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The rings on a tree tell a tale - each ring holds clues about that particular year. This radio broadcast reports on an archaeologist who is using the rings to date events in ancient history. This method produces an unconventional date for the Thera volcano eruption, which may cause a rewriting of Mediterranean history. The clip is 2 minutes in length.
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Choosing & Using this resource...
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This
Flash
animation
provides
a
tour
of
the
history
of
the
universe,
the
solar
system,
and
Earth.
Moving
the
slider
allows
viewers
to
progress
from
the
Big
Bang,
almost
14
billion
years
ago,
to
the
beginnings
of
life
on
Earth
in
the
Proterozoic
era,
through
the
age
of
the
dinosaurs
and
finally
to
the
time
of
Homo
sapiens.
When
the
slider
stops
moving,
animations
and
text
appear,
highlighting
important
...
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This
project
aims
to
reconcile
the
international
stratigraphic
standards
with
many
of
the
regional
and
archaic
naming
schemes
that
appear
in
the
literature.
In
the
process,
the
most
recent
International
Commission
on
Stratigraphy
(ICS)
time
scale
has
been
combined
with
information
on
the
estimated
placement
and
length
of
other
stages
in
order
to
put
approximate
dates
on
all
of
the
stratigraphic
intervals
...
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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
activity
has
students
compare
the
magnitude
of
geologic
time
with
spans
of
time
in
a
person's
lifetime,
which
is
often
difficult
for
many
students.
They
use
a
long
paper
strip
and
a
reasonable
scale
to
represent
visually
all
of
geologic
time,
including
significant
events
in
the
development
of
life
on
earth
as
well
as
recent
human
events.
This
activity
provides
students
with
an
opportunity
to
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Pedagogical help
Assessments:
Read (1)
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In
this
lesson
students
will
experience
how
geological
and
biological
events
have
occurred
in
a
clear
sequence
of
vast
but
measured
time.
Students
are
taken
on
a
simulated
voyage
backward
in
time,
to
the
beginning
of
our
planet.
They
witness
that
beginning,
the
origin
of
life,
and
a
number
of
key
events
leading
to
the
present.
This
becomes
a
dramatic
experience,
involving
body
and
mind,
helping
students
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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In
this
activity,
students
are
introduced
to
sequencing
and
geologic
time
through
relative
dating
techniques.
Students
begin
by
categorizing
cards
of
nonsense
words,
then
move
on
to
cards
with
pictures
of
fossils.
Once
students
begin
to
grasp
"relative"
dating,
they
can
extend
their
knowledge
of
geologic
time
by
exploring
radiometric
dating
and
developing
a
timeline
of
Earth's
history.
There
is
a
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Comments and Teaching Tips
Read (1)
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This
lesson
shows
students
that
age-dating
rocks
involves
counting
atoms
and
comparing
the
counts.
Students
use
simulated
rock
samples,
which
show
a
highly
magnified
selection
of
128
atoms,
each
sample
with
a
different
proportion
of
the
atoms
of
two
different
elements:
a
parent
radioisotope,
and
its
daughter
product.
By
counting
the
parent
radioactive
atoms
and
knowing
the
half-life
of
those
atoms,
...
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Pedagogical help
Misconceptions:
Read (1)
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This
time
line
lays
out
Earth's
history
within
a
24-hour
time
period,
from
Earth's
formation
out
of
stellar
dust
up
to
the
last
Ice
Age.
Elementary,
middle
and
even
high
school
students
will
be
surprised
to
discover
that
the
most
familiar
human
history
is
not
even
on
the
time
line
because
it
took
place
in
the
final
second.
The
time
line
illustrates
that
if
earths
history
had
unfolded
on
one
single
...
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Choosing & Using this resource...
Educational standards associated with this resource:
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This
is
an
interactive
exercise
about
Geologic
Time.
It
focuses
on
how
geologists
and
archaeologists
determine
the
ages
of
rocks
and
ancient
artifacts.
This
is
a
beta
release
of
an
instructional
activity
still
under
development.
Virtual
Dating
contains
two
modules
as
well
as
a
demonstration
version.
One
module
is
Virtual
Dating
Isochron
for
rocks
and
minerals
and
the
other
is
Virtual
Dating
Radiocarbon
...
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Choosing & Using this resource...
Comments and Teaching Tips
Read (7)
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This
page
examines
the
issues
involved
in
teaching
students
about
the
geologic
time
scale.
There
are
suggestions
for
tackling
troublesome
issues
in
class
as
well
as
activities
that
can
be
used
to
clarify
how
geoscientists
look
at
deep
time.
Five
main
concepts
with
which
students
struggle
when
thinking
about
Deep
Time
are
addressed
here:
imagining
or
comprehending
big
numbers;
the
difference
between
...
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