Tsunami Preparedness and Awareness

The video explains tsunamis, their causes, and how they differ from normal ocean waves. It covers the geological forces that lead to tsunamis, their characteristics, and the dangers they pose. The video also provides guidance on tsunami warnings, evacuation procedures, and safety measures, particularly in New Zealand. It emphasizes the importance of not returning until an official all-clear is given, as multiple waves can occur.

What is the primary difference between normal ocean waves and tsunamis?

• Normal waves are caused by earthquakes, while tsunamis are caused by wind.

• Normal waves are larger than tsunamis.

• Normal waves occur underwater, while tsunamis occur on the surface.

• Normal waves are caused by wind, while tsunamis are caused by water displacement.

Which of the following is NOT a cause of tsunamis?

• Volcanic eruptions

• Landslides

• Wind

• Meteor impacts

How does the wavelength of a tsunami in the open ocean compare to that of normal waves?

• It is twice as long as normal waves.

• It is thousands of times greater than normal waves.

• It is about the same as normal waves.

• It is shorter than normal waves.

What happens to a tsunami wave as it approaches the shore?

• It builds up, becomes steeper, and crashes on the beach.

• It remains unchanged.

• It becomes slower and less steep.

• It disappears completely.

Why are tsunamis considered more dangerous than normal waves?

• They are caused by wind.

• They occur more frequently.

• They can travel further inland.

• They are less predictable.

How much time might you have to react if a tsunami is generated close to the coastline?

• A few days

• A few minutes

• No time at all

• Several hours

What should you do if you experience a strong earthquake near the coast?

• Wait for an official warning before evacuating.

• Stay indoors and wait for instructions.

• Go to the beach to observe the waves.

• Immediately evacuate to high ground or inland.

What is the importance of waiting for an official all-clear signal after a tsunami?

• The first wave is always the largest.

• There may be multiple waves, and the first may not be the biggest.

• The danger is over once the first wave hits.

• The all-clear signal is not necessary.

Where can residents in New Zealand find information about local evacuation zones?

• From television broadcasts

• From the local council

• From local schools

• From the internet

What is a key indicator that a tsunami might be imminent after an earthquake?

• The earthquake is followed by heavy rain.

• The earthquake lasts less than a minute.

• The earthquake is not felt at all.

• The earthquake is strong enough to make standing difficult.