North Carolina Science Grade 8

Chapter 5: Water

Standardized Test Practice

1.
Approximately what percentage of Earth’s surface is covered by water?
A)40%
B)10%
C)70%
D)90%
2.
Which location contains the highest percentage of Earth's water supply?
A)glaciers
B)groundwater
C)lakes
D)oceans
3.
Water is composed of
A)carbon and oxygen.
B)nitrogen and oxygen.
C)hydrogen and oxygen.
D)hydrogen and carbon.
4.
Where can useable groundwater be found?
A)well
B)aquifer
C)soil
D)glacier
5.
Lakes, rivers, and streams are included in which type of water?
A)groundwater
B)soil water
C)surface water
D)ocean water
6.
Which activity utilizes the most water?
A)washing clothes
B)flushing toilets
C)washing dishes
D)showers and baths
7.
During which stage of the water cycle does water change from a liquid to a gas?

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A)condensation
B)evaporation
C)precipitation
D)infiltration
8.
During which stage of the water cycle is water transferred from the atmosphere to the surface?

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A)evaporation
B)precipitation
C)condensation
D)infiltration
9.
During which stage of the water cycle is water changed from a gas into a liquid?

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A)precipitation
B)evaporation
C)infiltration
D)condensation
10.
What is the specific heat of dry air?

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A)4186 J/kg°C
B)2093 J/kg°C
C)1005 J/kg°C
D)294 J/kg°C
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