|
In
this
activity
students
learn
about
Earth's
magnetic
reversals
by
reading
two
fiction
stories
and
a
scientific
summary
of
past
reversals,
including
graphical
information.
This
will
help
students
discriminate
between
factual
and
fictional
descriptions
of
a
natural
phenomenon,
which
has
been
scientifically
studied
from
the
fossil
and
geologic
record
of
Earth,
and
found
to
be
a
lot
less
frightening
...
|
|
|
|
|
Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Related resources and collections
This resource is included in the following collections:
|
||||
|
The
Earth
hums,
emitting
a
tone
too
low
for
human
ears
to
detect.
Geophysicists
have
finally
located
the
source
of
the
noise.
As
this
radio
broadcast
reports,
it
comes
from
the
largest
oceans
during
winter,
apparently
the
result
of
powerful
winter
storms.
The
hum
comes
from
the
surface
of
the
Earth
rising
and
falling
less
than
a
millionth
of
a
meter,
vibrating
once
per
300
seconds.
The
clip
is
3
minutes
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||
|
This
is
the
homepage
of
the
Marine
Seismic
Data
Center
(MSDC)
of
the
University
of
Texas
Institute
for
Geophysics
(UTIG).
MSDC's
purpose
is
to
organize
seismic
reflection
and
refraction
data
into
a
modern
relational
database
management
system
accessible
through
the
Internet.
The
web
site
provides
access
to
metadata,
SEG-Y
(seismic
shot
record
conversion)
files,
navigation
files,
seismic
profile
images,
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||
|
This set of animations, accompanied by an audio narrative, shows the four types of wave motion seen in an earthquake: P waves, S waves, Love waves, and Rayleigh waves. A brief written narrative and a set of study questions are also included.
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||
|
This
tutorial
provides
information
on
the
four
types
of
wave
motion
seen
in
earthquakes
(S,
P,
Love,
and
Rayleigh
waves).
A
table
accompanied
by
text
describes
their
particle
motion,
typical
veolcity,
and
other
characteristics.
The
four
animations
show
a
rectangular
block
of
material
with
outlined
with
grid
lines
and
a
filled-in
grid
square
to
highlight
the
particle
motion
and
direction
of
propagation.
...
|
|
|
|
|
Choosing & Using this resource...
Examples of use
Read (1)
Related resources and collections
This resource is included in the following collections:
|
||||||
|
In
this
exercise,
students
will
use
two
shake
intensity
maps
with
Modified
Mercalli
Intensity
values,
one
of
the
New
Madrid
Earthquake
and
the
other
of
Southern
California,
to
determine
the
location
of
earthquake
epicenters.
They
will
draw
curves
that
enclose
areas
of
similar
intensity
(as
given
by
the
numerical
values
representing
the
reports
of
witnesses),
look
for
patterns
or
closures
in
the
isoseismal
...
|
|
|
|
|
Choosing & Using this resource...
Examples of use
Read (1)
Related resources and collections
This resource is included in the following collections:
|
||||||
|
This
tutorial
introduces
students
to
geomagnetism,
the
Earth's
magnetic
field,
and
its
changes
through
time
and
space.
Topics
include
the
properties
of
Earth's
magnetic
field,
how
it
makes
a
compass
work,
and
why
Earth
has
a
magnetic
field.
There
is
also
discussion
of
magnetic
reversals,
a
set
of
links
to
additional
reading
and
resources,
and
a
set
of
classroom
activities
on
the
basic
properties
of
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||
|
This
site
provides
access
to
near
real-time
data
on
the
Earth's
magnetic
field
available
at
14
United
States
Geological
Survey
(USGS)
observatories
across
the
world.
The
data
includes
fluxgate
sensor
measurements
(H,
D,
Z,
or
intensity
and
declination)
specifications
and
proton
magnetometer
data
(F,
or
strength),
and
are
available
with
a
12-24
minute
delay.
The
data
are
'preliminary'
in
nature,
meaning
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is included in the following collections:
|
||||
|
This
lesson
provides
a
good
example
of
how
models
change
over
time
as
our
understanding
of
the
Earth
system
improves
with
more
detailed
observations.
Students
work
in
teams
to
investigate
two
possible
models
of
the
Earth,
a
simple,
homogeneous
interior
and
a
layered
Earth.
They
will
use
calculations
and
create
a
graph
from
data
gathered
from
a
model
of
Earth?s
interior
and
using
data
from
the
Rapid
...
|
|
|
|
|
Choosing & Using this resource...
Related resources and collections
This resource is part of :
This resource is included in the following collections:
|
||||
|
In this activity, students construct a model of the Earth's interior to help them visualize its main regions (inner core, outer core, mantle, crust). They will also calculate the volumes of each region.
|
|
|
|
|
Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Related resources and collections
This resource is referenced by :
Explorations in Earth Science: Earth Science Education Demonstrations, Lessons and Activities -
http:/
This resource is included in the following collections:
|
||||||
