Great Science Adventures: Discovering Earth's Landforms & Surface Features, Lesson 5 Review

Front 1

Any ______ in the Earth's surface is considered an earthquake.

Back 1

vibration

Front 2

We don't feel most earthquakes because they are so ______.

Back 2

tiny

Front 3

The point in the lithosphere where the continental plates slip is called the ______ of the earthquake.

Back 3

focus

Front 4

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

Back 4

epicenter

Front 5

Vibrations called ______ ______ travel upward and outward from the focus. (two words)

Back 5

seismic waves

Front 6

When the continental plates stop moving, rocks resettle along the fault line, causing ______.

Back 6

aftershocks

Front 7

The ______ scale, a method of measuring earthquakes, is based on the amount of energy produced at the focus of an earthquake.

Back 7

Richter

Front 8

The Richter scale uses a ______, a pendulum-type instrument that measures surface vibrations.

Back 8

seismometer

Front 9

Scientists who study earthquakes are called ______.

Back 9

seismologists

Front 10

Another scale for measuring earthquakes is called the ______ scale and is based on eyewitness accounts.

Back 10

Mercalli