Underwater Landslides and Their Impact

Underwater Landslides and Their Impact

Assessment

Interactive Video

Science, Geography, History

7th - 12th Grade

Medium

Created by

Emma Peterson

Used 2+ times

FREE Resource

The video explores underwater landslides, known as megaslides, which occur on continental slopes. These events can be massive, affecting ecosystems and infrastructure. Research indicates that weak layers, possibly composed of microscopic dead algae, play a crucial role in triggering these slides. Understanding these processes is vital for coastal safety. The video is supported by Linode, a cloud computing company.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a unique characteristic of underwater landslides compared to those on land?

They occur only due to earthquakes.

They can trigger tsunamis.

They are visible from the shore.

They are smaller in size.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where do most massive underwater landslides occur?

In the middle of the ocean basins.

At the edges of continental shelves.

Near volcanic islands.

In shallow coastal waters.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the impact of the megaslide in the North Sea over 8,000 years ago?

It created a new island.

It formed a new underwater canyon.

It caused a 20-meter high wave.

It led to the extinction of a marine species.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can megaslides affect modern infrastructure?

By reducing ocean currents.

By increasing fish populations.

By breaking underwater cables.

By creating new landmasses.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it challenging to study the causes of megaslides?

The slides are too small to detect.

The technology to study them is unavailable.

There are too many variables at play.

The ocean floor is too deep to explore.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did the 2018 study suggest as a possible cause for megaslides?

Sudden changes in ocean temperature.

Large underwater earthquakes.

Microscopic dead algae layers.

Volcanic eruptions.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What technique was used to identify the weak layer in the 2018 study?

Sonar mapping.

Satellite imaging.

Seismic reflection.

Underwater drilling.

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