the process at a destructive plate margin where a denser oceanic plate sinks beneath a less dense plate into the mantle

a series of large ocean waves caused by underwater earthquakes, volcanic eruptions or landslides

a measure of the energy released by an earthquake; a higher magnitude means a stronger earthquake

Processes at destructive/convergent plate margins

Geography

An introduction to natural hazards

Factors affecting hazard risk

Plate tectonics theory

Global distribution of earthquakes and volcanoes

Processes at constructive/divergent plate margins

Processes at conservative plate margins

Primary and secondary effects and responses to tectonic hazards

An example of effects and responses to a tectonic hazard in an HIC

An example of effects and responses to a tectonic hazard in an LIC

Reducing risks from earthquakes and volcanoes

Using GIS to visualise physical processes at different types of plate margin

This unit teaches pupils about natural and tectonic hazards, their location, causes and effects. Pupils learn about the different types of hazard before focusing on earthquakes and volcanoes. Pupils will learn about tectonic processes, hazard impacts and the options for mitigation and adaptation.

Natural and tectonic hazards

Depiction or discussion of famine, disease, natural disasters.

Depiction or discussion of violence or suffering

when one tectonic plate is forced under another plate

a giant ocean wave caused by underwater earthquakes

a measure of the energy released by an earthquake

Match the keywords and their definitions.

What happens at a destructive (convergent) plate margin?

When a plate is subducted into the mantle, it heats up.

This helps the rock above to melt and form magma.

This magma rises up through cracks in the crust, causing volcanic eruptions.

Over time, layers of lava and ash build up to form a volcano.

Volcanoes at destructive plate margins produce explosive eruptions.

Put the sentences in the correct order to describe the formation of volcanoes at a destructive plate margin.

Explosive volcanic eruptions produce a range of very dangerous hazards, including:

Which layer of Earth is composed mostly of solid iron and nickel?

What is a cause of tectonic plate movement?

Which of the following is a result of tectonic plate movement?

What type of volcano erupts gently and has broad, sloping sides?

What is the main reason for the occurrence of tsunamis?

A natural hazard is an event that always causes damage

A natural disaster causes significant damage to human lives or property

Natural disasters happen anywhere in the world

Starter Quiz

Which layer of Earth is composed mostly of solid iron and nickel?