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This
USGS
site
contains
graphs,
tables,
and
charts
for
the
following
ground
water
topics:
What
is
ground
water,
ground
water
flow
diagrams,
importance
of
groundwater,
and
trends
in
ground-water
use.
Ground
water
quality,
pesticides,
aquifers,
waterwells,
artesian
wells,
sinkholes,
and
land
subsidence
are
also
covered.
There
are
a
variety
of
links
within
all
of
the
above
topics
and
a
very
complete
...
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This
booklet
provides
a
brief
introduction
to
the
concept
of
plate
tectonics
and
complements
the
visual
and
written
information
in
This
Dynamic
Planet,
a
map
published
in
1994
by
the
U.S.
Geological
Survey
(USGS)
and
the
Smithsonian
Institution.
The
booklet
highlights
some
of
the
people
and
discoveries
that
advanced
the
development
of
the
theory
and
traces
its
progress
since
its
proposal.
Although
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES), National Geography Standards: Read
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The
Antarctic
ice
sheet
changes
in
size
over
the
course
of
a
year.
When
it
is
summer
in
the
southern
hemisphere,
the
ice
sheet
decreases
in
size.
As
the
ice
sheet
melts,
it
releases
fresh
water
into
the
ocean.
In
the
southern
winter
(our
summer),
the
ice
refreezes,
drawing
fresh
water
out
of
the
surrounding
ocean,
leaving
the
salt
behind.
These
seasonal
changes
in
the
ice
sheet
are
examined
in
this
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES), National Geography Standards: Read
Comments and Teaching Tips
Read (1)
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Relevant
sections
in
this
resource
include
What
are
Harmful
Algal
Blooms
(HABs),
an
Introduction
to
Algal
Blooms
and
"Red
Tide",
Algae
Species
(which
algae
are
responsible
for
the
harmful
effects?),
Adverse
Impacts,
Human
Illness
(food
poisoning
associated
with
harmful
algal
blooms
&
information
on
diagnosis
and
treatment),
HAB
Distribution
Maps,
HAB
events
in
the
United
States
and
around
the
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES), National Geography Standards: Read
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The
National
Weather
Service
provides
weather
and
marine
data
from
buoys
surrounding
North
America,
the
Carribean,
and
Great
Britain.
Historical
and
realtime
data
are
featured.
Data
include
wind,
waves,
atmospheric
pressure,
air
and
water
temperature,
and
dewpoint.
Frequently
Asked
Questions
explain
how
the
marine
stations
collect
and
transmit
data,
how
quality
is
assured,
and
how
the
National
Data
...
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