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This
site
contains
information
about
discoveries
made
after
World
War
II
when
ocean-going
geologists
adapted
sensitive
magnetometers
developed
for
antisubmarine
warfare
for
use
in
seafloor
research.
This
modern
technology
gave
geologists
their
greatest
boost
in
more
than
a
century
of
field
work
and
led
to
the
idea
of
sea
floor
spreading.
This
site
has
animations
showing
sea-floor
spreading
and
a
magnetometer
...
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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)
Related resources and collections
This resource is part of :
North Cascades Geology: The Basic Pattern Emerges -
http:/
This resource is included in the following collections:
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This
report
describes
how
measurements
of
earthquake
magnitude,
as
quantified
by
the
Richter
Scale,
have
gradually
replaced
measurements
of
intensity,
as
characterized
by
the
Modified
Mercalli
scale.
Topics
include
the
advantages
of
the
Richter
Scale,
such
as
open-endedness,
its
purely
instrumental
measure
which
doesn't
require
observers'
reports,
and
its
usefulness
for
measuring
earthquakes
located
...
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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)
Related resources and collections
This resource is part of :
SCEC Education Module: Investigating Earthquakes through Regional Seismicity -
http:/
This resource is included in the following collections:
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