What are the three main types of rocks?
What happens when a rock is weathered and eroded?
What type of rock can contain fossils?
When rocks are undergo extreme heat and pressure deep within the Earth, they can change into which type of rock?
What type of rock has wavy layers?
In the rock cycle, what type of rock can form directly from molten magma or lava?
What process involves the melting of rocks and the formation of molten magma?