Question

What is an earthquake

Answer 1

When there is sudden shake in earth's tectonic plates or have displacement between them is called earthquake

Answer 2

an earthquake is a natural disaster in which due to the sudden movement of the tectonic plates under the earth's crust due to some disturbance . because of this a huge amount of energy is passed from the point of disturbance to the top which causes the quaking or shaking of the earth or land above the tectonic plates.this is a huge amount of energy and that is why a lot of damage is caused

hope it is helpful
bhavya