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WorksheetsEarthquakes and Volcanoes
Total questions: 26
Worksheet time: 51mins
Name
Class
Date
1.
What are the fastest body waves
a)
P waves
b)
T waves
c)
S waves
d)
Q waves
2.
Earthquakes generally happen at plate boundaries, where
a)
Stress is greatest
b)
Stress is the lowest
c)
where rocks are
d)
where there is magnetic pull
3.
To find the distance to an earthquake's epicenter, scientists must do what?
a)
use radio waves to detect movement
b)
Find the difference in P and S waves
c)
Find the difference in Rayleigh and Love waves
d)
No Clue
4.
If you are indoors during an earthquake, you should
a)
Get away from windows and get under desk
b)
Climb on top of your desk
c)
Scream and Panic
d)
Get outside as fast as you can
5.
During a major earthquake, buildings
a)
always remain standing.
b)
Do not move
c)
May sway or fall
d)
Never Fall
6.
At what location does the first motion of an earthquake occur?
a)
Focus
b)
Epicenter
c)
Mantle
d)
Seismic Gap
7.
If the temperature of rock rises above the melting point of the minerals the rock is composed of
a)
the melting point of rock decreases
b)
the melting point of rock increases.
c)
The minerals will evaporate.
d)
the rock will melt.
8.
Which of the following is NOT a major volcanic area?
a)
boundaries of tectonic plates
b)
mid-ocean ridges
c)
subduction zones
d)
central continental plains
9.
What forms on the ocean floor in a subduction zone?
a)
hot spot
b)
mantle plume
c)
lithosphere
d)
trench
10.
Composite volcanoes are also known as
a)
stratovolcanoes.
b)
cinder cones.
c)
craters.
d)
shield volcanoes.
11.
The 1980 eruption of Mount St. Helens was
a)
an oceanic volcano.
b)
a quiet eruption.
c)
an explosive eruption.
d)
a stratovolcano.
12.
Which of the following island is cut into two parts by a fissure?
a)
Japan
b)
Hawaii
c)
Iceland
d)
Grand Cayman
13.
When lava cools rapidly, a crust forms on the surface of the flow. If the flow continues, the crusted-over surface wrinkles and forms volcanic rock known as
a)
aa.
b)
pahoehoe.
c)
blocky lava.
d)
lapilli
14.
Rayleigh waves cause the ground to move
a)
in a horizontal direction.
b)
in a back-and-forth direction.
c)
in a jerky, up-and-down motion.
d)
in an elliptical, rolling motion.
15.
On the modified Mercalli scale, how is intensity XII described
a)
felt by only a few people indoors
b)
causes light to moderate damage
c)
causes damage to ordinary buildings
d)
causes total destruction
16.
P waves are also known as
a)
secondary waves.
b)
compression waves.
c)
Love waves.
d)
Rayleigh waves.
17.
What is the epicenter of an earthquake?
a)
the location along a fault where the first motion of an earthquake occurs
b)
a seismic wave that travels along the surface of Earth
c)
the point on Earth’s surface directly above the earthquake’s focus
d)
the last place that motion in an earthquake is detected
18.
Which of the following are studied to forecast earthquakes?
a)
movements of the planets, bird migration, air temperature
b)
barometric pressure, ocean currents, glacial patterns
c)
animal behavior, environmental changes, weather patterns
d)
seismic gaps, foreshocks, rock changes
19.
To locate the epicenter of earthquakes, scientists use computers to
a)
analyze hypotheses and theories.
b)
perform triangulations based on data from seismograph stations.
c)
detect vibrations.
d)
determine magnitude and intensity.
20.
When an underwater volcano erupts, the magma cools quickly, forming
a)
pillow lava.
b)
island arcs.
c)
fissures.
d)
vents.
21.
Magma that is rich in feldspar and silica is called
a)
pyroclastic.
b)
mafic.
c)
felsic.
d)
composite.
22.
Pyroclastic material less than 0.25 mm in diameter is called
a)
a volcanic bomb.
b)
a volcanic block.
c)
volcanic rock
d)
volcanic dust.
23.
Volcanic eruptions may be signaled by
a)
a change in earthquake activity.
b)
a sudden weather change.
c)
a change in wildlife behavior.
d)
volcanic dust in the air.
24.
Which of the following is NOT a major type of volcanic cone?
a)
cinder cone
b)
composite
c)
shield
d)
mantle plume
25.
Any activity that includes the movement of magna to Earth’s surface is called
a)
a vent.
b)
a volcano.
c)
volcanism.
d)
lava
26.
An area of volcanic activity far from a tectonic plate boundary is called a(n)
a)
hot spot.
b)
cone.
c)
island arc.
d)
mantle plume
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