Multiple choice

What is happening below the Earth's surface to cause an earthquake?

  1. magma cools

  2. inner core rotation decreases speed

  3. tectonic plates shift

  4. deep ocean currents increase speed
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Earthquakes are primarily caused by the sudden release of energy in the Earth's crust, which occurs when tectonic plates shift or slide past one another.

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