Yes, the speed of Earth's tectonic plates is very slow. They move at a rate of a few centimeters per year. That's about the same speed as your fingernails grow!

Here's a breakdown of the speed:

* Fastest: The Pacific Plate moves at about 15 centimeters (6 inches) per year.

* Slowest: Some plates move as slowly as 2 centimeters (0.8 inches) per year.

* Average: Most plates move around 2-5 centimeters (1-2 inches) per year.

While this seems slow, over millions of years these tiny movements have caused dramatic changes to the Earth's surface, including:

* The formation of mountains

* The creation of volcanoes

* The opening and closing of oceans

* The movement of continents

It's fascinating to think that these slow, but powerful, movements are constantly shaping the world around us.