CLEAN:What are the causes of the Yushu earthquake?

The video explains the movement of Earth's crust, focusing on the collision between India and Asia, which causes earthquakes. It discusses the randomness of earthquakes, the impact on human structures due to inadequate building standards, and the historical northward movement of India. This movement has led to the formation of the Tibetan mountains and ongoing geological activity.

Explain the relationship between the movement of the Earth's crust and the occurrence of earthquakes.

What uncertainties exist regarding the causes of earthquakes as mentioned in the text?