12 Questions
| Attempts: 7557

Questions and Answers

- 1.What is the focus of an earthquake?
- A.
Based on amplitudes of the largest seismic waves.

- B.
The point on the Earth's surface directly above the focus.

- C.
The place within the Earth where energy is released.

- D.
Transmitted throughsolids and liquids.

- 2.What is the focus of the epicenter?
- A.
The point on the Earth's surface directly above the focus.

- B.
Vibrational energy waves that travel outward in all directions from the focus. They can be measured on a seismograph.

- C.
Data from 3 seismic statins is used to triangulate the location of the epicenter.

- D.
The place within the Earth where energy is released.

- 3.What is the difference in intensity between earthquakes with Richter magnitudes of 5 and 8?
- A.
The place within the Earth where energy is released.

- B.
Based on amplitudes of the largest seismic waves.

- C.
Data from 3 seismic statins is used to triangulate the location of the epicenter.

- D.
An increase of 1 fold increase of 1 on the scale =10 fold increase in intensity

- 4.What is the difference in energy released?
- A.
Based on amplitudes of the largest seismic waves.

- B.
A = 30 fold increase in energy released.

- C.
The place within the Earth where energy is released.

- D.
An increase of 1 fold increase of 1 on the scale =10 fold increase in intensity

- 5.What is the fastest type of seismic wave?
- A.
Richter Scale

- B.
Secondary waves

- C.
Primary waves

- D.
3 Seismic Stations

- 6.Where do most earthquakes occur?
- A.
Along Plate Boundaries

- B.
Oceanic divergent boundaries

- C.
Landslides

- D.
Liquifaction

- 7.Where do you find the deepest focus earthquakes?
- A.
Subduction zones

- B.
Oceanic divergent boundaries

- C.
Continental rifts,collision zones and transforms

- D.
All of the above

- 8.How many seismographs are required to determine the location of the epicenter of an earthquake?
- A.
3

- B.
2

- C.
4

- D.
9

- 9.What are the major characteristics of P and S waves?
- A.
Compressional wave, slower seismic waves 6km per second, transmitted through only solids: Shear wave, fastest-3.5 km per second, transmitted through solids and liquids.

- B.
Shear wave, slower-3.5 km per second, transmitted only through solids.

- C.
Compressional wave, the fastest seismic waves 6km per second, transmitted through solids and liquids

- D.
Compressional wave, fastest seismic waves 6km per second, transmitted through solids and liquids: Shear wave, slower-3.5 km per second, transmitted only through solids.

- 10.Which type of seismic wave is responsible for causing the most damage?
- A.
Surface Wave

- B.
Primary Wave

- C.
Secondary Wave

- D.
Seismic Wave

- 11.What is a seismic gap?
- A.
Based on amplitudes of the largest seismic waves.

- B.
No reliable method

- C.
Areas known to be under strain that have not produced earthquakes.

- D.
Shear wave,slower-3.5 km per second,transmitted only through solids.

- 12.All of the following are several examples of earthquake hazards EXCEPT:
- A.
Ground Motion

- B.
Fire

- C.
Tornado

- D.
Tsunamis

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