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This
earth
history
timeline
activity
relates
events
in
the
geologic
past
to
distances
measured
on
a
piece
of
adding
machine
tape.
Further
activities
are
used
to
help
the
students
visualize
the
sequence
and
spacing
of
the
events.
The
site
also
contains
numerous
and
varied
links
that
will
aid
both
the
teacher
and
students
in
performing
this
activity.
These
links
lead
to
detailed
information
on
the
stratigraphy,
...
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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
lesson
develops
the
idea
that
carbon
dating
is
based
on
gathering
evidence
in
the
present
and
extrapolating
it
to
the
past.
Students
will
use
a
simple
graph
to
extrapolate
data
to
its
starting
point.
This
lesson
is
the
third
in
a
three-part
series
about
the
nucleus,
isotopes,
and
radioactive
decay.
Students
will
be
asked
to
consider
the
case
of
when
Frosty
the
Snowman
met
his
demise
(began
to
...
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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 resource is referenced by :
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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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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:
National Science Education Standards (NSES): Read
Related resources and collections
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This handout lists major events in Earth history with approximate ages (in millions of years before present). The calendar date is determined by setting midnight, January 1, to correspond with the formation of the Earth, and setting the following midnight, December 31, to correspond to the present. Thus, the entire history of the Earth is displayed as a single calendar year.
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
Related resources and collections
This resource is part of :
Demonstrations of Geophysical Principles Applicable to the Properties and Processes of the Earth's Interior -
http:/
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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
Related resources and collections
This resource is included in the following collections:
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This
time
scale
allows
students
to
select
multiple
time
periods
from
a
list
and
view
them
on
a
highlighted
display.
It
shows
the
relationship
between
eon,
era,
period,
sub-period,
and
epoch
and
also
includes
the
date
in
mega-annum
(Ma)
or
millions
of
years
before
present.
The
scale
reflects
the
changes
in
the
Cenozoic
Era
(Tertiary
and
Quaternary
have
been
eliminated
and
the
Neogene
modified)
in
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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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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This
broadcast
describes
the
four
great
Eons
of
history:
the
Hadean,
the
Archean,
the
Proterozoic
and
the
Phanerozoic.
Together,
they
encompass
four
and
a
half
billion
years.
How
can
we
begin
to
make
sense
of
such
a
huge
swathe
of
time?
And
can
we
be
sure
that
we
have
got
the
age
of
the
Earth
right?
Geologists
use
Eras,
Periods
and
Epochs
to
further
punctuate
what
is
known
as
Deep
Time,
but
can
we
...
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This
is
the
geological
time
scale
developed
by
the
British
Geological
Survey.
The
principal
chart
is
the
Phanerozoic
(Cambrian
to
Quaternary)
timescale.
The
names
of
the
individual
periods
are
live
links,
each
one
leading
to
a
chart
showing
the
subdivisions
of
each
period
into
epochs
and
ages.
The
Proterozoic
and
Neoproterozoic
sections
are
also
linked
to
further
subdivisions
into
eras
and
periods.
...
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