Plate Tectonics
Plate tectonics is the theory that Earth's crust is split into moving plates whose interactions cause earthquakes, volcanoes and mountains.
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Plate tectonics is the theory that Earth's crust is split into moving plates whose interactions cause earthquakes, volcanoes and mountains.
- Plates move a few centimetres a year
- Convection currents in the mantle drive them
- Most activity is at plate boundaries
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Plate Tectonics?
Within Geography, which covers maps, landforms, weather, climate, population and settlements: understand how our planet and people connect, this topic explains Plate Tectonics. Geography explains how places, people and natural processes connect, so each topic here combines a clear definition with a visual model.
Check that you can explain Plate Tectonics in your own words and give one example from everyday life. If you can do that, you have understood the core idea.
Understanding Plate Tectonics helps you explain patterns on maps and in the news, and make reasoned decisions about places and environments.
Plate Tectonics in detail
The Earth's crust is broken into large pieces called tectonic plates that float on the mantle and move a few centimetres a year, driven by convection currents and the pull of sinking plates. Wegener proposed continental drift, and evidence includes matching coastlines, fossils and rock types on separate continents, and the pattern of sea-floor spreading.
Most earthquakes, volcanoes and mountain ranges occur at plate boundaries. The Pacific Ring of Fire is an example of an area with intense activity. The theory explains how continents have moved over millions of years, from the supercontinent Pangaea to today's layout.
How the interactive helps you understand Plate Tectonics
Watch the tectonic plates in the interactive. Use any sliders or buttons it offers to change the values and see how the tectonic plates responds.
Before you change anything, predict the result. Then change one value at a time and check whether your prediction was right. This is a quick way to build a correct mental model of Plate Tectonics.
Real-life uses and examples
- Explain how Plate Tectonics affects people, jobs and land use in a region.
- Support an answer about Plate Tectonics with a named case study and specific evidence.
- Interpret a graph or map that shows Plate Tectonics and say what it suggests.
Common mistakes to avoid
- Mixing up cause, effect and consequence when you explain Plate Tectonics.
- Writing general statements without a named place or example.
- Learning the definition without testing it. Use the quiz and the interactive to check that you can apply the idea.
Frequently asked questions about Plate Tectonics
What is Plate Tectonics?
Plate tectonics is the theory that Earth's crust is split into moving plates whose interactions cause earthquakes, volcanoes and mountains.
What are the most important points about Plate Tectonics?
The main points are: Plates move a few centimetres a year; Convection currents in the mantle drive them; Most activity is at plate boundaries.
Why is Plate Tectonics useful?
Understanding Plate Tectonics helps you explain patterns on maps and in the news, and make reasoned decisions about places and environments.
How can I practise Plate Tectonics?
Open the interactive at the top of this page and change the controls one at a time. Predict the result before each change, then take the three-question quiz. A score of two or more marks the topic as complete on this device.
Which topics are related to Plate Tectonics?
Related topics in Geography include Earthquakes, The Rock Cycle, River Processes and Landforms.