Plate Tectonics
Plate tectonics explains how Earth's rigid plates move slowly over the mantle, forming mountains, volcanoes and earthquakes at their boundaries.
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Plate tectonics explains how Earth's rigid plates move slowly over the mantle, forming mountains, volcanoes and earthquakes at their boundaries.
- Evidence includes matching continents
- Seafloor spreading adds crust
- Plates move a few centimetres per year
🧠 Quick quiz
Three questions. Score 2 or more to complete the topic.
What is Plate Tectonics?
Within Earth & Environmental Science, which covers our planet, its resources and ecosystems, and how people can protect the environment, this topic explains Plate Tectonics. Earth and environment topics show how the planet’s systems shape landscapes, climate and life, with models that make these processes visible.
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 the environment around you and weigh up how people can protect it.
Plate Tectonics in detail
Earth's lithosphere is broken into tectonic plates that move slowly, a few centimetres a year, on the softer asthenosphere beneath, driven by mantle convection, ridge push and slab pull. Evidence includes the jigsaw fit of continents, matching fossils and rocks, sea-floor spreading and the pattern of earthquakes and volcanoes.
Plate boundaries are divergent (plates move apart, forming mid-ocean ridges and rift valleys), convergent (plates collide, forming trenches, volcanoes and fold mountains) and transform (plates slide past, as along the San Andreas Fault). Plate movement has shaped the continents and oceans over hundreds of millions of years.
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 the landscape or climate near you.
- Link Plate Tectonics to a real environmental problem and a possible solution.
- Use a diagram of Plate Tectonics to describe the steps of a process in order.
Common mistakes to avoid
- Describing a process without the timescale it works over.
- Presenting one cause as the only cause of an environmental change.
- 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 explains how Earth's rigid plates move slowly over the mantle, forming mountains, volcanoes and earthquakes at their boundaries.
What are the most important points about Plate Tectonics?
The main points are: Evidence includes matching continents; Seafloor spreading adds crust; Plates move a few centimetres per year.
Why is Plate Tectonics useful?
Understanding Plate Tectonics helps you explain the environment around you and weigh up how people can protect it.
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 Earth & Environmental Science include Mountains and Landforms, Clouds and Precipitation, Weather Forecasting.