CONVECTION CURRENT

Question 1

What is the order of asthenosphere and lithosphere?

Answer 1

lithosphere is above the asthenosphere

Question 2

What is the process of convection currents?

Answer 2

1. Tectonic plates float on the mantle
2. Radioactive decay of some elements generate heat
3. When the lower parts of the asthenosphere heat up, they become less dense and slowly rise
4. As they move towards the top of the mantle they cool down, becoming more dense and slowly sink.
5. This causes tectonic plates to move.