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Chapter 7: Water on Earth

Total questions: 31

Worksheet time: 16mins

Name
Class
Date
1.
The oceans cover about what percentage of Earth?
a)
25 percent
b)
50 percent
c)
75 percent
d)
90 percent
2.
What carries warm water toward the poles?
a)
tides
b)
rivers
c)
waves
d)
currents
3.
Choose the phrase that belongs in the sentence.  A liter of cold water with high salinity ____ than a liter of warm water with low salinity.
a)
is lighter
b)
is heavier
c)
takes up less volume
d)
takes up more volume
4.
Which best describes rivers, streams, and lakes?
a)
surface salt water
b)
salty groundwater
c)
fresh groundwater
d)
surface fresh water
5.
How does an iceberg form?
a)
An iceberg forms when ocean water freezes.
b)
An iceberg forms when an ice sheet cracks at its base.
c)
An iceberg forms when water from a glacier flows into an ocean and freezes.
d)
An iceberg forms when a large piece of ice breaks off a glacier or ice sheet.
6.
Water that fills spaces between particles of rock and soil is
a)
rainwater
b)
salt water
c)
groundwater
d)
reservoir water
7.
What is the top level of groundwater in an aquifer called?
a)
water top
b)
water base
c)
water level
d)
water table
8.
Which process below does not involve water vapor?
a)
Water vapor rises to form a cloud.
b)
Groundwater flows into the ocean.
c)
Snow turns into water vapor by sublimation.
d)
Ocean water evaporates, leaving salt behind.
9.
Look at the picture of the water cycle. Which number shows evaporation?
a)
1
b)
2
c)
3
d)
4
10.
Look at the picture of the water cycle. Which number shows condensation?
a)
1
b)
2
c)
3
d)
4
11.
Dew forms during which part of the water cycle?
a)
runoff
b)
evaporation
c)
precipitation
d)
condensation
12.
Sometimes, water vapor on a surface may freeze without first becoming liquid water. What forms when this occurs?
a)
frost
b)
dew
c)
hail
d)
snow
13.
Which of the following is true about clouds in the summer sky?
a)
Many of them are made of ice crystals.
b)
They form at high altitude under great pressure.
c)
Many of them form at low altitude under low pressure.
d)
They are white because little sunlight gets through them.
14.
Frozen raindrops falling from clouds are called
a)
hail
b)
sleet
c)
snow
d)
freezing rain
15.
When air moves upward to areas of less air pressure, what often forms?
a)
fog
b)
dew
c)
clouds
d)
water vapor
16.

What fraction of Earth's water is not ocean water?

a)

97%

b)

3%

c)

90%

d)

10%

17.

What percent of Earth is not covered by the hydrosphere?

a)

75%

b)

40%

c)

50%

d)

25%

18.

Why does cold water sink under warm water in the ocean?

a)

Cold water is heavier than warm water.

b)

Warm water is heavier than cold water.

c)

Cold water is saltier than warm water.

d)

Warm water is saltier than cold water.

19.

What is an aquifer?

a)

A humidifier.

b)

a lake that forms behind a dam

c)

the layers of rock and soil that groundwater flows through

d)

the process of liquid water changing to water vapor

20.

Which is likely to have an impact on your local fresh water supply? (choose more than one)

a)

rainfall

b)

snowfall

c)

population

d)

swimming pools

21.

Where is most of Earth's ice found? (choose more than one)

a)

United States

b)

Antarctica

c)

Greenland

d)

Russia

22.

Select the main parts of the water cycle. (choose more than one)

a)

evaporation

b)

condensation

c)

precipitation

d)

runoff

23.

What is a cloud at ground level called?

a)

fog

b)

ground cloud

c)

cirrus

d)

cumulus

24.

Rain, snow, sleet, and hail are types of ___

a)

precipitation

b)

sublimation

c)

evaporation

d)

condensation

25.

The process of ice changing directly from a solid to a gas is ___

a)

evaporation

b)

condensation

c)

sublimation

d)

precipitation

26.

When raindrops freeze before they hit the ground, _____ forms.

a)

precipitation

b)

sleet

c)

salinity

d)

condensation

27.

The process of liquid water changing to water vapor is ____.

a)

precipitation

b)

sublimation

c)

evaporation

d)

condensation

28.

The top level of groundwater in an aquifer is the ____.

a)

aquifer

b)

reservoir

c)

sublimation

d)

water table

29.

___ is a measure of how salty water is.

a)

Sleet

b)

Salinity

c)

Evaporation

d)

Aquifer

30.

A lake that forms behind a dam is a(n)____.

a)

aquifer

b)

water table

c)

sublimation

d)

reservoir

31.

The process of water vapor changing to liquid water is ___.

a)

condensation

b)

sublimation

c)

evaporation

d)

preciptation

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