Earthquakes

Alexis Keaveny

Research Paper - Mr. Taylor & Mrs. Rapoport

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1.What is an Earthquake?

A sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.

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2.How does an earthquake start?

Earthquakes are caused by movements of plates underneath the Earth's surface. The places where these plates meet are breaks in the Earth's crust called faults. Earthquakes often happen when these plates along the faults move in different directions.

3.Where does the earthquake take place at?

  • South America
  • North America
  • Japan
  • Australia
  • Africa
  • Philippines
  • India
  • Caribbean
  • Haiti

4.How many times do earthquake happen yearly?

According to the US Geological Survey there are approximately 1,000,000 earthquakes around the world every year (although the vast majority of these are so small they can only be detected by sensitive scientific equipment).

5.What and who do earthquakes affect?

The main effects of earthquakes are-
1.Deformed ground surface
2.Damage to man made structures
3.Damage to towns and cities
4.Loss of human and animal life
5.Devastating fires
6.Landslides
7.Flash floods
8.Tsunamis
9.Seiche
10.Sandblows

11.Faults

6.How can you predict when a earthquake is happening?

Earthquake prediction is currently not possible, as such, seismologists will attempt to quantify the risk posed by a particular fault zone rather than state exactly when an earthquake will occur

7.Can earthquakes happen on other Planets?

Usually, no. Earth is the only planet to have a molten core, which means it's Tectonic plates have something to 'Float' on and move around on. On Mars for example, the core is solid, and there are no tectonic plates, which means earthquakes aren't possible.

8.How can Earthquakes be predicted?

With a seismograph

9.What are after effect of an earthquake?

The main effects of earthquakes are-
Deformed ground surface, Damage to towns and cities, Loss of human and animal life, Devastating fires, Landslides,Flash floods,Tsunamis, Seiche, Sandblows, Faults.

10.How long do earthquakes last?

Strong ground shaking during a moderate to large earthquake typically lasts about 10 to 30. Readjustments in the earth cause more earthquakes (aftershocks) that can occur intermittently for weeks or months.

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