Understanding Tsunamis

The video explores the science of tsunamis, starting with the 2004 Sumatra earthquake, which was one of the most destructive in history. It explains what tsunamis are, their causes, and how they can be predicted using systems like DART. The video also provides practical tips on how to survive a tsunami, emphasizing the importance of reaching higher ground and staying safe from debris and power lines.

What was the magnitude of the 2004 Sumatra earthquake?

• 10.1 to 10.3

• 7.1 to 7.3

• 9.1 to 9.3

• 8.1 to 8.3

Which countries were most affected by the 2004 tsunami?

• Japan, China, and Korea

• Australia, New Zealand, and Fiji

• Indonesia, India, Sri Lanka, and Thailand

• USA, Canada, and Mexico

What is a tsunami primarily caused by?

• Hurricanes

• Earthquakes

• Tornadoes

• Floods

What percentage of tsunamis are caused by earthquakes?

• 60%

• 70%

• 80%

• 50%

Which system is used to predict tsunamis?

• LIDAR

• RADAR

• SONAR

• DART

When was the DART system established?

• 1990

• 1970

• 2000

• 1980

What should you do first in a tsunami situation?

• Go to a lower ground

• Go to a higher ground

• Swim away from the shore

• Stay indoors

How long should you stay in a safe place during a tsunami?

• At least 6 hours

• At least 4 hours

• At least 8 hours

• At least 2 hours

Why should you avoid downed power lines during a tsunami?

• They can cause fires

• They can electrocute you

• They can block roads

• They can cause floods

Why is it important to stay away from buildings and bridges during a tsunami?

• They can attract lightning

• They can block your view

• They can catch fire

• They can collapse