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AICE Marine Science Unit 1 Water (practice)

Total questions: 60

Worksheet time: 49mins

Name
Class
Date
1.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
2.
Which of the following statements about the kinetic particle theory is not true?
a)
The particles of a gas move faster than those of a liquid.
b)
The particles of a solid have more kinetic energy than those of a gas.
c)
The particles that make up matter are always moving.
d)
The forces of attraction between the particles of a solid are very strong.
3.

the ability of a solute to dissolve into a solvent

a)

dissolution

b)

solubility

c)

precipitation

d)

solvent

4.

when a body of water has a salinity level greater than 35 ‰

a)

hyposaline

b)

hypersaline

c)

salinity

d)

dissolved oxygen

5.

a boundary between two layers of water with different temperatures

a)

halocline

b)

thermocline

c)

salinity

d)

gradient

6.

a layer of water below the mixed surface layer where a rapid change in salinity can be measured as depth increases

a)

halocline

b)

thermocline

c)

salinity

d)

density

7.

A substance with a pH of 6 is called a....

a)

Base

b)

Acid

8.

Which acid listed is the strongest acid?

a)

Hydrochloric acid pH 1.0

b)

Sulfuric acid pH 1.2

c)

Tomatoes pH 4.2

d)

Water pH 7.0

9.
What is cohesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
10.
The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form
a)
less polar
b)
more polar
c)
less dense
d)
more dense
11.
Which statement explains why water molecules stick together?
a)
both sides are negative
b)
one side has a positive charge and the other side has a negative charge
c)
one side has a negative charge adn the other side has a neutral charge
d)
both sides are positive
12.

What two elements make up salt water?

a)

Sodium Chloride

b)

Sodium Salt

c)

Salt Chloride

d)

Potassium Chloride

13.

The measurement of salinity is

a)

the amount of salt in the water.

b)

the amount of chloride in the water.

c)

the amount of potassium in the water.

d)

the amount of nutrients in the water.

14.
 The density of ocean water is influenced by what two factors?
a)
 Salinity and temperature
b)
Water color and chlorophyll
c)
 Dissolved gases and dissolved solids
d)
 Dissolved carbon and trace elements
15.
 What is true about the water on the bottom of the ocean?
a)
 It is the saltiest water found in the ocean
b)
It is the densest water found in the ocean
c)
 It is not frozen because sunlight warms it up
d)
 It does not move
16.
 How do conditions change as the depth of the ocean water increases?
a)
temperature decreases and pressure increases
b)
temperature increases and pressure increases
c)
temperature decreases and pressure decreases
d)
temperature increases and pressure decreases
17.
If I have freshwater that is less dense, what will it do in comparison to salt water that is more dense?
a)
The more dense water will float and the less dense water will sink.
b)
The more dense water will sink and the less dense water will float
c)
Nothing they will mix evenly.
18.
As we go deeper into the ocean, salinity ___________. 
a)
Doubles
b)
Decreases 
c)
Increases
d)
Remains the same 
19.
What happens to pressure as you go deeper into the ocean? 
a)
increases
b)
decreases
c)
stays the same
d)
doubles
20.
Which process does NOT lead to a decrease in the salinity of water?
a)
runoff from land
b)
precipitation
c)
sea ice melting
d)
evaporation
21.
The higher the salt content in the ocean the ________ dense the water will be.
a)
less
b)
more
c)
nothing happens
22.
Rainfall and river runoff cause the salinity to _________________. 
a)
increase
b)
decrease
23.

In this model of layers of water, what can you infer about the red layer of water?

a)

It is warmer than the yellow, green, and blue layers

b)

It is colder than the yellow, green, and blue layers

c)

It is higher in salinity than the yellow, green, and blue layers

d)

It is higher in salinity and warmer than the other layers

24.

Which of the following causes most waves?

a)

Tides

b)

Wind

c)

Earthquake

d)

Sea animals

25.

Which type of water will sink?

a)

Warm, less salty

b)

Warm, more salty

c)

Cold, less salty

d)

Cold, more salty

26.

The deeper you go in the ocean, the water gets ________

a)

less salty

b)

saltier

27.

What causes ocean currents?

a)

The phase of the moon.

b)

The gravitational attraction of the sun

c)

Commercial boating activities.

d)

The temperature and salinity of ocean water

28.

What makes the surface of the ocean a different temperature from the rest?

a)

global warming

b)

the sun

c)

human activities

d)

glaciers melting

29.
The ocean makes up about ________ % of the Earth's surface. 
a)
100%
b)
53%
c)
70 %
d)
90%
30.
The temperature and salinity of the ocean change the most:
a)
Near the surface
b)
 Near the bottom
c)
 Near Antarctica
d)
Near the equator
31.

In this model, what is the order of layers from most dense to least dense?

a)

Blue, green, yellow, red

b)

Blue, yellow, green, red

c)

Green, Blue, yellow, red

d)

Red, yellow, green, blue

32.

What does Thermo and Haline mean?

a)

Thermo = temperature and Haline = salt

b)

Thermo = warm and Haline = cold

c)

Thermo = salt and Haline = temperature

33.

Which pictures shows the correct "Global Conveyor Belt"?

a)
b)
c)
d)
34.

Approximately 71% of Earth’s surface is covered with water. Most of this water is salt water found in the oceans. Where is the majority of Earth’s fresh water found?

a)

glaciers and ice caps

b)

lakes

c)

ponds

d)

oceans

35.

100* C is the....

a)

boiling point of water

b)

freezing point of water

c)

dew point of water

d)

evaporation point of water

36.

Why is water so good at dissolving so many substances?

a)

it is polar

b)

it is less dense as a solid

c)

cohesion

d)

adhesion

37.

Water has a slightly positive end AND a slightly negative end, this means water has

a)

polarity

b)

cohesion

c)

adhesion

d)

specific heat

38.

Water sticks to other substances like your hair, or a leaf because of which property?

a)

adhesion

b)

cohesion

c)

polarity

d)

specific heat

39.
The reason the water balloon did NOT pop while held over a flame is water's _________.
a)
Less dense than air.
b)
Hydrogen bonds between water molecules.
c)
polarity.
d)
high specific heat capacity.
40.
Water is a universal solvent because it...
a)
it can be found anywhere.
b)
it freezes when it gets cold.
c)
floats when frozen.
d)
dissolves most substances.
41.
Beryllium has how many protons?
a)
4
b)
9.0122
c)
2
d)
13.0122
42.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
43.

What is the mass number of this element?

a)

7

b)

8

c)

14

d)

14.01

44.

Which of the labeled structures is an electron?

a)

a

b)

b

c)

c

45.
Beryllium has how many protons?
a)
4
b)
9.0122
c)
2
d)
13.0122
46.

How many protons does fluorine have?

a)

19

b)

1

c)

9

d)

10

47.

Using the diagram as a reference, how many electrons does lithium have in its OUTER shell?

a)

1

b)

3

c)

8

d)

2

48.

Using the diagram as a reference, how electrons does carbon have in its OUTER shell?

a)

2

b)

6

c)

4

d)

1

49.

When two materials that have different densities, like oil and water, encounter one another, they will?

a)

exchange densities.

b)

mix uniformly.

c)

repel one another.

d)

separate according to their densities.

50.

Which statement is correct?

a)

Corn syrup is denser than water.

b)

Water is denser than corn syrup.

c)

Water is less dense than oil.

51.

What is the average salinity of oceans?

a)

31 ppt

b)

32 ppt

c)

36 ppt

d)

35 ppt

52.
Very slight increases in the acidity of seawater __________  marine organisms that make shells.
a)
doesn't bother
b)
has no effect on 
c)
is unhealthy and stresses
53.
Temperature  increases
a)
Density increases
b)
Density decreases
54.

Water that has more salinity than fresh water, but not as much as seawater is called...

a)

Brackish water

b)

In between water

c)

River water

d)

Semi-sea water

55.

Which are examples of decreasing salinity?

a)

Precipitation into the ocean

b)

Evaporation of water from the ocean

c)

Mouth of a river dumping freshwater into an ocean

d)

Glacier melting into an ocean

e)

Surface water freezing at the poles

56.

Salinity of seawater is expressed in these units...

a)

Parts per Million

b)

Parts per Thousand

c)

Parts per Negative

d)

Parts per Hundred

57.

Electrons involved in chemical bonding.

a)

valence

b)

ionic

c)

covalent

d)

metallic

58.

Which body of water has the highest salinity?

a)

Black Sea

b)

Dead Sea

c)

Indian Ocean

d)

Lake Michigan

59.

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt


Solution 2:

500 mL of water

90 g of salt

a)

Solution 1

b)

Solution 2

c)

They have the same concentration

d)

I have no idea

60.

Which solution is more diluted?

Solution 1:

1000 mL of water

60g of salt


Solution 2:

500 mL of water

60 g of salt

a)

Not enough information to tell

b)

Solution 1

c)

Solution 2

d)

They are equally diluted

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