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This
USGS
report
presents
an
overview
of
the
interactions
between
ground
water
and
surface
water
in
a
variety
of
terrains.
It
serves
as
a
general
educational
document
with
the
intention
of
helping
agencies
understand
the
basic
science
involved
in
the
management
and
protection
of
aquifers
and
watersheds.
The
report
describes
the
natural
processes
of
ground
water
and
surface
water
interactions
and
the
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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 page has several animated cross sections which illustrate common structural models. The animations illustrate the development of fault bend folds, duplexes, fault propagation folds, and normal faults.
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This
link
takes
you
to
the
download
page
for
Tanya
Atwater's
plate
tectonics
animations.
Users
must
register
before
using
the
site,
but
it
is
free
of
charge.
The
site
contains
a
series
of
QuickTime
movies
illustrates
the
movement
and
tectonic
history
of
the
Pacific-North
America
plate
from
85
million
years
ago
to
present.
The
movies
show
the
tectonic
evolution
of
California,
evolution
of
the
San
Andreas
...
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This
site
features
34
short
animations
about
various
earth
science
topics.
Animations
are
divided
into
six
categories
including
the
earth
in
space,
earth
materials,
tectonic
activity,
geologic
history
and
time,
earth
resources,
and
processes
and
problems
at
Earth's
surface.
Topics
range
broadly
and
include
everything
from
the
formation
of
the
solar
system
to
sea
floor
spreading
to
mineral
growth
to
...
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Choosing & Using this resource...
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This resource is part of :
Teaching Geoscience with Visualizations -
http:/
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Part
of
the
supporting
resources
for
the
School
of
Earth
Sciences
dynamic
earth
module,
the
-Why
Topography?-
site
discusses
two
models
introduced
in
the
19th
century
that
are
still
used
to
explain
topographic
variations.
These
models
are
the
Pratt
and
Airy
models
of
isostasy.
In
the
Pratt
model,
high
topography
(relative
to
surroundings)
is
due
to
lower
density
whereas
in
the
Airy
model,
high
topography
...
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This
Flash
animated
slide
show
illustrates
the
development
of
a
waterfall
by
demonstrating
the
way
that
soft
rocks
are
more
quickly
eroded
downstream
than
hard
rocks.
The
animation
also
reveals
the
way
rapids,
steep
backwalls,
plunge
pools,
overhangs,
and
gorges
develop
as
well
as
the
way
waterfalls
retreat
up
stream.
The
user
can
navigate
backwards
and
forwards
within
the
slide
show.
This
is
one
...
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This
site
features
a
narrated
QuickTime
animation
of
graded
streams.
It
discusses
relationships
between
stream
water
level
and
high
and
low
water
velocity,
erosion,
bedload
transport,
deposition
and
floods.
This
visualization
is
from
Chapter
17
(Fluvial
Processes
and
Landforms)
of
the
animations
section
of
the
Instructor
Companion
Site
for
the
Wiley
Higher
Education
textbook
(ISBN
0-471-23800-7)
Physical
...
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This
Flash
animated
slide
show
with
accompanying
audio
illustrates
the
evolution
of
an
alpine
environment
from
a
fluvial
V
shaped
valley
landscape
to
a
glaciated
U
shaped
valley
landscape.
It
also
shows
the
advance
and
regression
of
glaciers
and
the
reestablishment
of
post
glacial
streams
and
hanging
valleys.
This
visualization
is
from
Chapter
20
(Glacier
Systems
and
the
Ice
Age)
of
the
animations
...
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This
interactive
Flash
animation
of
a
dune
triangle
allows
users
to
click
on
a
dune
type
and
see
a
related
image
with
accompanying
descriptive
text.
The
three
parameters
of
the
dune
type
triangle
are
sand,
wind,
and
vegetation.
The
demonstrated
dune
types
are
longitudal,
crescent
(barchan),
transverse,
star,
and
parabolic.
This
visualization
is
from
Chapter
19
(The
Work
of
Waves
and
Wind)
of
the
animations
...
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This
site
has
links
to
two
Flash
animations.
Evolution
of
Basin
and
Range
Landforms
demonstrates
fault
movement
and
subsequent
sediment
erosion
and
deposition
that
create
mountains
and
valleys.
Formation
of
a
Sand
Dune
illustrates
sand
grain
erosion,
transport,
and
deposition
from
the
windward
to
leeward
side
of
a
dune.
These
visualizations
are
from
Chapter
13
(Deserts
and
Wind
Action)
of
the
animations
...
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