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Earth & Space ScienceGrade 6-8

Earthquakes and Seismic Waves Answer Key

Understand what causes earthquakes and how seismic waves help scientists study Earth's interior.

Looking for Earthquakes and Seismic Waves answers? This complete answer key provides verified solutions for all student exploration activities and assessment questions in the ExploreLearning Earthquakes and Seismic Waves Gizmo.

100% Free • Step-by-step explanations • Perfect for homework help • Covers all activities • Updated for 2026

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What Causes Earthquakes

Q1.Why do earthquakes happen?

Answer

Tectonic plates get stuck as they try to move past each other. When they finally slip, the sudden release of energy causes an earthquake.

Q2.What's the focus of an earthquake?

Answer

The point underground where the earthquake starts.

Q3.What's the epicenter?

Answer

The point on Earth's surface directly above the focus.

Seismic Waves

Q4.What are P-waves?

Q5.What are S-waves?

Q6.How do scientists use seismic waves?

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