Earthquake Hazards

Question 1

What is earthquake?

Answer 1

• Vibration of the earth produced by rapid release of energy from the lithosphere
• Produced by slippage in fault

Question 2

The point within eartg where faulting begins

Answer 2

Focus

Question 3

The point directly above the focus of the surface

Answer 3

Epicenter

Question 4

Energy released by eartgquake, it travels to all direction

Answer 4

Seismic waves

Question 5

Earthquake that occurs sometime soon after a major earthquake

Answer 5

Aftershock

Question 6

Device used to record the motion of the ground during an eartgquake

Answer 6

Seismograph

Question 7

Instrument that detect seismic waves

Answer 7

Seismometer

Question 8

Records intensity, height, and amplitude of seismic waves

Answer 8

Seismograph

Question 9

Earthquake agents that have the potential to cause harm to vulnerable targets

Answer 9

Earthquake hazards

Question 10

What are primary effects?

Answer 10

Permanent features, causes damage to natural or human-constructed objects

Question 11

What are secondary effects?

Answer 11

When ground movement leads to another destruction

Question 12

Ground rupture/displacement

Answer 12

Primary effects (caused by movement of the fault)

Question 13

Liquefaction

Answer 13

Secondary effects (caused by vibration and water saturation)
Soil becomes less compact and decrease density

Question 14

Earthquake induced ground subsidence

Answer 14

Primary effects (sink hole)

Question 15

Landslides

Answer 15

Secondary effects (causes flood, blockage of rivers, and damage to properties)

Question 16

Tsunami

Answer 16

Secondary effects (huge sea wave triggered by a violent displacement of the ocean floor (normal and reverse fault))

Question 17

Fires

Answer 17

Secondary effects (moderate shaking causes electrical lines, fuel, and overturn stores break)