Answers KISD Earth and Space Science IC Sem B Spring 2026 Unit Test — Unit testQuestion 28

28

QuizMultiple Choice

Unit Test — Unit test

Question 28 • KISD Earth and Space Science IC Sem B Spring 2026

Which statement explains what upwelling causes?

Answer

A

Upwelling causes tides to rise and fall.

B

Upwelling causes changes in the direction of currents.

C

Upwelling causes nutrients, minerals, and tiny organisms to rise.

D

Upwelling causes currents in the Pacific Ocean to change direction.

Explanation

Upwelling occurs when deep ocean water rises toward the surface. This water carries nutrients, minerals, and tiny organisms upward, making choice C correct. Tides are caused mainly by the gravitational pull of the Moon and Sun, not upwelling.

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