Transcript geologic time

Geologic Time
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Activity 3: Geologic Time
Get
Started
Sketch this timeline in your science
notebook:
Activity 3: Geologic Time
Get
Started
Label on your timeline where you
think the following events occurred:
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First cells preserved in the fossil record
Dinosaurs became extinct.
“Ardi,” a skeleton observed in the fossil
record, who lived in Ethiopia.
Activity 3: Geologic Time
Introduction
Read the Introduction.

Deep time or geologic time is the vast
time scale of billions of years, related to
the geological and evolutionary history of
the earth.
Activity 3: Geologic Time
Challenge

What are the key events of
geologic time?
Activity 3: Geologic Time
Procedure
Fill out the “Before” column on Student
Sheet 3.1, “Ideas about Evolution”
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
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
Find a partner from another group and discuss
your ideas about which statements are
accurate and which are not accurate.
Cite evidence from past science classes or
reliable sources.
Ask each other questions.
Be prepared to share your ideas.
Activity 3: Geologic Time
The Geologic Time Scale
Activity 3: Geologic Time
The Geologic Time Scale
Activity 3: Geologic Time
Follow Up

How does the football field model
illustrate the concept of geologic time?
Activity 3: Geologic Time
Follow Up
Analysis 1

In four to six sentences summarize the
geologic timeline and major evolutionary
events.
Activity 3: Geologic Time
Follow Up

What patterns do you notice in the
changes of life through geologic time?
Activity 3: Geologic Time
Follow Up

First cells observed in the fossil record
◦ 3,500 mya or 77.8 yds on a football field

Dinosaurs became extinct
◦ 65 mya or 1.4 yds on a football field

Ardi observed in the fossil record
◦ Approximately 4.4 mya or 0.1 yds on a football
field
Activity 3: Geologic Time
Revisit the
Challenge

What are the key events of
geologic time?
Activity 3: Geologic Time
Key
Vocabulary
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biodiversity
deep time
extinct
extinction
geologic time
geologic time scale
Activity 3: Geologic Time