Earthquake Impact and Measurement Concepts

The video discusses the concept of earthquake intensity, differentiating it from magnitude. It compares the Chile, Japan, and Haiti earthquakes, highlighting how factors like location, depth, and infrastructure affect intensity. The Mercalli Intensity Scale is introduced as a measure of earthquake damage. The video concludes with a case study of the Haiti earthquake, emphasizing the role of human infrastructure in disaster outcomes.

What is the primary focus when discussing the intensity of an earthquake?

• The amount of destruction caused

• The duration of the earthquake

• The energy released by the earthquake

• The depth of the earthquake

Which earthquake caused a vast tsunami and significant destruction?

• Chile earthquake

• California earthquake

• Japan earthquake

• Haiti earthquake

How does the Mercalli intensity scale measure earthquakes?

• By the amount of ground movement

• By the magnitude

• By the level of damage caused

• By the energy released

What is the difference between intensity and magnitude?

• Both measure energy

• Intensity measures damage, magnitude measures energy

• Both measure damage

• Intensity measures energy, magnitude measures damage

Which factor does NOT affect the intensity of an earthquake?

• Distance from the epicenter

• Color of the soil

• Depth

• Magnitude

Why are shallow earthquakes generally more powerful?

• Their waves lose less power traveling to the surface

• They last longer

• They occur more frequently

• They release more energy

How does local geology affect earthquake impact?

• It changes the earthquake's depth

• It influences the level of damage to structures

• It affects the speed of seismic waves

• It determines the earthquake's magnitude

What was a significant reason for the high death toll in the Haiti earthquake?

• Poor infrastructure

• Proximity to the epicenter

• High magnitude

• Long duration

What is a crucial step in building earthquake-resistant structures?

• Using lightweight materials

• Conducting geological surveys

• Avoiding urban areas

• Building taller structures

What will the next video discuss regarding earthquakes?

• The role of technology in measuring earthquakes

• The economic impact of earthquakes

• Earthquake safety and prediction

• The history of earthquakes