What is something that shakes a lot?

An earthquake is a natural phenomenon that shakes the ground, often causing significant damage. It occurs when there is a sudden release of energy in the Earth's crust, generating seismic waves. The intensity of the shaking can vary depending on the earthquake's magnitude and depth, as well as the distance from the epicenter. Other examples of things that shake a lot include heavy machinery, certain types of vehicles, or even a washing machine during a spin cycle.