Natural Hazards: Tsunamis

Multiple Choice

Which of the following natural events is most likely to trigger a tsunami?

• Earthquake

• Thunderstorm

• Volcanic eruption

• Tornado

Multiple Choice

Which of the following can cause a tsunami?

• Earthquakes

• Volcanic eruptions

• Meteorite impact

• All of the above

Multiple Choice

Which features describe tsunamis in the open ocean?

• They have a high amplitude and short wavelength.

• They have a low amplitude and long wavelength.

• They are easily felt by ships.

• They travel slowly.

Multiple Choice

As a tsunami wave approaches the coast, what happens to its speed and amplitude?

• Speed increases, amplitude decreases

• Speed decreases, amplitude increases

• Both speed and amplitude increase

• Both speed and amplitude decrease

Multiple Select

Select all statements that are true about tsunamis as they reach the shore.

• The first wave is usually the most destructive.

• The water often pulls back before the wave arrives.

• Tsunamis come ashore as a turbulent surge of water.

• Tsunamis are v-shaped rolling waves.

Multiple Choice

Which of the following areas are at the highest risk for tsunamis?

• Areas less than 25 ft. above sea level and within one mile of shore

• Mountainous regions far from the coast

• Deserts located inland

• Urban areas at high elevation

Multiple Select

Based on the world map of earthquakes that caused damaging tsunamis, which regions are most frequently affected by tsunamis?

• Pacific Ocean coasts

• Atlantic Ocean coasts

• Indian Ocean coasts

• Mediterranean Sea coasts

Multiple Choice

What significant change is observed in the Japan coastline after a tsunami, as shown in the satellite images?

• Flooding of coastal areas

• Increased vegetation

• Expansion of land

• No visible change

Multiple Choice

Which of the following best describes the changes shown in the 'Before and After' images of the coastal town?

• The area became more urbanized over time.

• A natural disaster caused significant destruction to the area.

• The population increased, leading to more buildings.

• The climate improved, resulting in more vegetation.

Multiple Choice

Which of the following strategies is NOT recommended for tsunami-resistant construction?

• Build structures with reinforced concrete instead of wood

• Design structures to let water flow through

• Construct deep foundations braced at the footings

• Use lightweight wooden frames for all buildings