Earthquake and Tsunami Concepts

The video discusses various earthquake hazards, including seismic shaking, liquefaction, landslides, mud flows, and tsunamis. It explains how seismic vibrations can damage structures and the factors influencing this damage. The phenomenon of liquefaction and its dangers, such as sinkholes, are covered. The video also explores tsunamis, their causes, and wave dynamics. Finally, it addresses earthquake preparedness, safety procedures, and the challenges of predicting earthquakes.

Which of the following is NOT a factor that influences the damage caused by seismic vibrations?

• Intensity of the earthquake

• Duration of the vibrations

• Color of the building

• Design of the structure

Which material is most likely to cause serious safety threats during an earthquake?

• Unreinforced stone or brick

• Steel

• Reinforced concrete

• Wood

What happens to saturated materials during liquefaction?

• They evaporate

• They turn into a fluid-like state

• They become magnetic

• They become more solid

Which historical earthquake is known for causing significant damage due to fires?

• San Francisco Earthquake of 1906

• Tokyo Earthquake of 1923

• Lisbon Earthquake of 1755

• Mexico City Earthquake of 1985

What triggers a tsunami?

• A meteor impact

• A volcanic eruption

• A hurricane

• An earthquake displacing the ocean floor

What is the term for the bottom part of a wave?

• Trough

• Amplitude

• Crest

• Wavelength

What is the term for the time it takes for a wave crest to travel from point A to point B?

• Amplitude

• Period

• Frequency

• Wavelength

What is the primary challenge in predicting earthquakes?

• Unpredictable nature of the Earth's movements

• Lack of technology

• Insufficient funding

• Inaccurate historical data

What is a seismic gap?

• A gap in earthquake prediction models

• A gap in the Earth's crust

• An area along a fault with no recent earthquake activity

• A gap in seismic data

Which of the following is a safety measure during an earthquake?

• Standing in a doorway

• Running outside immediately

• Hiding under a desk

• Standing near windows