🌍 Earth and geography
Layers of the Earth
A cut-away Earth showing crust, mantle and core.
Layers of the Earth
💬 Questions and answers
1What am I looking at?
Answer: Earth cut open to reveal its internal layers.
2What are its parts? (click a part to identify it)
Answer: Crust, mantle, outer core and inner core.
3How does it work?
Answer: Heat from the core drives slow movement in the mantle, which moves the plates of the crust and causes earthquakes, volcanoes and mountains.
4Why is it important?
Answer: It explains landforms, earthquakes and volcanoes, and where minerals come from.
5What happens if I change something? (use the sliders)
Answer: Rotate to look into the cut-away and click each layer.
6What should I remember for the exam?
Answer: Crust 5–70 km thick; mantle to about 2,900 km; outer core liquid; inner core solid (iron–nickel) because of very high pressure. Radius of Earth ≈ 6,371 km.