Florida Science Grade 6

Chapter 10: The Atmosphere in Motion

Standardized Test Practice

1.
Which layer of Earth’s atmosphere contains the most clouds?

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SC.D.1.3.2
A)troposphere
B)thermosphere
C)ionosphere
D)stratosphere
2.
Solar radiation causes ions to continually form in Earth’s ionosphere. What is the greatest benefit of these ions?

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SC.D.1.3.2
A)They absorb ozone.
B)They filter out gamma rays.
C)They form rain clouds.
D)They reflect radio waves.
3.
The atmosphere is composed of 78% of which gas? SC.D.1.3.3
A)oxygen
B)carbon dioxide
C)nitrogen
D)water vapor
4.
Which of the following describes a cold front? SC.D.1.3.3
A)a front formed when warm air advances into a region of colder air
B)a front formed when a cold air mass advances and pushes under a warm air mass
C)a front formed when a warm air mass and a cold air mass meet but neither advances
D)a front formed when a fast-moving cold front overtakes a slower warm front
5.
During which month did Washington DC receive the least precipitation?

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SC.D.1.3.3
A)February
B)June
C)July
D)November
6.
What was the highest amount of monthly precipitation in Washington DC?

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SC.D.1.3.3
A)2.5 inches
B)4.25 inches
C)4 inches
D)5 inches
7.
What is the definition of humidity? SC.D.1.3.3
A)the amount of water vapor in the atmosphere
B)the temperature at which air is saturated and condensation occurs
C)the current condition of the atmosphere
D)the measure of the amount of water vapor that is present compared to the amount that could be held at a specific temperature
8.
What type of clouds produce a thunderstorm? SC.D.1.3.3
A)cirrostratus
B)cumulonimbus
C)altocumulus
D)altostratus
9.
How does water return to the atmosphere after precipitation? SC.D.1.3.3
A)transpiration
B)runoff
C)condensation
D)evaporation
10.
How does air move? SC.D.1.3.3
A)from an area of high pressure to an area of low pressure
B)from an area of low pressure to an area of high pressure
C)east to west
D)west to east
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