Tectonic plates
I can describe evidence of how we know tectonic plates move across the surface of Earth.
Tectonic plates
I can describe evidence of how we know tectonic plates move across the surface of Earth.
Lesson details
Key learning points
- Occurrences of earthquakes and volcanic eruptions suggest Earth’s layers are not static but interact with each other.
- Evidence, such as rock formations and fossils, supports the idea that the continents were once all joined up.
- Earth’s crust is broken into pieces known as tectonic plates, which move very, very slowly.
- Plate tectonics is a scientific theory that explains how tectonic plates move and interact with each other.
- Plate tectonics help scientists better understand and predict changes to Earth’s surface.
Common misconception
Some pupils (and teachers and even textbooks) suggest that plate movement is due solely to convection currents.
Stress that the understanding of what drives of tectonic plate moment is still developing; using demonstrations to reinforce the current understanding of slab pull and ridge push are helpful. Avoid any demos that reinforce ideas the mantle is liquid.
Keywords
Continental drift - A theory that proposed Earth's continents were once one landmass and gradually drifted apart over time.
Continental crust - Parts of Earth's crust that are found below landmasses is referred to as continental crust.
Oceanic crust - Parts of Earth's crust that are found below oceans is referred to as oceanic crust.
Tectonic plate - A tectonic plate consists of Earth's crust and the uppermost mantle that lies beneath it.
Plate tectonics - A theory that explains why continental landmasses move due to tectonic plates.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
Exit quiz
6 Questions
Occurs at boundaries of tectonic plates, involves eruption of magma.
Sudden shaking of the ground caused by movements of tectonic plates.