Earthquakes
Practice Test
1.
What is the water content in the magma that fuels the volcano shown in the figure?
a.
water completely absent
b.
more water
c.
average water
d.
less water
2.
What are most earthquakes associated with?
a.
mid-ocean ridges
b.
plate boundaries
c.
rift valleys
d.
divergent plate boundaries
3.
A large ocean wave that is generated by vertical motions of the seafloor during an earthquake is called a(n) __________.
a.
upwelling current
b.
tidal range
c.
tsunami
d.
seiche
4.
According to the figure, where is an earthquake's focus most likely to occur?
a.
in the middle of the Pacific Ocean
b.
along the west coast of North America
c.
in northern Eurasia
d.
near the south pole
5.
What are shallow, intermediate, and deep earthquake classifications based on?
a.
the amount of damage
b.
amplitude of the largest wave
c.
frequency of the largest wave
d.
the depth of the focus
6.
What is Earth's core composed of?
a.
hydrogen and iron
b.
iron and nickel
c.
nickel and silicon
d.
magnesium and silicon
7.
How are the convection currents set in motion?
a.
the heat from radioactive decay
b.
slab push and ridge pull
c.
slab push
d.
spreading mid-ocean ridges
8.
According to the map, at which latitude and longitude is most likely to experience an earthquake?
Click here for figure
a.
60
N, 120
E
b.
0
N, 30
W
c.
30
S, 60
W
d.
0
N, 180
W
9.
Which type of stress pulls a material apart?
a.
strain
b.
compression
c.
shear
d.
tension
10.
When is wind-transported material deposited?
a.
when the wind changes direction
b.
when the wind becomes stronger
c.
when the wind slows
d.
when the particles break apart
11.
What is a rock called that has been shaped by wind-blown sediments?
a.
a ventifact
b.
a desert pavement
c.
a dune
d.
loess
12.
What is the process called when one plate is forced beneath another at a convergent plate boundary?
a.
subduction
b.
subtraction
c.
convergence
d.
transformation
13.
How many times larger is a magnitude 3 than a magnitude 1 earthquake on the Richter scale?
a.
1/10 times
b.
10 times
c.
100 times
d.
100 000 times
14.
How is a volcanic crater connected to a magma chamber?
a.
by a vent
b.
by tephra
c.
by a sill
d.
by a hot spot
15.
What is thought to be the driving mechanism of plate movement?
a.
continental drifting
b.
volcanoes
c.
conduction of heat in the mantle
d.
convection currents in the mantle
16.
__________ are submerged basaltic volcanoes more than 1 km high.
a.
Fracture zones
b.
Shelf breaks
c.
Seamounts
d.
Submarine canyons
17.
What does GPS stand for?
a.
Global Potential Satellite
b.
Global Positioning System
c.
Geodial Position Satellite
d.
Geographic Positioning System
18.
Why does knowledge of Earth's interior come from seismic waves?
a.
They change direction and intensity when they encounter different material.
b.
They change speed and direction when they encounter different materials.
c.
They change type when they encounter different materials.
d.
They change speed only when they encounter different materials.
19.
According to the graph, at what depth does the sea floor start to drop off?
a.
1 km
b.
8 km
c.
4 km
d.
2 km
20.
Which method uses sound waves for remote sensing?
a.
Topex/Poseison satellite
b.
Landsat satellite
c.
sonar
d.
GPS
