Eons, eras, Periods and Epochs
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Transcript of Eons, eras, Periods and Epochs
Eons, eras, Periods and
Epochs
POSTER #1
Solve the problem above then locate the poster with the correct answer in the upper right corner.
Stacking pennies with the oldest on the bottom, and the youngest on the top
demonstrates which law concerning rock layers?
The Fossil Record
POSTER #2
Looking at the bottom layer of this rock, what can you conclude about the land at the time?
The rock was once dry land before it was covered by
water.
POSTER #4
Look at the picture carefully, what principle is demonstrated by this picture?
The Geologic Time Line
POSTER #5
If a fossil of a land dwelling animal is found beneath a fossil of a water dwelling animal, what can you conclude about the rock in its
past?
The organisms found in the rock layers are marine animals, this rock was once covered with water.
POSTER #7
The main divisions of the Geologic Time Scale.
Meteor impact or climate change
POSTER #9
What evidence have scientists found that tells of a mass
extinction?
They have grown more
complex
POSTER #13
What Principle states that geologic process have not changed over the years?
Original HorizontalityPOSTER
#15
Why don’t scientist use years and decades to measure the
Earth’s history?.
Poster #18
A mass extinction of the dominant
organism found on earth at the time.
The __________ _______ _______ is a record of the life forms and geologic events in Earth’s history..