a long, narrow depression formed when a tectonic plate stretches and fractures at a constructive margin, causing the land to sink between parallel fault lines

a broad, gently sloping volcano formed by basaltic lava that is runny and flows easily. Eruptions tend to be effusive rather than explosive - lava flows out

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

Processes at constructive/divergent plate margins

Geography

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

a steep-sided valley formed by plates pulling apart

has gentle slopes and erupts runny, basaltic lava

measures the energy released by an earthquake

Match the lesson's keywords and their definitions.

What happens at a constructive (divergent) plate margin?

Which feature is formed at constructive plate margins?

What is an example of a constructive plate margin?

What is the name of the theory that explains the movement of tectonic plates?

What are the two main types of tectonic plate?

Which layer of Earth is made up of tectonic plates?

Where are most earthquakes and volcanoes found?

A large ocean that existed millions of years ago

A supercontinent that existed millions of years ago

Content guidance

Depiction or discussion of violence or suffering

Adult supervision required

Exit Quiz