Understanding Tsunamis

The video introduces tsunamis, explaining their causes such as earthquakes, landslides, volcanic eruptions, and meteorite impacts. It describes the mechanics of how tsunamis form, move, and increase in height as they approach land, causing significant destruction. The video highlights that the first wave is not the strongest and that tsunamis can travel as fast as a jet plane. It provides trivia, such as how a tsunami wave can be less than 30 cm in height, and offers safety tips like holding onto a floating object if caught in a tsunami. The video concludes by encouraging viewers to learn more about earthquakes, a major cause of tsunamis.

What are some causes of tsunamis?

• Heavy rainfall

• Sudden movements of the ocean floor

• Strong winds

• Tidal waves

What happens when an earthquake occurs on the sea bed?

• A vertical jolt is created

• The sea bed remains unchanged

• A horizontal jolt is created

• The water remains calm

How are tsunamis felt on the ocean surface?

• As large waves

• As a strong current

• As a ripple

• As a whirlpool

What happens to tsunami waves as they reach the shore?

• They remain the same

• They decrease in height

• They disappear

• They increase in height

Which wave of a tsunami is usually the strongest?

• The first wave

• The second wave

• The third wave

• The successive waves

At what speed can tsunamis travel?

• 100 miles per hour

• 200 miles per hour

• 300 miles per hour

• 500 miles per hour

What is the height of a tsunami wave that can pass unnoticed?

• Less than 10 cms

• Less than 20 cms

• Less than 30 cms

• Less than 40 cms

What should you do if you get stuck in a tsunami?

• Dive underwater

• Hold onto a floating object

• Swim with the current

• Swim against the current

What is one of the major causes of a tsunami?

• Floods

• Earthquakes

• Tornadoes

• Hurricanes