Seismic Waves and Earthquake Concepts

The video discusses a rare 4.8 magnitude earthquake on the East Coast, detailing its impact on residents and providing historical context. It explains key earthquake terminology, such as epicenter and focus, and describes different types of seismic waves, including body waves (P and S waves) and surface waves (Love and Rayleigh waves), highlighting their characteristics and effects.

What was the magnitude of the earthquake that occurred on the East Coast?

• 6.0

• 5.2

• 4.8

• 3.5

How did Jill describe her experience during the earthquake?

• She saw cracks in the walls.

• She heard a loud noise.

• Her apartment building shook.

• She felt nothing unusual.

When did the last earthquake with a magnitude of 4.8 occur in New Jersey?

• August 23, 1938

• September 10, 1965

• June 5, 1978

• July 15, 1950

What is the epicenter of an earthquake?

• The point where the earthquake starts within the Earth.

• The location on the surface directly above the focus.

• The place where seismic waves are weakest.

• The area where the most damage occurs.

Which type of seismic wave is the fastest?

• Rayleigh waves

• S waves

• Love waves

• P waves

What is a characteristic of S waves?

• They are confined to the Earth's surface.

• They cause particles to move perpendicular to the wave direction.

• They are the fastest seismic waves.

• They can travel through liquids.

Which waves are known to cause horizontal shearing of buildings?

• Love waves

• P waves

• S waves

• Rayleigh waves

How do Rayleigh waves move the ground?

• In a back-and-forth motion

• In a side-to-side motion

• In a circular motion

• In an elliptical motion

Which waves are typically the last to be recorded by seismographs?

• Rayleigh waves

• Love waves

• S waves

• P waves

What is the primary difference between body waves and surface waves?

• Surface waves can travel through liquids, while body waves cannot.

• Body waves are slower than surface waves.

• Body waves travel through the Earth's interior, while surface waves travel along the Earth's surface.

• Surface waves are less damaging than body waves.