Different Types of Rocks
We can look at rocks and see many of their differences on the surface. Some are black or grey. Some are large like mountains, while others are but pebbles in the sand. But real geologists, like the students in our class, classify rocks by more than what the average eye can see. How do mountains get so big? Why do diamonds look different from cobblestones if they're all just rock? Today we will explore a little more about what makes rocks all so different!