Geologic Time. Activity 3: Geologic Time LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be...

Activity 3

Geologic Time

Activity 3: Geologic Time

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Get Started

Sketch this timeline in your science notebook:


Get Started

First cells preserved in the fossil record Dinosaurs became extinct. “Ardi,” a skeleton observed in the fossil

record, who lived in Ethiopia.

Label on your timeline where you think the following events occurred:


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.

Read the Introduction.

Activity 3: Geologic TimeActivity 3: Geologic Time

What are the key events of geologic time?

Challenge


Procedure

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.

Fill out the “Before” column on Student Sheet 3.1, “Ideas about Evolution”


The Geologic Time Scale


Follow Up

How does the football field model illustrate the concept of geologic time?


Follow Up

In four to six sentences summarize the geologic timeline and major evolutionary events.

Analysis 1


Follow Up

What patterns do you notice in the changes of life through 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


What are the key events of geologic time?

Revisit the Challenge


biodiversity deep time extinct extinction geologic time geologic time scale

Key Vocabulary

Geologic Time. Activity 3: Geologic Time LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be...

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