Earthquake and its effects
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Earthquake and its Effects. Prepared by Celestine Dalrymple - Collins. l. next. OBJECTIVES At the end of the lesson students should be able to:- Define the term earthquakes Explain the occurrence of earthquakes Describe the causes of earthquakes

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Earthquake and its Effects

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Earthquake and its effects

Earthquake and its Effects

Prepared by

Celestine Dalrymple- Collins

l

next


Earthquake and its effects

OBJECTIVES

At the end of the lesson students should be able to:-

  • Define the term earthquakes

  • Explain the occurrence of earthquakes

  • Describe the causes of earthquakes

  • Name the instrument used to measure the intensity of an earthquake.

  • Describe the effects of earthquakes

  • State the precautionary measures implemented before, during and after an earthquake

  • Describe the contribution of individuals and the state agency before, during and after an earthquake

  • Identify the occurrence of earthquake in different countries.

NEXT


Sub topices

SUB-TOPICES

What is an earthquake?

What are the causes of earthquakes?

How do earthquake occur?

What are the instruments used to measure the intensity of an earthquake?

What are the effects of earthquakes?

Describe the precautionary measures taken before, during and after an earthquake?

Describe how individuals and the state organization assist before, during and after an earthquake.

How do countries which experience earth manage during the time of disaster.

NEXT


What is an earthquake

What is an earthquake?

An earthquake is a sudden vibration in the earth’s crust.

Click this button for more information

Read and formulate your own definition


What are the causes of an earthquake

What are the causes of an earthquake?

Plate tectonics- the movement of crustal plates and the features which are formed at plate margins

Faulting- the breaking of the crustal plates caused by the forces of tension and or tension

Volcanic action –the sudden movement of molten materials from the mantle to the earths surface.

Plutonic action -the sudden movement of molten materials within the earth’s crust.

Click for more diagrams

Figure 1. Tectonic action


Diagrams showing causes of earthquakes

Diagrams showing causes of earthquakes

Figure 3.Tectonic activity

Figure 2. Volcanic and plutonic activities

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Figure 4. Faulting activity


The occurrence of earthquake

The occurrence of earthquake

The earth’s crust is under stress and strain from forces of compression, tension and convection when the pressure gets too great the energy is released and the sudden movement occurs. Where the snap occur is the focus, above the focus on the earth’s surface is the epicenter. The force of the movement travel in waves called seismic waves. See figure 5.

Click to read, then next

Figure 5, illustrate how the earthquake occurs


What are the instruments used to measure the earthquake

What are the instruments used to measure the earthquake.

The Richter scale is used to measure the intensity of an earthquake.

The seismograph is used to record the magnitude of an earthquake.

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Figure 5, A seismograph

An earthquake reading on the seismograph


What are the effect of an earthquake

What are the effect of an earthquake?

Primary effects

Secondary effects

Click for pictures

Destruction of buildings, roads , bridges and utility poles.

Major and minor injury

Loss of life

Breakage of pipelines

Rock falls and land slides

Fires

Tsunamis

Flooding

Food shortages

Diseases

Riots

Homeless and displaced people

Population decline


Earthquake and its effects

Massive destruction and injury caused by earthquakes

Destruction of buildings

Major injury

Fire

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Homeless people


What are the precautionary measures

What are the precautionary measures?

Before

During

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Avoid living close to fault lines or plate margins

Avoid areas with unstable rocks

Construct building according to the State building code

Read information on earthquakes listen to public information on earthquakes

Always have a first aid kit and extra storage of food

Educate all the members what to do during an earthquake

Have an emergency plan in place for everyone

Stay calm

Go under a table or at the door jam

Console all members

If driving Stop and park in a safe place


Precautionary measures cont

Precautionary measures (cont.)

Stay calm

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Click


Precautionary measures cont1

Precautionary measures (cont.)

After

Stay calm

Account for all members

Avoid contact with utility lines

Offer help when and where possible

Get help for yourself or other if possible

Listen to the media for official information

Cooperate with officials or profession rescue workers

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Assistance

ASSISTANCE

State Agency

Individuals

click

Emergency help

Shelter managers

Rescue workers

Medical assistance

Social workers

To add some more click the button

Rescue workers

General assistance

Account for individuals

To add some more click the button


How do countries manage and after an earthquake

How do countries manage and after an earthquake?

For a country you have studies describe the extent of the damage.

Describe how the people are coping after the earthquake.

Describe the assistance offered by individuals and state agencies to restore normal life.

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Enjoy playing this game

Enjoy playing this game!

View earthquake zones in Jamaica

Click to play a game


Questions

Questions

What did you learn about earthquakes?

PLEASE do you journal entry now

Did you achieve the stated objectives?

Click here to remind you


Talk to you friend about earthquakes

Talk to you friend about earthquakes.

If you want to more know more

about earthquakes? Click

The End


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