Effects of earthquakes and volcanoes

Effects of earthquakes and volcanoes

​LO: Identify and explain the primary and secondary effects of natural disasters

Open Ended

What are convection currents ?

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Multiple Choice

What is a subduction zone?

• A place where tectonic plates move apart

• A place where one tectonic plate slides under another

• A place where tectonic plates move horizontally

• A place where tectonic plates collide but don’t move

Multiple Choice

Identify the Major Plate labeled B

• African Plate
• Antarctic Plate
• Pacific Plate
• Eurasian Plate 

Multiple Choice

What geological forces might be responsible for this range of mountains?

• diverging tectonic plates
• erosion of the land by the ocean
• converging tectonic plates
• deposition of sediments by the ocean
  

One of the regions where people are at greatest risk is the Ring of Fire

​The level of risk depends on the geographical location – areas close to plate boundaries such as those around the Ring of Fir are more at risk than those areas in the middle of tectonic plates.

​Risks and vulnerability

• Areas which are densely populated are more at risk.

• Developing and emerging countries building structures may be less robust and more densely packed together,

Urbanisation

• ​LEDC are less equipped to deal with Natural disasters

• Poorer infrastructure leads to more damage

• Poor health services

• weaker emergency response

• lower levels of planning and preparation

​​Level of economic development

​who is most vulnerable

Categorize

Options (20)

Death

injury

Tsunami

Destruction of property

Displacement of people

Psychological trauma

Ground shaking

Aftershocks

Landslides

Lava flows

Ash fall

Volcanic gases

Pyroclastic flows

Mudflows

Economic loss

Infrastructure damage

Disruption of services

Environmental degradation

Population displacement

Crop destruction

Organize these options into the right categories of the effects of earthquakes and volcanoes

Primary effects

Caused by earth quake

Caused by volvano

Secondary effects

​Primary effects:
- Death
- Injuries
- Damage to crops
- Damage to infrastructure

​ Secondary:
- spread of diseases
- homelessness
- loss of jobs
- food shortages
- transportation issues ( grounded aeroplanes )
- mUDFLOWS

​​- Pyroclastic flow
A fast moving flow of material down the side of a volcano. The flow is a mixture of ash, pumice and hot gases. Very dangerous due to high speed and high temperatures, capable of causing widespread deaths.

​​Caused by :

- Lava flow
- Volcanic bombs from eruption
- toxic gas clouds

​ Primary vs secondary effects of volcanoes

​Primary effects:
- Death
- Injuries
- Damage to crops
- Damage to infrastructure
- avalanches
- Tsunamis

​ Secondary:
- spread of diseases
- homelessness
- loss of jobs
- food shortages
- transportation issues
- tsunami
- landslides
- Fires

• buildings Collapsing

• Falling objects

• Gas lines being bust

• Roads being destroyed

• Landslides and avalanches.
  

​​Caused by :

​ Primary vs secondary effects of Earthquakes