How is a new rock formed
What is the temperature at the Earth's Core
How many volcanoes are there on Earth
Find the answers to these questions and many more as you take a closer look at The Rock Cycle - by numbers From hot molten rocks deep beneath our feet to towering mountain ranges and the buildings in our towns and cities - rocks are all around us. Discover more about the different types of rock and how they are formed and constantly changing as you take a look at the rock cycle in action