Find out amazing facts and try some quizzes all about planet Earth, from the highest mountains to the longest rivers, the deepest oceans, and the largest deserts.

The rock cycle is the long, slow journey of rocks down from the Earth’s surface and then back up again.

This week is all about the rock cycle: the natural process of rocks being turned into other kinds of rocks.

After playing a board game to learn how to differentiate the three ways rocks can form, students analyze maps of local topography, water sources, and volcanic activity, to better understand how geology affects a given region. They also experience scale, recognizing geologic processes as fast or extremely gradual.