Mass Extinction Event Worksheet
Explore the causes, effects, and evidence of mass extinction events throughout Earth's history with this Grade 8 science worksheet.
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Standards
Mass Extinction Event Worksheet
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following is NOT a characteristic of a mass extinction event?
A sudden, widespread decrease in the number of living species.
A gradual decline in a single species over a long period.
Occurs over a geologically short period of time.
Results in a significant loss of biodiversity.
2. The K-Pg extinction event is most famous for the disappearance of which group of animals?
Mammals
Fish
Dinosaurs
Birds
3. A layer of found globally is strong geological evidence for the asteroid impact theory of the K-Pg extinction event.
4. The Permian-Triassic extinction event is also known as the Great .
5. Describe one major natural cause of a mass extinction event, other than an asteroid impact.
6. Observe the image below. This image shows a geological boundary representing a significant event in Earth's history.
What is this boundary called and what does it represent?
7. All mass extinction events have the same cause.
True
False
8. Human activities are currently contributing to a potential sixth mass extinction event.
True
False
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