Section #: 19.2
Seismic Waves and Earth's Interior
Practice Test
1.
Which wave arrives at a seismic facility first?
a.
tidal wave
b.
P-wave
c.
surface wave
d.
S-wave
Hint
2.
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 speed only when they encounter different materials.
d.
They change type when they encounter different materials.
Hint
3.
What is the study of earthquakes called?
a.
sedimentology
b.
seismology
c.
cartography
d.
geology
Hint
4.
Use the graph to determine how long it took for S-waves to reach Station B after the earthquake.
a.
5 minutes
b.
10 minutes
c.
20 minutes
d.
30 minutes
Hint
5.
What is Earth's core composed of?
a.
hydrogen and iron
b.
nickel and silicon
c.
magnesium and silicon
d.
iron and nickel
Hint
6.
What type of instrument can measure the vibrations of an earthquake?
a.
seismometer
b.
GPS
c.
seismograph
d.
sonar
Hint
7.
The record produced by a seismometer is called a __________.
a.
seismogram
b.
plot
c.
seismochart
d.
seismograph
Hint
8.
Which waves are called body waves?
a.
surface waves only
b.
P-waves and S-waves
c.
surface waves and S-waves
d.
P-waves and surface waves
Hint
9.
What is the crustal part of the lithosphere primarily composed of?
a.
simple oxides
b.
peridotite
c.
iron and nickel
d.
igneous rocks
Hint
10.
According to the seismogram shown in the figure, which wave is the fastest?
a.
P-wave
b.
S-wave
c.
Surface wave
d.
Tidal wave
Hint
