Multiple choice

The theory of plate tectonics helps scientists explain _____.

  1. why Earth's core is less dense than the mantle

  2. how ocean currents move over Earth's surface

  3. why hurricanes occur

  4. how earthquakes and volcanic eruptions occur
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plate tectonics explains the movement of Earth's outer shell, which directly causes earthquakes, volcanic activity, and the formation of mountain ranges.

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