Earth Space Ch. 8

1.

2 points

What does Earth’s crust and uppermost mantle form?

lithosphere

asthenosphere

atmosphere

hydrosphere

2.

2 points

Earth’s inner core is solid because of

extreme cold

great diameter

composition of rock

immense pressure

3.

3 points

What is an earthquake’s epicenter?

the spot below the focus

a spot halfway between the focus and the surface

an spot along the nearest fault

the place on surface directly above the focus

4.

2 points

A tsunami can occur when there is vertical movement at
a fault under

San Andreas fault

ocean floor

small inland lake

a mountain range

5.

1 point

Elastic energy is the release of stored energy from
rocks that are deformed by stress.

True

False

6.

3 points

The continental crust is made largely of

limestone

basalt

granite

gneiss

7.

1 point

Most of Earth’s volume is contained in the core,
which is the layer beneath the crust.

True

False

8.

2 points

Violent shaking from an earthquake can cause soil and rock
on slopes to move and cause a

fault

tsunami

sinkhole

landslide

9.

2 points

Liquefaction occurs when

large waves wash over coastal areas and destroy structures

loose, saturated soil turns into liquid that can't support buildings

earthquakes occur in the ocean and damage ships at sea

mud slides downhill and buries buildings

10.

3 points

Where do most earthquakes occur?

mountains of Africa

edge of atlantic ocean

edge of pacific ocean

western lowlands of europe

11.

1 point

Movements that follow a major earthquake often produce smaller
earthquakes called foreshocks .

True

False

12.

2 points

A seismogram shows that P waves travel

at same speed as S waves

at same speed as surface waves

more slowly than S waves

faster than S waves

13.

1 point

Moment magnitude estimates the amount of energy
an earthquake releases and is derived from
the amount of displacement along a(n) fault.

True

False

14.

3 points

Most earthquakes are produced by the rapid release
of which kind of energy stored in rock subjected to
great forces?

kinetic

mechanical

elastic

thermal

15.

2 points

A travel-time graph can be used to find the

strength of an earthquake

focus of an earthquake

epicenter of earthquake

damage caused by an earthquake

16.

1 point

The seismic waves that travel along Earth’s outer layer are S
waves, and those that travel through its
interior are body waves.

True

False

17.

3 points

What measurement for earthquake do scientists use most
often today?

seismic scale

epicenter magnitude scale

Richter Scale

moment magnitude scale

18.

3 points

What is a fault?

another name for an earthquake

a place on Earth where earthquakes can't occur

a fracture in Earth where movement has occured

place on Earth where structures move during earthquake

19.

3 points

Earth’s thin, rocky outer layer is its

crust

asthenosphere

core

mantle

20.

2 points

What is the Moho?

material of which mantle is composed

area of mantle which will not transmit seismic waves

boundary between outer and inner core

boundary between crust and mantle

21.

3 points

The Earth’s core is made of an alloy of

zinc and magnesium

copper and iron

iron and nickel

iron and zinc

22.

1 point

An area along a fault where there has not been any earthquake activity
in a long period of time is called a(n) Richter gap.

True

False

23.

1 point

A tsunami warning system protects coastal areas around the Atlantic
Ocean.

True

False