Answer:

The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.

Explanation:

Remember, Drop, Cover, and Hold On.

Get down on the ground under a table or desk. Keep your emergency preparedness kit nearby so you'll have the supplies you need