Earthquake Hazards and Concepts

The video discusses potential earthquake hazards and their effects, focusing on tectonic earthquakes. It covers the types of earthquakes, including tectonic, volcanic, collapse, and explosion earthquakes. The video explains key concepts such as faults, seismicity, and the role of the Philippine Institute of Volcanology and Seismology. It also details five earthquake hazards: ground shaking, ground rupture, tsunamis, liquefaction, and landslides, with examples from the Philippines and other regions.

What is the primary learning objective of the video?

• To identify the causes of volcanic eruptions

• To study the history of earthquakes in Japan

• To explain the different potential earthquake hazards

• To analyze the effects of tsunamis

Which type of earthquake is caused by the sudden displacement along faults?

• Explosion

• Tectonic

• Collapse

• Volcanic

What is the term for the point inside the Earth where an earthquake starts?

• Fault line

• Hypocenter

• Seismic zone

• Epicenter

What defines an active fault?

• A fault that has moved within the last 10,000 years

• A fault that has never moved

• A fault that is located underwater

• A fault that is visible on the Earth's surface

Which earthquake hazard involves the disruptive movement of the ground?

• Ground rupture

• Tsunami

• Ground shaking

• Liquefaction

What is a tsunami?

• A series of sea waves caused by underwater earthquakes

• A type of volcanic eruption

• A collapse of underground mines

• A man-made explosion

What happens during liquefaction?

• A fault line becomes active

• A volcanic eruption occurs

• Solid ground turns into a liquid-like state

• A tsunami is generated

Which hazard is characterized by failures in steep slopes triggered by an earthquake?

• Landslides

• Tsunami

• Ground rupture

• Ground shaking

What was the magnitude of the earthquake that struck the island of Bohol in 2013?

• 6.6

• 8.0

• 7.2

• 5.8

How many people died in the Bohol earthquake of 2013?

• 48

• 1000

• 222

• 976