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What is a high level, rounded cloud?


A) cirrus
B) cirrocumulus
C) cirrostratus
D) cirrocirrus

E) B) and C)
F) A) and B)

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________________ are minute particles in the atmosphere that provide a surface upon which condensation can take place.

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________________ stratus clouds are considered middle-level clouds.

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Dividing the number of rain days in a year by the total number of days in a year yields the ____.


A) probability of rainfall
B) rain ratio
C) rain deficit
D) rain distribution

E) A) and D)
F) All of the above

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________________ is condensation that takes place on chemical nuclei and is often corrosive and dangerous to human health.

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The higher the relative humidity, the lower the percentage of water in the air.

A) True
B) False

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Cloud names generally consist of two parts: the ________________ and the shape.

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The term nimbus, when used in describing clouds, refers to ____.


A) precipitation
B) ice crystals
C) highest
D) lightning and thunder

E) A) and B)
F) B) and C)

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________________ is a measure of the weight of water vapor (grams) in a particular volume of air (cubic meter).

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The phrase "rain shadow" is associated with which of the following types of precipitation?


A) convectional
B) orographic
C) cyclonic
D) frontal

E) All of the above
F) A) and D)

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________________ is by far the most common form of precipitation.

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Two important factors affect geographic variations in relative humidity: temperature and ____.


A) wet adiabatic lapse rate
B) potential evapotranspiration
C) dew point temperature
D) moisture availability

E) A) and B)
F) A) and C)

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What cloud type is typically formed by strong convection currents?


A) cirrus
B) lenticular
C) stratus
D) cumulonimbus

E) A) and D)
F) B) and D)

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________________ uplift involves the solar heating of Earth's surface.

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Convection...

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The Midwest's winter precipitation is chiefly attributable to ____.


A) the interaction of contrasting air masses
B) orographic factors
C) friction of the air with rough surfaces
D) sun control of air temperature

E) A) and B)
F) B) and D)

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Drizzle is rainfall with a drop size of 0.5mm diameter or less.

A) True
B) False

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The total amount of atmospheric water remains nearly constant.

A) True
B) False

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If an air parcel is warmer than the air at the specified altitude, then the parcel will continue to rise, because warmer air is less dense and therefore buoyant.This condition best describes ____.


A) stability
B) neutrality
C) precipitation
D) instability

E) B) and D)
F) B) and C)

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Fogs "burn off" from the ground up.

A) True
B) False

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If an unsaturated parcel of air is cooled, it will eventually reach a temperature where the air will become saturated.This temperature is known as the ____.


A) environmental load
B) dew point
C) lifting condensation level
D) adiabatic rate

E) A) and B)
F) A) and C)

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