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z2.08 Unit 2 Ocean Test MOD 25-26

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Last updated about 2 hours ago
22 questions
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Question 1
1.

Question 2
2.

Where would you expect to find a garbage patch in the North Pacific Ocean?

Question 3
3.

Which layer of the ocean has the highest salinity?

Question 4
4.
Deep ocean circulation is powered by differences in density, temperature, and salinity. We call this the Great Ocean Conveyor Belt.

In the North Atlantic Ocean near Greenland, ice forms. The salty, cold water sinks and warm water replaces it.

But in recent years less ice has been forming in the North Atlantic. How will that affect the Great Ocean Conveyor Belt near Greenland?

The water will become __________ salty and sink more __________.
Question 5
5.

Question 6
6.

Question 7
7.

Question 8
8.

What are the harmful effects of marine debris on living things? Give 1 example.

Question 9
9.

Question 10
10.

Question 11
11.

Question 12
12.
The Pacific Northwest experiences __________ conditions during El Niño and __________ conditions during La Niña.
Question 13
13.
The effects of El Niño and La Niña have __________ since 1950.
Question 14
14.

Question 15
15.

Question 16
16.

Question 17
17.
The pH of the ocean is slightly __________ but since 1850 has become more __________
Question 18
18.

How does ocean acidification affect sea creatures that have shells?

Question 19
19.

Question 20
20.

Question 21
21.

Question 22
22.

Compare warm and cold ocean water.
Rises to the surface
Sinks to the bottom
Less salty
Very salty
Warm Ocean Water
Cold Ocean Water
A teacher did a demonstration with one cup of fresh water dyed yellow and one cup of salty water dyed blue.

Using a piece of cardboard between them, she arranged the yellow fresh water cup over the blue salt water cup.

What will happen when she removes the cardboard between them?
The water will mix together and change to green
The water will stay separated and the colors will not mix
Which explanation best supports your answer to the previous question?
The blue salt water's matter was loosely packed, so there was room for the yellow fresh water to fill in
Fresh and salt water repel each other
The blue salt water's matter was more closely packed, so there was no room for the yellow fresh water to sink
What is the most common marine debris found in the ocean?
Drinking straws
Microplastics
Tires
El Niño is characterized by cold ocean surface temperatures and La Niña is characterized by warm ocean surface conditions in the Pacific Ocean.
True
False
Categorize these images as El Niño, normal, or La Niña conditions.
El Niño
Normal
La Niña
When does the upwelling near South America slow down, affecting Peruvian fishermen?
normal conditions
La Niña conditions
El Niño conditions
Which type of symbiosis is the relationship between a coral polyp and its algae (zooxanthellae)?
parasitism
commensalism
mutualism
Explain why you chose your answer to the previous question. How does the relationship between the coral polyp and algae represent that type of symbiosis?
The coral and algae harm each other
The coral and algae don't do anything for each other
The coral and algae help each other
What will cause coral to expel their algae symbionts?
Disease
Increased temperature
Damage from humans
What drives the ocean's surface currents?
gravity
temperature
wind
Which TWO factors drive thermohaline circulation (deep ocean currents)?
wind
temperature
saltiness
What do organisms like clams, oysters, and corals use to build their shells and skeletons?
Calicum carbonate
Sodium chloride
Carbon dioxide
Which molecule is responsible for changing the pH of the ocean?
Calicum carbonate
Sodium chloride
Carbon dioxide