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Unit 1 Marine Science - QCAA

Total questions: 79

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

What is bathymetry?

a)

The study of plate tectonics.

b)

The topography of the ocean floor.

c)

The topography of the land.

d)

The study of marine science

2.

Which of the following is the process of pulling CO2 from the atmosphere to make food?

a)
Photosynthesis
b)
Cellular Respiration
c)
Decomposition
d)
Nitrification
3.
Carbon dioxide and seawater combine to form
a)
calcium carbonate
b)
carbon monoxide
c)
carbonic acid 
4.
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
5.
Why doesn’t photosynthesis occur in deep ocean water?
a)
There is no sunlight.
b)
There are not enough nutrients. 
c)
The salinity level of the water is too high.
d)
The water temperature is too cold.
6.
What is an underwater mountain range where new ocean floor is made?
a)
subduction
b)
mid-ocean ridge
c)
deep-sea trench
7.

Sonar is the use of _____________ to "see" in the ocean.

a)

light

b)

sound

c)

cameras

d)

lasers

8.
Tectonic plates are still moving, causing continents to drift.
a)
True
b)
False
9.
What is it called when two oceanic plates move apart and new crust is formed?
a)
crustal integrating
b)
sea-floor spreading
10.

According to plate tectonic theory, a shift in tectonic plates will result in which of the following?

a)

Earthquakes

b)

Tsunamis

c)

Volcanoes

d)

All of the above

11.

Where is the majority of Earth's freshwater found?

a)

Rivers

b)

Lakes

c)

Streams

d)

Glaciers

12.

Which of the following statements is true.

a)

70% of Earth's surface is water

b)

The majority of Earth's water is freshwater

c)

Most freshwater is found free flowing on the surface in lakes and streams

d)

Most of the Earth's water is found in icebergs.

13.

What is the average salinity of the ocean in ppt?

(a)  

14.

Where does salt in the ocean come from?

a)

Table Salt

b)

Rain

c)

Rocks and the Earth’s mantle.

d)

Fish

15.

What region includes the continental rise, slope and shelf?

a)

The deep ocean-basin floor

b)

The mid-ocean ridge

c)

The continental seamount

d)

The continental margin

16.

Name at least two (2) bathymetric features you may find in the ocean basin.

4 lines
17.

A surface ocean (a)   is the movement of water on the surface of the ocean.

18.

Large systems of circulating (or rotating) ocean currents are called what?

a)

Ekman Spiral

b)

Gyres

c)

Upwelling

d)

Eddies

19.

Density _______ with depth in the ocean.

a)

decreases

b)

increases

c)

is constant

20.

In the ocean, temperature _______ with depth.

a)

decreases

b)

increases

c)

is constant

21.

Salinity is the saltiness of the water and in the ocean it __________ with depth.

a)

decreases

b)

increases

c)

is constant

22.

What is the approximate depth of the theromohaline as shown in the graph? (Tip: Click on the "Zoom in" button below to see clearly)

a)

less than 500 m

b)

500- 1000 m

c)

1000-1500 m

d)

4500 m

23.

This bathymetry measuring device can be towed behind a ship. There are two major types: GLORIA and Sea MARC.

a)

Echo Soundings

b)

Precision Depth Recorder (PDR)

c)

Multibeam Echo Sounders

d)

Side Scan Sonar

24.

The flat zone of the continental margin, that runs from the shore to the shelf break is the...

a)

Continental Shelf

b)

Continental Slope

c)

Continental Rise

d)

Abyssal Plains

25.

This zone contains some of the Earth's deepest and flattest parts. It experiences suspension settling and is well developed in both the Atlantic and Indian Oceans.

a)

Continental Shelf

b)

Continental Slope

c)

Continental Rise

d)

Abyssal Plains

26.

This is a volcanic Peak that is below sea level, and more than 1 km above the sea floor. There may be more than one correct answer.

a)

Volcanic Island

b)

Seaknoll

c)

Seamount

d)

Guyot

27.

Convergent margins create what structures that are generally found in the Pacific Ocean?

a)

Mid-Ocean Ridges

b)

Deep Ocean Rises

c)

Ocean Trenches

d)

Rift Valleys

28.

Which of these are the deepest parts of the oceans?

a)

Continental Shelf

b)

Abyssal Plain

c)

Ocean Trench

d)

Continental Rise

29.

Which part of the ocean floor is labeled "D"?

a)

Mid-Ocean Ridge

b)

Continental Slope

c)

Trench

d)

Abyssal Plain

30.

______ causes surface currents.

a)

The Coriolis Effect

b)

gravity

c)

density differences

d)

wind

31.

Decreasing ocean temperature causes the density of the water to ______.

a)

decrease

b)

increase

c)

stay the same

d)

fluctuate

32.

As plants and animals in the ocean die, the nutrients produced from their decay _____.

a)

are recycled by the Global Conveyor Belt

b)

sink to the bottom

c)

are destroyed by sunlight

d)

become coral reefs

33.

Nutrients are brought to the surface for phytoplankton to use at _______.

a)

gyres

b)

eddies

c)

upwellings

d)

the equator

34.

_______ causes the Coriolis Effect

a)

Earth's rotation

b)

gravity

c)

wind

d)

density

35.

Gyres in the southern hemisphere are surface currents that turn _________ due to the Coriolis Effect.

a)

clockwise

b)

counterclockwise

c)

toward the right

d)

toward the bottom of the ocean

36.

________ and _______ affect the ocean's density and cause the Global Conveyor Belt to travel

a)

gravity and the Coriolis Effect

b)

temperature and salinity

c)

wind and climate

d)

temperature and the Coriolis Effect

37.

The more scientific name of the Global Conveyor Belt is _____.

a)

halinethermal circulation

b)

thermohaline circulation

c)

thermodensity circulation

38.
Due to the Coriolis Effect, water in the northern hemisphere moves
a)
clockwise
b)
counter clockwise
c)
both
d)
neither
39.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
40.
Deep Ocean currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
41.
Where is ocean water the densest.
a)
The surface
b)
The middle
c)
The bottom
d)
Lake Michigan
42.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
43.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
44.
As you go deeper in the ocean, the water is colder and less salty.
a)
True
b)
False
45.
Cold water from deep in the ocean contains
a)
sea turtles
b)
surface currents
c)
solar energy 
d)
nutrients
46.
Where does the intial source of energy come from that creates winds and thus surface currents?
a)
The moon
b)
The sun
c)
The wind
d)
The rotation of the Earth
47.

Which is not true about salty water?

a)

Floats on top of freshwater

b)

Higher density

c)

It has more molecules than freshwater

d)

It sinks at the bottom of a container

48.

Based on the graph, which of the following statement is correct?

a)

Warm water sinks to the bottom of the ocean

b)

Cold water flows in the deepest part of the ocean

c)

Warm water flows on the surface of the ocean

d)

Cold water remains stationary in the deepest part of the ocean

49.

At which point of the Earth does warm ocean water rises?

a)

A

b)

B

c)

C

d)

D

50.

What does the blue line represent in the Thermohaline circulation?

a)

Warm salty water

b)

Warm water

c)

Cold water

d)

Cold salty water

51.

What does the red line represent?

a)

Warm water

b)

Warm salty water

c)

Cold water

d)

Cold salty water

52.

The two properties of ocean water that influence density are:

a)

location and precipitation

b)

salinity and speed

c)

speed and temperature

d)

temperature and salinity

53.

Which of the following types of water would SINK the fastest?

a)

warm and salty

b)

cold and salty

c)

warm and fresh

d)

cold and fresh

54.

Thermohaline circulation distributes which of the following?

a)

heat

b)

nutrients

c)

carbon dioxide

d)

all of the above

55.
What term is the measure of dissolved salts in water?
a)
Thermocline
b)
Salinity
c)
Saltiness
d)
Tides
56.
warmest ocean region
a)
westerlies
b)
polar
c)
poles
d)
equator
57.
coldest ocean region
a)
horse latitudes
b)
poles
c)
equator
d)
tropics
58.
Comes from the words 'heat' and 'salt'
a)
thermohaline
b)
salinity
c)
density
d)
temperature
59.
climate interaction linked to a periodic warming of sea surface temperatures across the central and east-central Equatorial Pacific
a)
drought
b)
El Nino
c)
hurricanes
d)
tornado
60.
 As the temperature of ocean water changes from 10 to 30 degrees C, how does the density change?
a)
The water becomes more dense
b)
The water becomes less dense
c)
 The density does not change 
d)
 It is impossible to predict
61.
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
62.

What is a thermocline?

a)

A rapid change in temperature with depth

b)

A rapid change in temperature with latitude

c)

A rapid change in salinity with depth

d)

A rapid change in density with depth

63.

Warmer water will remain ______ because ________

a)

at the surface; lower density than cool water

b)

at the surface; higher density than cool water

c)

deep; lower density than cool water

d)

deep; higher density than cool water

64.

What is stratification?

a)

Layering of ocean water based on its properties (temperature, salinity, density, etc.)

b)

Temperature differences with depth

c)

Salinity differences with depth

d)

Mixing of ocean water despite its different properties

65.
T4 - As salinity  increases
a)
Density increases
b)
Density decreases
66.
T4 - True or False Salinity increases as ocean depth increases.
a)
True
b)
False
67.
T4 - Seawater is typically denser than freshwater due to seawater’s —
a)
Greater depth
b)
Lower freezing point
c)
Smaller mass
d)
Higher salinity
68.
T4 - Where would you find the lowest density seawater?
a)
surface zone
b)
deep zone
c)
transition zone
d)
abyssal zone
69.
Oxygen can enter the water
a)
through respiration
b)
by product of photosynthesis
c)
decomposition
d)
oxidation of metals
70.
Waters __________ allows it to dissolve other ions and molecules.
a)
acidity
b)
neutrality
c)
pH
d)
polarity
71.
The layer in which temperature rapidly decreases
a)
halocline
b)
pycnocline
c)
thermocline
72.
The layer in which density increases
a)
densocline
b)
halocline
c)
thermocline
d)
pycnocline
73.
Salinity is measured in 
a)
parts per million
b)
parts per thousand
c)
milligrams
d)
milliliters
74.
Seawater is typically denser than freshwater due to seawaters-
a)
greater depth
b)
smaller mass
c)
higher salinity
d)
lower freezing point
75.

Match the following

a)

mid ocean ridge

1.

a divergent plant boundary where ocean spreads

b)

seamount

2.

a volcanic mountain that does not reach sea surface

c)

deep sea trench

3.

steep sided depression in the ocean floor

d)

abyssal plain

4.

underwater desert flat and featureless

e)

continental shelf

5.

drowned edge of continent, relatively shallow

76.

oxygen is cycled through the atmosphere by

a)

animals respiring and plant photosynthesising

b)

through burning of fossil fuels in large amounts on land

c)

is not required

d)

can not be done

77.

Match the following

a)

upwelling

1.

vertical currents that bring up nutrients rich cold water

b)

down welling

2.

vertical currents that send down water

c)

rip current

3.

large amounts of water returning to the sea after wave action

d)

eddy

4.

circular movement of water due to an obstruction

e)

El Nino

5.

brings dry weather to Australian climate

78.

Match the following

a)

thermocline

1.

rapid change in temperature of water

b)

halocline

2.

rapid change in salinity in water

c)

pycnocline

3.

rapid change in density

79.

A rapid change in temperature between two layers of water is known as:

a)

halocline

b)

pycnocline

c)

imincined

d)

thermocline

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