Bill Nye Rocks and Soil

What is the outermost layer of the Earth called?

What type of rock is formed from the cooling of magma?

What is the process by which rocks are broken down into smaller pieces?

What is the term for the movement of soil from one place to another?

Which type of soil is best for growing plants?

What is the process by which rocks are changed by heat and pressure?

What is the hardest mineral found in rocks?

What is the term for the slow movement of soil down a slope?

What is the process by which rocks are broken down by chemical reactions?

What is the term for the layer of soil that is rich in organic matter?