What Caused the Mass Extinction Recorded at the K-T Boundary?
ESU801  Presenting Your Theory

7. Write at least one question about mass extinction that this investigation has raised for you.

8. How might you investigate this question?

For either the K-T mass extinction or another mass extinction, use available resources to build a case to support a theory that explains the cause of the extinction event. Present your findings in a format that has been approved by your teacher.

Don Davis, NASA
An artist's version of the K-T impact. The asteroid is not shown to scale.

  !   Click these links to find out more about mass extinctions.

Five Worst Extinctions

Permian News

More Permian News

Triassic News

More Triassic News


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