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Oceans Unit Review

Total questions: 85

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
The gradually sloping part of a continent that extends under the ocean is the...
a)
continental slope
b)
continental shelf
c)
abyssal plain
d)
trench
2.

plant-like organisms that live in the water and make their own food through photosynthesis

a)

phytoplankton

b)

zooplankton

3.

ocean floor, from coastline to deep ocean

a)

benthic zone

b)

pelagic zone

c)

intertidal zone

d)

neritic zone

4.

shallow area of ocean from intertidal zone to continental shelf, receives lots of sunlight

a)

benthic zone

b)

pelagic zone

c)

intertidal zone

d)

neritic zone

5.

the part of the ocean nearest to land between the high and low tide lines; depth and temperature change with the tide

a)

benthic zone

b)

pelagic zone

c)

intertidal zone

d)

neritic zone

6.

open ocean; massive area with lots of sunlight and diversity of life

a)

benthic zone

b)

pelagic zone

c)

intertidal zone

d)

neritic zone

7.

a type of ocean current that carries cold, nutrient-rich water from the deep ocean to the surface

a)

upwelling

b)

hydrothermal vents

c)

cold seeps

8.

a crack in the Earth's crust that allows hot, mineral-rich fluid to escape; chemosynthesis can take place

a)

upwelling

b)

hydrothermal vents

c)

cold seeps

9.

microscopic animals that eat phytoplankton

a)

zooplankton

b)

cold seeps

c)

upwelling

d)

benthos

10.

the use of chemicals to create energy for an organisms food; occurs in deep sea bacteria

a)

photosynthesis

b)

respiration

c)

chemosynthesis

11.
The large, flat part of the ocean floor is called the _____________. 
a)
trench
b)
continental shelf
c)
continental slope
d)
abyssal plain
12.
What is a deep, underwater valley or canyon on the ocean floor?
a)
seamount
b)
trench
c)
continental rise
d)
continental slope
13.

the steep drop-off between the outer edge of the continental shelf and the deep ocean floor

a)

continental shelf

b)

guyot

c)

continental slope

d)

trench

14.

an underwater mountain chain where new ocean floor is formed

a)

mid-ocean ridge

b)

seamount

c)

guyot

d)

abyssal plain

15.

Tiny living creatures that float near the oceans surface and move with currents

a)

Sea horses

b)

Plankton

c)

jelly fish

d)

sharks

16.

The zone in the oceans layers with the warmest temperatures that is warmed by sunlight and most life exist there?

a)

Photic Zone

b)

Depth

c)

Water temperature

d)

Mid- Ocean Ridge

17.

the production of light by means of a chemical reaction in an organism

a)

transition zone

b)

deep zone

c)

bio-luminescence

d)

surface zone

18.

permanently dark layer of the oceans below the photic zone

a)

aphotic zone

b)

photic zone

c)

surface zone

d)

intertidal zone

19.
As oceans become deeper, the water pressure ___________________.
a)
increases
b)
decreases
c)
stays the same
20.
organisms that live on or in the bottom
a)
benthos
b)
neuston
c)
littoral
d)
heterotrophs
21.

organisms that freely swim in the ocean

a)

neuston

b)

plankton

c)

nekton

d)

naphron

22.

a division of the benthic zone, the ocean bottom in the deepest part of the ocean

a)

abyssal zone

b)

bottom zone

c)

epipelagic zone

d)

neritic zone

23.
the open water area beyond the continental shelf
a)
oceanic zone
b)
tidal zone
c)
bahyal zone
d)
abyssal zone
24.
the entire bottom portion of the ocean
a)
pelagic zone
b)
bathyal zone
c)
neustonic zone
d)
benthic zone
25.

Which one can move against currents?

a)

Plankton

b)

Nekton

c)

Benthos

26.

Which one drifts freely in the ocean (doesn't move against the current)?

a)

Nekton

b)

Benthos

c)

Plankton

27.

Where do nektons live in the ocean?

a)

Bottom

b)

Top

c)

Both bottom and top

d)

Neither

28.

A lobster spends its life traveling the sea floor. We could describe an organism as :

a)

Plankton

b)

Nekton

c)

Pelagic

d)

Benthos

29.

A whale can be described as

a)

Plankton

b)

Pelagic

c)

Benthos

d)

Nekton

30.

Scientists group marine organisms according to where they live and how they move.

a)

True

b)

False

31.
Surface currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
32.
Deep Ocean currents are a result of
a)
Global Wind Patterns
b)
Earth's Rotation
c)
Density
d)
All of the above
33.
The Coriolis Effect is caused by
a)
Earth rotating around the sun
b)
Earth rotating on its axis
c)
The tides
d)
Gravity
34.
The Gulf stream carries _____________ water from the east coast of The United States to the West coast of Europe.
a)
Cold
b)
Warm 
c)
Freezing
d)
Fresh
35.
Warm ocean currents generally come from
a)
The North Pole
b)
The South Pole
c)
The Equator
d)
Both A and B
36.
Cold ocean currents generally come from
a)
The North Pole 
b)
The South Pole
c)
The Equator
d)
Both A and B
37.
The California Current (west coast) carries _________ water from canada
a)
Cold 
b)
Warm
c)
Freezing
d)
Fresh
38.
Two types of water currents are
a)
local and global
b)
sea and land
c)
surface and deep
d)
warm and cold
39.
Ocean currents have an affect on which two things
a)
climate and weather
b)
temperature and density
c)
land and sea
d)
equator and poles
40.
A strong surface current that runs along the east coast of the United States and carries warm water to Europe.
a)
California Current
b)
Global Conveyor Belt
c)
Gulf Stream
d)
Surface Current
41.
A cool current in the Pacific Ocean near North America that brings cold water down from Canada.
a)
California Current
b)
Global Conveyor Belt
c)
Gulf Stream
d)
Surface Current
42.
Constantly moving system of deep-ocean circulation driven by temperature and salinity. It moves water around the globe.
a)
California Current
b)
Global Conveyor Belt
c)
Surface Currents
d)
Gulf Stream
43.
A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface.
a)
Gulf Stream
b)
Global Conveyor Belt
c)
Surface Current
d)
Gyre
44.
The large, circular surface-current pattern found in each ocean.
a)
California Current
b)
Surface Current
c)
Gyre
d)
Global Conveyor Belt
45.
What term is the measure of dissolved salts in water?
a)
Thermocline
b)
Salinity
c)
Saltiness
d)
Tides
46.
The higher the salt content in the ocean the ________ dense the water will be.
a)
less
b)
more
c)
nothing happens
47.
What are two things that affect the density of deep ocean currents?
a)
temperature & salt amounts
b)
temperature & the hemisphere
c)
surface currents & wind 
d)
salt amount & ocean location
48.
Scientists use ______ to determine the oceans depth.
a)
Submarines
b)
Sonar
c)
Helicopters
d)
Radiowaves
49.
What is the area in an ocean basin where new ocean floor is forming?
a)
New seafloor forms at mid-ocean ridges as lava erupts through cracks in Earth’s crust.
b)
New ocean floor forms at continental slope
50.
The highest salinity would be found in which of the following areas?
a)
an area with high rates of precipitation
b)
an area with high rates of evaporation
c)
an area with plenty of runoff
d)
all of the above
51.
Which process increases the salinity of water?
a)
runoff from land
b)
formation of sea ice
c)
precipitation
d)
melting of sea ice
52.
Where is ocean water the densest.
a)
The surface
b)
The middle
c)
The bottom
d)
Lake Michigan
53.
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
54.
In addition to salinity, what factor affects the density of seawater?
a)
depth
b)
latitude
c)
temperature
d)
salt content
55.
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.
56.
Which represents the distribution of water on Earth?
a)
3% freshwater, 97% salt water
b)
97% freshwater, 3% salt water
c)
71% freshwater, 29% salt water
d)
29% freshwater, 71% salt water
57.
As temperature increases...
a)
Density increases
b)
Density decreases
58.

Thermohaline circulation distributes which of the following?

a)

heat

b)

nutrients

c)

carbon dioxide

d)

all of the above

59.
One positive effect of the oceanic conveyor belt on ocean ecosystems.
a)
It takes oxygen down to the bottom of the ocean.
b)
It brings nutrients to the surface waters
c)
It mixes water from cold and warm places and prevents extreme conditions
d)
All of the above
60.
Why is the Oceanic Conveyor Belt also called the Thermohaline Circulation?
a)
Because it was discovered by Thermo Haline.
b)
Because it is driven by temperature and salt differences 
c)
Because it flows at the surface and bottom of the ocean.
d)
Because of the quant mauve colour of the water
61.
Ocean acidification begins with 
a)
pollution from ships
b)
carbon dioxide released from combustion
c)
dumping of waste from cities into the ocean
62.
Carbon dioxide and seawater combine to form
a)
calcium carbonate
b)
carbon monoxide
c)
carbonic acid 
63.
Marine organisms make their shells from calcium and
a)
chloride
b)
carbonate
c)
seawater
64.
An example of a marine organism that needs calcium carbonate 
a)
a crab
b)
a shark
c)
an octopus
65.
The process of burning fuel to drive a car or operate a factory is called 
a)
photosynthesis
b)
combustion
c)
respiration
66.

What happens to 1/4 of the greenhouse gases in the atmosphere?

a)

It is released into space.

b)

It gets absorbed by the ocean.

67.

What do some marine creatures do with the carbonate ion?

a)

use it as a food source

b)

use it as a defense mechanism

c)

use it to build shells and exoskeletons

d)

use it to cool body temperatures

68.

Ocean acidification raises the pH of the ocean .

a)

True

b)

False

69.

Coral reefs are endangered by:

a)

Climate change

b)

Overfishing

c)

Pollution

d)

All of the above

70.

Coral bleaching is:

a)

an overgrowth of algae

b)

when coral polyps reject the zooxanthella and algae living inside them

c)

a disease that attacks coral

d)

how marine biologists clean up the coral

71.

What is the main cause of coral bleaching?

a)

oil spills

b)

warmer water temperatures

c)

overfishing

d)

red tide

72.

Coral reefs can be under stress from (there are 3 correct answers to check)

a)

pollution

b)

fish attacks

c)

hot ocean temperatures

d)

storms

73.

When coral reefs are under stress they reject the animals that live on them. This is called

a)

expulsion

b)

eviction

c)

coral bleaching

74.

True or false, plastic does not biodegrade or disappear.

a)

True

b)

False

75.

Tiny pieces of plastic that don't break down or biodegrade are called

a)

microphones

b)

microscopes

c)

micro-bacteria

d)

microplastics

76.

How can we stop the garbage from growing?

a)

Take care of your trash and throw it out the right way.

b)

Remember that land and sea are both connected.

c)

Reduce the garbage you produce and recycle plastics.

d)

All of the above

77.

Ocean plastic primarily comes from ocean dumping and industry, such as cruise ships or container ships.

a)

True

b)

False

78.

Most of the debris that makes up the Garbage Patch is:

a)

Plastic

b)

Garbage Bags

c)

Garbage Patch Kids

d)

Dirt

79.

Why does all of this debris collect here?

a)

a. it's a garbage party!

b)

b. the debris is not biodegradable

c)

c. It floats easily

d)

Both b and c

80.

Which example is harmful to marine wildlife?

a)

sea turtles mistaking plastic bottles for jellyfish

b)

Albatrosses feeding plastics to their young thinking they're food

c)

Marine wildlife becoming entangled in plastics and nets

d)

All of these

81.

How does the Garbage Patch harm algae and plankton?

a)

it blocks needed sunlight

b)

it hoards oxygen

c)

it doesn't harm it at all

d)

it deprives it of nitrogen

82.

How is harming algae and plankton bad for other ocean wildlife?

a)

disrupts the water cycle

b)

it's not that bad

c)

it's actually beneficial

d)

deprives larger organisms of food & disrupts the food chain

83.

What major concern prevents the cleanup of the Garbage Patch?

a)

it's in the center of the ocean

b)

no country wants to claim it

c)

no country wants to be financially responsible for it

d)

all of these

84.

Where is the world’s biggest collection of garbage?

a)

United States

b)

China

c)

Middle of the Atlantic Ocean

d)

Middle of the Pacific Ocean

85.

What happens to plastic waste?

a)

It is a biodegradable material so it eventually disintegrates

b)

It never fully goes away, it just breaks into little pieces

c)

There is no such thing as plastic waste, all plastic is recycled

d)

It is dumped in the ocean for fish to eat

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