Earthquakes — Quiz

Question 1

A seismograph detects P-waves but no S-waves at a station located across the globe. What can scientists conclude about Earth's structure?

Revolt · Accepted Answer

There is a liquid layer inside Earth blocking S-waves.

Question 2

Which property explains why S-waves do not travel through Earth's outer core?

Revolt · Accepted Answer

their inability to travel through liquids

Question 3

What is the most likely reason rocks suddenly break and trigger earthquakes?

Revolt · Accepted Answer

Stored energy from tectonic stress exceeds the rock's strength.

Question 4

Scientists observe that P and S waves from an earthquake arrive at different times. Which statement best explains how this information helps locate the epicenter?

Revolt · Accepted Answer

The size of the time gap indicates how far away the epicenter is.

Question 5

Match each tool or term with its function or definition.

Revolt · Accepted Answer

measures seismic wave arrival|the surface above the focus|a method of finding earthquake location

Question 6

Which seismic wave causes the ground to compress and expand in the same direction the wave is moving?

Revolt · Accepted Answer

P-wave

Question 7

Why are P and S wave arrival times used to estimate an earthquake's location?

Revolt · Accepted Answer

The time difference between waves helps calculate the distance to the epicenter.

Question 8

Choose the correct answer from each drop-down menu to complete the statement.

Revolt · Accepted Answer

S-waves|liquid

Question 9

What does the time difference between the arrival of P-waves and S-waves indicate?

Revolt · Accepted Answer

distance to the epicenter

Question 10

Choose the correct answer from each drop-down menu to complete the statement.

Revolt · Accepted Answer

triangulation|the origin of an earthquake

Earthquakes — Quiz Answers

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