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2021 2.17: Unit Test: Oceans

Last updated almost 5 years ago

12 questions

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Question 1

1.

According to the density profile shown here, at which depth would you find the coolest, saltiest waters?

Depth A

Depth B

You cannot tell from this graph

Depth C

Question 2

2.

Ocean currents have an affect on which two things

climate and weather

land and sea

temperature and density

equator and poles

Question 3

3.

What do we call the constantly moving system of deep-ocean circulation driven by differences in temperature and salinity?

California Current

Surface Currents

Global Conveyor Belt

Gulf Stream

Question 4

4.

Salt water is _____________ fresh water.

more dense than

less dense than

the same density as

Question 5

5.

As the temperature of ocean water changes from 10 to 30 degrees C, how does the density change?

The water becomes more dense

The water becomes less dense

The density does not change

It is impossible to predict

Question 6

6.

What factors create deep ocean currents?

Increase in salinity; increase in temperature

Increase in salinity; decrease in temperature

Decrease in salinity, decrease in temperature

Decrease in salinity, increase in temperature

Question 7

7.

Which of the following drives global thermohaline (conveyor belt) circulation?

changes in density

changes in pH

changes in wind direction and velocity

changes in gravity

Question 8

8.

What is the upward movement of cold water from the ocean depths called?

La Nina

Upwelling

Global warming

El Nino

Question 9

9.

Imagine two planets. Planet A is completely covered by an ocean, and has an overall average albedo of 10%. Planet B is blanketed by clouds, and has an overall average albedo of 80%. Which planet reflects more sunlight back into space?

Planet A

Planet B

the two planets reflect the same amount of light

more information is needed to answer this question

Question 10

10.

Order these three surfaces - grasslands, fresh snow, and asphalt from highest albedo to lowest albedo.

snow--> asphalt --> grasslands

asphalt --> grasslands --> snow

snow --> grasslands --> asphalt

grasslands --> snow --> asphalt

grasslands --> asphalt --> snow

Question 11

11.

How does the earth's decreasing Albedo contribute to global warming? Explain exactly how albedo is causing global warming.

Question 12

12.

In class we learned about the possiblity of slowing of deep water currents. What would be the main cause of the slowing?

The density of the ocean water being decreased near Greenland

El nino warming the surface waters of the Pacific Ocean

Desalination plants around the world

Upwelling from the depths of the ocean