Seismology
Parts of an Earthquake
Earthquake Waves
Strength and Intensity
Misc.
100

Scientists use this to detect and measure earthquake waves.

Seismometer

100

The place along a fault where the slipping that causes an earthquake begins is the earthquake's __________.

focus

100

A sudden movement of Earth's crust is a ____________.

Earthquake

100

The scale that measures the magnitude of an earthquake is called the ___________ scale.

Richter

100

Earthquakes happen when layers of rock along a _______ suddenly slip. 

fault

200

Y/N Can earthquakes be predicted?

No

200
What is the point on Earth's surface directly above an earthquakes starting point?
Epicenter
200

What are the fastest seismic waves that can travel through solids, liquids, and gases called?

Primary Waves

200
What is the measurement of the strength of an earthquake called?
magnitude
200

Waves of energy spread out from the ________, the place where the slipping began. 

Focus

300

Scientists use the __________ scale to measure the magnitude or energy the earthquake releases.

Richter

300

What is a crack in Earth's crust?

Fault

300

What waves stretch rock sideways and cannot travel through liquids? These waves are only half as fast.

Secondary Waves

300

The _________ scale measure only what people feel and damage done by on earthquake. 

Mercalli

300

When the waves reach the surface they spread out from the ___________ that is the point directly above the focus.

epicenter

400

What is the measurement of the energy that an earthquake releases?

Magnitude

400
What are the giant pieces of Earth's outer layer where most earthquakes occur called?
tectonic plates
400

A large ocean wave caused by an underwater earthquake is a(n) ____________.

Tsunami

400

Underwater earthquakes with a magnitude of ____ or greater may cause a large wave known as a tsunami. 

6.5

400

Which of the following is the safest place to be during an earthquake?

a. in a large truck

b. in a basement

c. under a car

d. under a strong table

d. under a strong table

500

In order to pinpoint an earthquakes location, scientists need information from how many seismometers?

a. 1

b. 2

c. 3

d. 4

c. 3

500
What are waves of energy that travel through earth called?
seismic waves
500

These waves do the most damage, are the slowest and move across the surface like ripples on a pond.

Surface Waves

500
After an earthquake, what might cause more damage to structures?
aftershocks
500

The epicenter of an earthquake is the place on the surface

a. where the slipping begins.

b. where the damage is greatest.

c. that is directly above the focus.

d. that is on the nearest place boundary. 

c. that is directly above the focus

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