The Importance of Water — Unit test Answers

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1
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Which statement best explains why water is known as the universal solvent?

A
Water is vital in allowing the chemical reactions for life to occur.
B
Liquid water is a medium in which biochemical reactions can occur.
C
Water can carry unreacted substances from location to location.
D
Water has the ability to dissolve more substances than any other liquid.
2
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Look at the data below. Water Levels in the Ogallala AquiferBased on this data, predict what will happen to the water in the Ogallala aquifer over the next decade.

Question illustration
A
The water will continue to increase.
B
The water will continue to decrease.
C
The water will remain the same.
D
The water will be completely depleted.
3

Which statement best explains why water is essential for all living things?

A
Water makes up 65% of human beings.
B
Water is an essential component of blood.
C
Water covers 75% of Earth’s surface.
D
Water is necessary for cellular functions.
4

By which process do plants lose their water to the atmosphere?

A
sublimation
B
transpiration
C
condensation
D
precipitation
5

Which is least likely to be a reservoir for fresh water?

A
ocean
B
atmosphere
C
ice and snow
D
aquifer
7

Which best explains the surface tension of water?

A
capillary action
B
cohesion
C
adhesion
D
sublimation
9

Which type of bond forms between water molecules?

A
capillary bond
B
hydrogen bond
C
covalent bond
D
polar bond
10

Which bonds are found inside a water molecule, between hydrogen and oxygen?

A
hydrogen bonds
B
electronegative bonds
C
proton bonds
D
covalent bonds
11

Which process could cause ice to form a thin layer over a lake?

A
freezing
B
sublimation
C
evaporating
D
condensation
12

Which type of bond forms between water molecules?

A
capillary bond
B
hydrogen bond
C
covalent bond
D
polar bond
13

Which point(s) in the water cycle below best illustrate(s) water changing to a gas, and which term(s) could describe it?

Question illustration
A
1; sublimation or evaporation
B
1 and 2; evaporation only
C
3; precipitation or transpiration
D
3 and 4; transpiration only
14

Which process could cause ice to form a thin layer over a lake?

A
freezing
B
sublimation
C
evaporating
D
condensation
15

Look at the data below. Water Levels in the Ogallala AquiferBased on this data, predict what will happen to the water in the Ogallala aquifer over the next decade.

Question illustration
A
The water will continue to increase.
B
The water will continue to decrease.
C
The water will remain the same.
D
The water will be completely depleted.
16

In the water cycle shown below, which process is happening at step 3?

Question illustration
A
precipitation
B
melting
C
evaporation
D
sublimation
17

Which statement best explains why water is known as the universal solvent?

A
Water is vital in allowing the chemical reactions for life to occur.
B
Liquid water is a medium in which biochemical reactions can occur.
C
Water can carry unreacted substances from location to location.
D
Water has the ability to dissolve more substances than any other liquid.
18

Which stores groundwater?

A
glacier
B
runoff
C
aquifer
D
lake
19

Which point(s) in the water cycle below best illustrate(s) water changing to a gas, and which term(s) could describe it?

Question illustration
A
1; sublimation or evaporation
B
1 and 2; evaporation only
C
3; precipitation or transpiration
D
3 and 4; transpiration only
20

Which bonds are found inside a water molecule, between hydrogen and oxygen?

A
hydrogen bonds
B
electronegative bonds
C
proton bonds
D
covalent bonds

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