Timeline of Planet Earth
1 Million





1, 000,000
A million seconds = 12 days.
A million minutes = 1 year, 329 days, 10
hours and 40 minutes.
A million hours ago it was 1885
It would take 23 days without sleeping to
count to a million.
1 Billion






1,000,000,000
A billion seconds = 31 years.
A billion hours ago homo sapiens had not
evolved.
A billion kids on each others shoulders would
stretch past the moon.
If you counted from one to one billion, you
would be counting for 95 years.
One thousand million, is a billion.
The Earth is 4.6
Billion years
old.
Directions
Organize into groups of 2-4 people.
 Gather a meter stick and roll of adding
machine tape.
 Measure carefully 5 meters of adding
machine tape from the roll and cut it off.
 Measure 20 cm from one end, draw a line
across and label the line “Today”.
 Add group member names and hour to
that end of the roll, closest to the far end.

Directions
Measure and mark your timeline in 1
meter increments/1 billion year increments
~ starting at the today line.
 Label each 1 meter as 1 billion years. (Be
precise.)


Scale:
1 millimeter =1 million years.
 1 meter = 1 billion years.

Time Divisions

Earth Time is arranged into Eon’s, Era’s &
Periods.

Please measure and label them on your
timeline.

Color each Period a different color, and each
Era a different color as well. Skip the color
coding of the Eon’s. Remember that an Era
crosses over several periods so draw them in
with pencil before coloring.
Adding Events

Now that your Eras & Periods are labeled and colored, begin adding
events into your timeline. Attach the pieces somehow to the
timeline.




Attach to the front?
Attach as flip in from the sides with an x showing specifically where it
belongs.
Measure from the today line, because every thing is measured in
m.y.a. or millions of years ago.
Remember Your
Scale:


Each millimeter =1 million years.
Each meter = 1 billion years.
Making Sense of It All



Once your Events are added, please complete the sheet
titled, “Geologic Time Line” (from the packet).
Discuss the Poster
National Geographic Interactive Timeline:
http://science.nationalgeographic.com/science/p
rehistoric-world/prehistoric-time-line/

You Tube (May be watched while completing.)
Earth: The Making of a Planet
http://www.youtube.com/watch?v=e1F4lxJPo0&list=PL70CAF80E5B6E904D&index=14&feature=plpp
_video
Post Tests

Complete the Post Assignment “Dig in and
See What You Know”

Complete the Post Test (on the same
sheet as the PreTest.
Clickers
1. How many millions are there in a billion?
a.
b.
c.
d.
10
100
1,000
10,000
Clickers
2. How long is 1 billion
years on your
timeline?
a.
b.
c.
d.
1 millimeter
1 centimeter
1 meter
10 meters
Clickers
3. How many years
does 100 cm
represent on your
timeline of planet
Earth?
a.
b.
c.
d.
1 million years
10 million years
1 billion years
10 billion years
Clickers
4. How many years
would 1 cm
represent on your
timeline of planet
Earth?
a.
b.
c.
d.
1 million years
10 million years
100 million years
1 billion years
Clickers
5. Which time period is
the longest?
a.
b.
c.
An Eon
An Era
A Period
Clickers
6. Which time period is
the shortest?
a.
b.
c.
An Eon
An Era
A Period
Clickers
7. Which Era of earth
history is the
longest?
a.
b.
c.
d.
Cenozoic
Mesozoic
Paleozoic
Precambrian
Clickers
8. How old is Earth?
a.
b.
c.
d.
4.6 million years old
4.6 billion years old
4.6 years old
46 years old
Clickers
9. What Era do we now
live in?
a.
b.
c.
d.
Quarternary
Paleozoic
Mesozoic
Cenozoic
Clickers
10. What Period do we
now live in?
a.
b.
c.
d.
Quarternary
Paleozoic
Tertiary
Cenozoic
Clickers
11. In what period do
we find homo
sapiens?
a.
b.
c.
d.
Quarternary
Paleozoic
Tertiary
Cenozoic
Clickers
12. Did ancient
cavemen ever hunt
dinosaurs?
a.
b.
Yes
No
Clickers
13. What Era is known
as the “Age of
Dinosaurs/Reptiles?”
a.
b.
c.
d.
Precambrian
Cambrian
Quarternary
Mesozoic
Clickers
14. What was the first
life form to evolve on
planet Earth?
a.
b.
c.
d.
Humans
Bacteria
Sponges
Plants
Clickers
15. A geologic era is
generally marked
by?
a.
b.
c.
d.
A mass extinction
An ice age
Pangaea breaking
into continents
A new species
evolving
Clickers
16. On the geologic time
scale, eras are
divided into.
a.
b.
c.
d.
Epochs
Indexes
Periods
Relative dates
Clickers
17. The Mesozoic era is
often called the
________________.
a. Age of Mammals
b.
Age of Dinosaurs
c.
Age of Amphibians
d.
Age of Fishes
Clickers
18. Comparing the age
of one rock to the
other rocks that are
found around it is
called.
a.
b.
c.
d.
Absolute dating
Relative dating
Carbon dating
Online dating
Clickers
19. Fossil evidence exists showing that various
organisms once occurred on landmasses that are
now far apart suggests that
a.
b.
c.
d.
The organisms were really good swimmers.
The landmasses were once together, and have
moved.
Similar organisms coincidentally evolved in very
different areas
Volcanic rock has transported those fossils to very
different parts of the world.
Clickers
20. Most fossils are
found in
______________
rock.
A.
B.
C.
D.
igneous
cemetery
sedimentary
metamorphic
Music Video’s
Darwins Revolution
http://www.youtube.com/watc
h?v=UuZTqLW_MN4&fe
ature=related
Symphony of ScienceGreatest Show on Earth
http://www.youtube.com/watc
h?feature=player_embed
ded&v=wxDOpAM2FrQ
Unbroken Thread
http://www.youtube.com/watc
h?v=hOLAGYmUQV0&fe
ature=player_embedded
Post Test
Clickers
1. How old is Earth?
a.
b.
c.
d.
4.6 million years old
4.6 billion years old
4.6 years old
46 years old
Clickers
2. What Era do we now
live in?
a.
b.
c.
d.
Quarternary
Paleozoic
Mesozoic
Cenozoic
Clickers
3. What Period do we
now live in?
a.
b.
c.
d.
Quarternary
Paleozoic
Mesozoic
Cenozoic
Clickers
4. What Era is known as
the “Age of
Dinosaurs/Reptiles?”
a.
b.
c.
d.
Precambrian
Cambrian
Quarternary
Mesozoic
Clickers
5. What was the first life
form to evolve on
planet Earth?
a.
b.
c.
d.
Humans
Bacteria
Sponges
Plants
Clickers
6. A geologic era is
generally marked
by?
a.
b.
c.
d.
A mass extinction
An ice age
Pangaea breaking
into continents
A new species
evolving
Clickers
7. On the geologic time
scale, eras are
divided into.
a.
b.
c.
d.
Epochs
Indexes
Periods
Relative dates
Clickers
8. Comparing the age of
one rock to the other
rocks that are found
around it is called.
a.
b.
c.
d.
Absolute dating
Relative dating
Carbon dating
Online dating
Clickers
9. Fossil evidence exists showing that various
organisms once occurred on landmasses that are
now far apart suggests that
a.
b.
c.
d.
The organisms were really good swimmers.
The landmasses were once together, and have
moved.
Similar organisms coincidentally evolved in very
different areas
Volcanic rock has transported those fossils to very
different parts of the world.
Clickers
10. Which Era of earth
history is the
longest?
a.
b.
c.
d.
Cenozoic
Mesozoic
Paleozoic
Precambrian
Clickers
11. Did ancient
cavemen ever hunt
dinosaurs?
a.
b.
Yes
No