The inner structure of the Earth
Answers are for parents and teachers.
1
Write one sentence for each of the shells: atmosphere, hydrosphere, lithosphere, biosphere.
Atmosphere – air; hydrosphere – water; lithosphere – rock; biosphere – the shell of life.
2
The surface temperature is +8 °C; at 2 km depth, rising 30 °C per kilometre, what is the temperature in °C?
68
3
The Earth’s radius is about 6371 km. The deepest borehole reached 12 km. How many km remain to the centre?
6359
4
Draw a section of an apple or carrot and relate its parts to the Earth’s layers (cut with an adult).
The thin outer part resembles the crust, the middle the mantle and the centre the core.
5
Why is the core thought partly liquid and not completely solid?
The way earthquake waves travel shows that the outer core is liquid.