Explanation Writing - Earthquakes

I'm going to tell you how an earthquake works. On the Earth's surface there are a dozen plates that move around the world. The Earth has different layers called the crust, mantle, outer core and inner core. The Earth's plates can move apart, towards and horizontally past each other. When the plates smash together the plates trigger an earthquake. P waves are the fastest and first waves to detect. S waves are the second waves they go towards sound and thirdly surface waves they run across the ground. They are the slowest and most dangerous. Now that's how an earthquake occurs.

By Marley
Year 4