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Mass Extinctions and Their Causes

Mass Extinctions and Their Causes

Assessment

Interactive Video

Biology

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video discusses the natural background extinction rate and contrasts it with mass extinctions, which are significant increases in extinction rates over geological time. Causes of mass extinctions include tectonic shifts, volcanic eruptions, climate change, and meteor impacts. The video also covers the geological history of Earth's mass extinctions and highlights the current trend of increased extinction rates due to human activities, suggesting a potential sixth mass extinction.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the estimated number of species that naturally go extinct each year?

Between 100 and 1000

Between 1 and 10

More than 1000

Between 10 and 100

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a cause of mass extinctions?

Meteor impacts

Solar flares

Volcanic eruptions

Tectonic movements

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the most famous mass extinction event known for the extinction of dinosaurs?

Devonian extinction

Permian-Triassic extinction

Holocene extinction

Triassic-Jurassic extinction

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many major mass extinctions have been recorded in Earth's history?

Six

Five

Four

Three

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of families were lost during the Permian-Triassic extinction?

54%

23%

19%

25%

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a 'family' in biological terms as used in the video?

A collection of ecosystems

A group of related species

A type of habitat

A single species

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many mammals are expected to go extinct every 400 years according to background extinction rates?

50

10

89

2

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