You're absolutely right! Earthquakes happen when tectonic plates, the large sections of Earth's crust, move along each other. Here's a more detailed explanation:

* Earth's Crust is Divided: The Earth's outer layer, the crust, is not one solid piece. It's broken up into these large, moving plates called tectonic plates.

* Plate Movement: These plates constantly move very slowly, sometimes grinding against each other, pulling apart, or colliding.

* Stress and Strain: The movement of these plates creates stress and strain on the rocks at their boundaries.

* Fault Lines: These boundaries are called fault lines, and they act as zones of weakness where the rocks can break.

* Sudden Release of Energy: When the stress becomes too great, the rocks along a fault line suddenly break and release a tremendous amount of energy. This release of energy causes vibrations that travel through the Earth as seismic waves, creating an earthquake.

So, earthquakes are the result of the dynamic nature of Earth's crust and the movement of these giant tectonic plates.