day from May to July is 21°C, in about how many days will the peas be ready to pick? (Assume a base temperature of 4°C) .


A) 70
B) 30
C) 120
D) 40

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