Chapter 6 - Section 4 - Earthquake Safety

Question 1

What factors help geologists determine earthquake risk for a region?

Answer 1

by locating where faults are active and where past earthquakes have occurred.

Question 2

Why does the risk of quakes vary across the United States?

Answer 2

because the plates are in different locations

Question 3

What are 4 ways that earthquakes cause damage?

Answer 3

shaking

liquefaction,

aftershocks,

and tsunamis.

Question 4

How does liquefaction cause damage during an earthquake?

Answer 4

buildings sink and pull apart.

Question 5

How can you protect yourself during an earthquake?

Answer 5

drop, cover, and hold

Question 6

What will happen to a base-isolated building when seismic waves strike the building during an earthquake?

Answer 6

During a quake, the building moves gently back and forth without any violent shaking.

Question 7

What is liquefaction?

Answer 7

The process by which an earthquake’s violent movement suddenly turns loose soil into liquid mud.

Question 8

What is an aftershock?

Answer 8

An earthquake that occurs after a larger earthquake in the same area.

Question 9

What is a tsunami?

Answer 9

A large wave produced by an earthquake on the ocean floor

Question 10

What is a base-isolated building?

Answer 10

A building mounted on rubber pads or springs designed to absorb the energy of an earthquake.