Currents

Question 1

In 1947 Thor Heyerdahl sailed a simple raft from Peru to Polynesia, following the ocean currents for more than 6,000 kilometers. Which statement accurately describes what Heyerdahl proved by this voyage?

Revolt · Accepted Answer

It would have been possible for people from ancient Peru to reach Polynesia by following ocean currents.

Question 2

Compared with surface currents, deep currents are

Revolt · Accepted Answer

colder and denser.

Question 3

What are the two causes of density in deep current waters?

Revolt · Accepted Answer

Salinity (how much salt) of the water and low temperatures

Question 4

A stream-like movement of ocean water far below the ocean surface is a

Revolt · Accepted Answer

deep current.

Question 5

Temperature, salinity, and density are factors in the formation of

Revolt · Accepted Answer

deep currents.

Question 6

What force makes cold water sink toward the ocean floor?

Revolt · Accepted Answer

gravity

Question 7

How does the Coriolis effect make ocean currents appear to move?

Revolt · Accepted Answer

in a curved path

Question 8

Surface currents are caused by

Revolt · Accepted Answer

the wind.

Question 9

The curved paths of global winds and surface currents are caused by

Revolt · Accepted Answer

the Coriolis effect.

Question 10

The density of ocean water increases when it

Revolt · Accepted Answer

gets colder.

Currents Answers

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