Inside Earth
I can describe the structure of Earth and how the pattern of earthquakes and volcanoes relate to Earth's tectonic plates.
- Year 8
Inside Earth
I can describe the structure of Earth and how the pattern of earthquakes and volcanoes relate to Earth's tectonic plates.
Lesson details
Key learning points
- Earth is made up of four main layers: the inner core, outer core, mantle and crust.
- Together the upper mantle and the crust form Earth’s rigid outer layer: the lithosphere.
- The lithosphere is broken into large sections or tectonic plates.
- Most earthquakes and volcanoes occur at plate boundaries.
Keywords
Pressure - a force pushing or pressing on a given area
Density - density is the mass of something compared to its volume
Tectonic plate - the huge pieces that Earth’s crust is broken into
Plate boundary - the point where two tectonic plates meet
Common misconception
Earthquakes and volcanoes happen on tectonic plates.
Tectonic plates cover the whole world, this would mean they happen everywhere. The majority of earthquakes and volcanoes occur at plate boundaries (where two plates meet), though there are some which happen away from boundaries.