Chapter 8 Earthquakes
Card #
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Question
What is a fracture in the earth
where movement has occurred?
The place on the earth’s surface
directly above the focus is called
the _____.
When an earthquake occurs,
energy radiates in all directions
from it’s _____________ or
where it started.
Earthquakes are usually
associated with what?
What causes an
earthquake?
6.
The hypothesis that explains the
release of energy during an
earth quake is called?
7.
The rapid release of ___ energy
stored in rocks causes most
earthquakes
8.
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12.
Smaller earthquakes that
happen after a major one
is called a ___________
which is an adjustment of
materials on/in earth.
Smaller earthquakes that
precede (come before) a major
one is called?
Foreshocks can precede a major
earthquake
Which seismic waves travel
most rapidly (the fastest)?
Which seismic waves are the
most destructive?
13.
An earthquakes magnitude
(how big it is) is measured by
its?
14.
The magnitude scale used by
scientists to measure
earthquakes is the_____ scale
NOT the Richter scale.
This instrument records the
earthquake waves
15.
16.
The amount of shaking caused
by an earthquake is called
___________.
17.
The record of an earthquake is
called is called a ----.
18.
If an earthquake wave is a 4.5
then compared to a wave that’s
5.5…we’d say that’s how many
times greater?
The design of a structure,
intensity & duration of
vibrations, and the nature of the
material a structure was built on
all affect what?
These are often started by
underwater movements (or
earthquakes)
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25.
What are tsunamis?
When there is unconsolidated
(loose) materials that get saturated
with water, an earthquake can turn
that stable ground into a fluid
through the process of ?
Violent shaking from an
earthquake can cause
rocks & soil to fall down
slope causing a ?
Earthquakes can cause
fires…how?
What is the earth’s core made
of?
26.
Be able to locate the crust,
mantle, and core on a diagram
of the Earth’s interior
27.
What is the earth’s crust?
28.
Where are tsunami warnings
systems located?
29.
What is a seismic gap?
30.
To change from a liquid to a gas
is called