Hazard Maps and Earthquakes

Question 1

What is magnitude?

Answer 1

It is the amount of energy released from the focus point of the earthquake. IT is measured by seismographs using the Richter scale

Question 2

What is intensity?

Answer 2

It is the strength of an earthquake as it is perceived/felt by people. It is usually higher in the center of the earthquake. It uses the Philvocs earthquake intensity scale (PEIS)

Question 3

What is a hazard map?

Answer 3

Its a map that highlights areas that are affected by or are vulnerable to a particular hazard. It is created for natural hazards

Question 4

What are the uses of a hazard map?

Answer 4

Helps prevent serious damage or death, aids in planning, risk reduction measures, and raising awareness.

Question 5

What are the components of a hazard map?

Answer 5

compass rose, title, symbol, legend, color, scale, grid reference or border,

Question 6

What are the earthquake hazards?

Answer 6

liquefaction, tsunami, ground subsidence, ground rupture, ground shaking, landslide?

Question 7

What is liquefaction?

Answer 7

A process by which water-saturated sediment temporarily loses strength and acts like a fluid. Soil liquefaction occurs when soil is transformed from a solid to a liquid state as a result of increased pore pressure and reduced effective stress

Question 8

Ground subsidence

Answer 8

gradual settling or sudden sinking of the Earth’s surface

Question 9

Ground rupture

Answer 9

It is the ripping apart of surface. is the visible offset of the ground surface when an earthquake rupture along a fault affects the Earth’s surface.

Question 10

Ground shaking

Answer 10

the vibration of the ground during an earthquake

Question 11

Landslide

Answer 11

failures in steep hilly slopes that are trigged by earthquakes