1. Fossil Evidence of Evolution

2. Where does the majority of evidence for evolution come from?

3. What are fossils?
The remains, an imprint, or a trace of a prehistoric organism
Most fossils are found in sedimentary rock.
Trace fossil
Imprint fossil
Remains fossil

4. What is sedimentary rock?
Formed when layers of sand, silt, clay, or mud or compacted and cemented together.
Examples: limestone

5. Would you agree that..
Wolves evolved into whales

6. Becoming a fossil Watch the Becoming aFossil Video
Why do most living things not leave fossils behind?
How are fossils formed?
How are fossils found?
How do scientists determine the age of fossils?

7. Determining the age of fossils
Watch the Radiometic dating Video
How does radiometric dating work?

8. Evolution: How does it happens?
Watch the video Evolving Ideas: How do We Know Evolution Happens
What can we learn from fossil evidence?
How do the transitional fossils of whales support the theory of evolution by natural selection?
What specific fossil evidence points to whales' evolution from land to water?

9. Whale Evolution
Based on the previous video you will construct timeline using the Whale in a Making
Cut out the timeline and put in chronological order from earliest date to most recent.
Your timeline should be 21 centimeters long with each million years (1 cm/million years)

10. Discussion NB p. 9 Is your fossil record complete? Why or why not?
How do the wide gaps in the fossil record prevent scientist from knowing more about past organisms?
Looking at the evidence to support the idea of a wolf-like creature evolving into the modern whale, do you agree or disagree with the idea? Why or why not?