Earthquake Unit Review

Earthquake Unit Review

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Earthquake Location & Frequency

This map shows the location of earthquakes across the world in the past 7 days. Each dot is an earthquake and the red lines are tectonic plate boundaries.

Multiple Choice

Earthquakes can occur ____.

• on land only

• in the ocean only

• on both land and ocean

Multiple Choice

How often do earthquakes occur?

• almost never

• a few times a year

• a few times a month

• daily

Multiple Choice

Earthquakes are NOT related to the movement of tectonic plates.

• True

• False

Open Ended

List 2 things you should do BEFORE an earthquake.

Open Ended

List 2 things you should do DURING an earthquake and 1 thing you should NOT do.

Open Ended

List 2 things you should do AFTER an earthquake and 1 thing you should NOT do.

Multiple Choice

Earthquake warning systems warn people _____.

• days before an earthquake

• minutes before and earthquake

• after the earthquake has occurred

Seismograms

Multiple Choice

Which type of seismic wave is faster?

• p-wave

• s-wave

Multiple Choice

Which type of seismic wave creates more ground shaking?

• p-wave

• s-wave

Multiple Choice

How many seismograph stations are needed to locate an earthquake epicenter?

• 1

• 2

• 3

Multiple Choice

An earthquake has just occurred. At Recording Station A, 45 seconds (Δt=45s) passes between the arrival of the P-wave and the S-wave. At Recording Station B, 100 seconds (Δt=100s) passes between the arrival of the P-wave and the S-wave. Which recording station is CLOSEST to the epicenter?

• Station A

• Station B

• Station A and B are equal distance from the epicenter.

Multiple Choice

Which of the following methods for measuring earthquakes is considered outdated because it is only useful for small, shallow earthquakes.

• Modified Mercalli Scale

• Richter Scale

• Intensity

• Moment Magnitude

Multiple Choice

Can scientists accurately predict earthquakes?

• Yes

• No