Test answers

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  • T

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What is the term of a plate?

  • Plates are large broken down segments of the earths crust. They are made up of land (continental crust) and sea (oceanic crust)

Explain why plates move

  • Plates move due to the giant heating movements in the mantle,known as convection currents.they drag the plates in different directions

Complete the table to show the margin:

  • Diagram

Type of Plate Margin

(i)

Destructive (Convergent) Margin

(ii)

conservative

(iii)

Constructive

Label the diagram

  • Top Left → Crust

  • Middle Left → Focus

  • Bottom Left → Mantle

  • Top Right → Epicentre

  • Middle Right → Shockwave

  • (Fault Line is already done)

  • SEISMOMETER: An instrument used to record shock waves

  • RICHTER SCALE: Scale used to measure the strength of earthquakes

  • Add three other points to the build of a modern building to help it withstand earthquakes

  1. Automatic shutters come down over the windows to prevent pedestrians being showered by glass

    (at the bottom) foundations sunk deep into bedrock avoiding clay

    fire-resistant building materials

  • A tsunami is an example of an earthquake hazard. List 2 other examples of earthquake hazards.

  1. Landslides and building collapse

  • Apart from improved building design, describe two other ways in which people can be prepared for earthquakes.

Emergency Services

  • In certain countries emergency services are trained to help during the aftermath of an earthquake (with helicopters, ambulances, rescue teams etc).

  • Planning Controls

  • Planning control regulations often restrict settlement in areas prone to earthquakes (eg. coastlines where tsunamis are possible, hillsides prone to landslides etc).

  • Education Programmes In some countries the public are educated about how to cope during and after an earthquake event (there are lectures, TV and radio broadcasts, websites, leaflets, school drills etc).

  • Building Design

  • Buildings in some countries are designed to withstand earthquakes. They have special materials to minimise death and damage.