Unit3 Volcanoes & Earthquakes
Section # _____
Name ___________________________________
1. ______________________ are cracks in the Earth’s crust.
2. There is a fault line that runs through ____________________. (diagram)
Volcanoes
Lesson 3.3 (p. 150)
3.
Causes
a. an __________________ in the Earth’s crust
b. molten ________________pushing up through Earth's surface.
5.
an outpouring of melted rock, ash, gases, or a
combination of these
melted rock UNDER the surface of the Earth.
Once it reaches the Earth’s surface, it is called
_________.
6.
an opening in the volcano
7.
a volcano that is no longer active and will never
erupt again
8.
a volcano that was once active and will be again
9. a. Volcanoes form on ___________________ and the _____________
floor (80%
are under water)
b. Volcanoes are most likely to erupt at ____________ boundaries
c. The Ring of Fire is a ___________ of volcanoes located around the
______________ Ocean.
10.
a. A __________________ is a tool that measure small changes in the
tilt of the Earth’s surface.
b. This data allows scientists to _________________ where lava and ash
will go during an eruption.
Predicting &
Preparing
Where
Definitions
4.
Destruction/
Construction
Destructive
11.
 homes
 trees/vegetation
 lives
Constructive
12.
 Volcanoes form _____________
because lava and ash collect over
time.
 Volcanoes form _____________.
(Ex. Hawaiian Islands)
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Unit3 Volcanoes & Earthquakes
Name ___________________________________
Section # _____
13.
a. a sudden movement of the Earth’s _________________ along a
geological fault
b. plates push against each other and slip
c. ________________ is released when crustal plates move
14.
the center point where an
earthquake begins
15.
a measure of the amount of
energy released by an
earthquake
16.
The scale that measures
magnitude
17.
deep cracks in the Earth’s crust
18.
a. occur at _________________ or edges of plates
b. Fault lines
c. Georgia has a minor fault line.
d. Areas of the USA most likely to be affected are Alaska, Oregon,
Washington, & California
Where?
Terms/ Definitions
Causes
Earthquakes
Lesson 4 (p. 162)
Destruction/
Construction
Predicting/
Preparing
19.
a. ____________________ --an instrument used by geologists to record
the motions produced by an earthquake
b. _______________ is difficult.
c. Precautions include using layers of rubber and steel in the foundations
of buildings.
Constructive
Destructive
20.
__________________ are huge waves
produced from the energy from
earthquakes.
21. While we may view
earthquakes as only destructive,
they do _________________
the Earth’s surface.
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