Answers KISD Earth and Space Science IC Sem B Spring 2026 Unit Test — Unit testQuestion 14

14

QuizMultiple Choice

Unit Test — Unit test

Question 14 • KISD Earth and Space Science IC Sem B Spring 2026

Which is one characteristic of deep ocean currents?

Answer

A

Deep ocean currents move quickly.

B

Deep ocean currents are caused by winds.

C

Deep ocean currents move cold water toward the equator.

D

Deep ocean currents are affected by temperature but not by salinity.

Explanation

Deep ocean currents are driven by differences in water density, which depend on both temperature and salinity. Cold, dense water sinks near the poles and flows through the deep ocean toward the equator, so “Deep ocean currents move cold water toward the equator” is correct. These currents generally move slowly, and winds mainly drive surface currents.

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