WorksheetsEarthquakes
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
This is the area beneath the Earth's surface where the earthquake begins
a)
epicenter
b)
focus
c)
fault line
d)
tectonic plate
2.
These are the first waves released during an earthquake
a)
S waves
b)
Surface Waves
c)
P waves
3.
You use a travel-time graph (difference in P and S Wave arrival times) to find:
a)
Distance to epicenter
b)
Distance to fault
c)
Distance to core
4.
Earthquakes happen every day. Most are too small for humans to notice.
a)
True
b)
False
5.
At about what time did all of the S-waves hit?
a)
20 sec
b)
45 sec
c)
50 sec
d)
10 seconds
6.
The motion caused by earthquakes travels outward from the focus in the form of
a)
Electromagnetic waves
b)
Seismic waves
c)
Gravity waves
d)
Chemical energy
7.
A break in the lithosphere along which movement has occurred is a(n)
a)
fault
b)
earthquake
c)
epicenter
d)
volcano
8.
Which kind of waves can NOT travel through a liquid?
a)
P waves
b)
S waves
c)
Radio Waves
d)
X rays
9.
Which kind of wave arrives at seismic stations second?
a)
P (primary)
b)
S (secondary)
c)
L (love)
d)
R (rayleigh)
10.
The focus of an earthquake is
a)
The point (below Earth's surface) where rock breaks
b)
The closest seismic station
c)
The place where the greatest damage occurs
d)
A fault
11.
Earthquakes under the water can cause _________________________________.
a)
tornadoes
b)
tsunamis
c)
lightening
d)
hailstorms
12.
The epicenter of an earthquake is
a)
The point below the surface where rock begins to break and the first motion occurs
b)
The seismic station closest to the earthquake
c)
The place where the greatest damage occurs
d)
The point on the surface directly above the focus
13.
Where are the P-waves located on this seismogram?
a)
A
b)
B
c)
C
d)
D
14.
Where are the S-waves located on this seismogram?
a)
A
b)
B
c)
C
d)
D
15.
Where is the epicenter located?
a)
A
b)
B
c)
C
d)
There is no epicenter
16.
Where is the focus located?
a)
A
b)
B
c)
C
d)
There is no focus
17.
Which type of seismic waves are the slowest?
a)
S-waves
b)
P-waves
c)
Surface waves
d)
Primary waves
18.
What type of wave are the BLUE waves? (orange circle is the core)
a)
P-waves
b)
S-waves
c)
Love waves
d)
Raleigh waves
19.
___ waves are the first and fastest seismic waves.
a)
Surface waves
b)
S waves
c)
P waves
20.
Earthquakes are caused by the release of stored energy along a fault.
a)
True
b)
False
21.
Where is the epicenter for this earthquake located based on triangulation?
a)
A
b)
B
c)
C
d)
D
22.
This area is responsible for 90% of all earthquakes in the world and contains numerous faults:
a)
Indian Ocean
b)
English Canal
c)
The Ring of Fire
d)
Mid-Atlantic Ridge
23.
Which letter represents the movement created by the P Wave?
a)
A
b)
B
c)
C
24.
What is the lag time?
a)
30 sec
b)
86 sec
c)
56 sec
d)
140 sec
25.
Which seismogram represents a city that is far from the epicenter of an earthquake?
a)
New York, NY
b)
Nome, Alaska
c)
Guadalajara, Mexico
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