Scaled Diagram of Earth

CGP Earth Science (Years 5–6) • 13 Interactive Items

13 Items Total

Use the dropdown menus next to each pointer to identify the layer shown on the scaled cross-section.

1 Layer 1 (Outermost):

2 Layer 2 (Thickest 2900km):

3 Layer 3 (Liquid 2200km):

4 Layer 4 (Centre solid):

Layer	Average Thickness	Solid or Liquid	Material	Average Temperature (°C)
Crust	18 km	Solid	Granite & basalt	14 °C
Mantle	2,900 km	Mostly solid, some molten rock ('magma')	Silicate rocks	2,000 °C
Outer Core	2,200 km	Liquid	Iron & nickel	4,500 °C
Inner Core	1,250 km	Solid	Iron & nickel	6,000 °C

5. Which layer of the Earth is the thinnest?

6. Which layer of the Earth is liquid?

7. What two metals make up both the outer core and the inner core?

8. Which layer reaches the highest temperature of 6,000 °C?

9. Which layer of the Earth is the thickest (2,900 km)?

10. What type of rock is predominantly found in the Earth's crust?

11. What type of rock makes up the majority of the Earth's mantle?

12. Calculate the approximate distance from the surface to the centre of the Earth (Earth's radius in km: 18 + 2900 + 2200 + 1250):

13. Fascinating Fact (Worksheet Research Question): Write down an interesting fact you discovered about the Earth's structure: