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This
activity
focuses
on
indirect
evidence,
based
on
earthquake
waves,
for
the
internal
structure
of
the
Earth.
Students
are
asked
to
use
their
prior
knowledge
of
the
properties
of
seismic
waves
to
interpret
a
graph
showing
how
the
velocities
of
P-waves
and
S-waves
change
with
depth
in
the
Earth.
The
distinctive
behaviors
of
these
waves
serve
as
evidence
that
the
outer
core
does
not
behave
like
a
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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This is one of a series of six lectures covering earthquakes and related topics in seismology. They are part of the course, Geology 101 (Physical Geology). The page includes short descriptions and illustrations of key concepts.
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The
Waves
Through
the
Earth
JAVA
activity
allows
students
to
vary
the
seismic
P
and
S
wave
velocity
through
each
of
4
concentric
regions
of
Earth.
Students
match
fabricated
data
for
travel
times
versus
angular
distance
around
Earth's
surface
from
the
source
to
detector.
Tables
are
available
for
P
and
S
rays
superimposed
on
the
4-region
model.
Tables
of
data
for
P
and
S
wave
velocities,
graphs
of
fabricated
...
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This
resource
explores
earthquakes
and
seismic
hazards,
using
the
San
Francisco
area
as
an
example.
Materials
include
histories
of
San
Francisco's
earthquakes,
including
the
1906
'Great
Earthquake'
and
the
1989
Loma
Prieta
quake.
A
section
on
quake
basics
addresses
the
relationship
between
earthquakes
and
plate
tectonics,
fault
movements,
seismic
waves,
and
how
earthquakes
are
measured.
For
educators,
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Examples of use
Read (1)
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This
site
is
the
homepage
of
Alan
L.
Jones,
of
the
State
University
of
New
York
at
Binghamton.
Dr.
Jones
is
interested
in
most
earthquake-related
topics,
computer
graphics,
and
computers
in
education.
He
has
created
various
computer-based
visualizations:
Seismic/
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This
activity
requires
students
to
read
an
article
about
earthquakes
and
nuclear
explosions
and
answer
questions
about
it.
They
discover
that
both
earthquakes
and
nuclear
explosions
generate
seismic
waves
that
can
be
detected
thousands
of
kilometers
away
and
from
the
1960s
to
the
1990s
about
one
underground
nuclear
explosion
was
carried
out
each
week.
Students
learn
that
this
was
how
nations
tested
...
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This
lesson
introduces
students
to
a
real-world
application
in
which
seismic
waves
are
used
to
reveal
the
shallow
structure
of
the
Earth.
Students
will
explore
the
concepts
of
reflected
and
refracted
seismic
waves
and
examine
how
refracted
waves
may
be
used
to
determine
Earth
structure.
An
activity
in
which
the
students
investigate
what
is
beneath
the
surface
of
a
playground
before
the
construction
...
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The
Wave
Superposition
exercise
is
an
interactive
JAVA
environment
that
allows
the
user
to
look
at
the
linear
superposition
of
up
to
four
ocean
waves
of
different
amplitudes
and
period.
Direction
of
travel
(right
or
left)
and
the
local
depth
of
water
can
be
specified.
Students
can
learn
definitions
of
wavelength,
wave
speed,
wave
amplitude,
and
wave
period
and
gain
an
overall
understanding
of
the
...
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In
this
activity,
students
use
simple
calculations
of
the
travel
times
of
seismic
waves
in
a
constant
velocity
spherical
Earth
and
compare
these
with
observations
for
the
real
Earth.
They
find
that
the
Earth's
interior
is
not
homogeneous.
The
exercise
provides
suggestions
about
the
actual
nature
of
the
Earth's
interior
structure.
This
activity
will
provide
experience
with
graphing,
calculations
and
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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This resource is referenced by :
Explorations in Earth Science: Earth Science Education Demonstrations, Lessons and Activities -
http:/
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This
web
site
provides
a
brief
introduction
to
the
process
of
seismic
exploration.
Included
are
a
definition
of
seismic
exploration,
a
listing
of
possible
applications
of
seismic
methods,
definitions
of
seismic
reflection
and
refraction,
and
an
explanation
of
data
processing
with
seismic
methods.
The
text
descriptions
are
accompanied
by
visualizations
helping
to
aid
the
reader
in
their
understanding
...
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