http://www.bbc.co.uk/nature/prehistoric
Geologic Time Scale Webquest
Name:
Choose 4 prehistoric animals to research. List the information you learned about each in the chart
below.
Prehistoric Animal
Characteristics/facts
Time period/years
Look at the timeline. Fill in the timeline below. Where are humans on this?
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Click on Big Five Extinctions. Fill out the chart below about each.
Mass Extinction Event
Time
Facts and possible cause
Click on Mass Extinction Theories. What are the 4 extinction theories that may have led to the
Cretaceous Mass Extinction? List and describe.
1.
2.
3.
4.
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Click on Ancient Earth Habitats
List and describe the 4 ancient earth habitats including when they may have occurred.
1. ________________________________________________________________________
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2. ________________________________________________________________________
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3. ________________________________________________________________________
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4. ________________________________________________________________________
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On the main page, read the paragraph Life on Ancient Earth. Click on extraordinary history.
1. How old is the Earth? ___________________________
2. What was Earth like in the beginning?
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3. When did life begin Earth?__________________
4. What was the first life form? _________________________
5. How long have humans been on Earth? ________________________What percent is that in
Earth’s history? ____________________________
6. Explore the geologic time periods. Find out when each of the following events/organisms
occurred.
Event or Organism
Time period
Snowball Earth
Explosion of life –including trilobites!
Age of the Fishes
First Reptiles
Pangaea formed and the Earth was hot!!
First mammals and dinosaurs
First birds, Continents breaking up
Global Warming, grasses grow
Human Ancestors lived
Polar Ice cap at the North Pole
20 glacial cycles, Mammoths!
Humans take over!!