What are the three main types of rocks?

What is an igneous rock?

What is an intrusive igneous rock?

What is an extrusive igneous rock?

What is a sedimentary rock?

What part does weathering and transportation play in the rock cycle?

What is a metamorphic rock?

What is metamorphism?

Where are two places where metamorphism can occur?

What is the difference between a rock and a mineral?

What is renewable energy?

List six types of renewable energy sources.

What is Biomass and why is it renewable?

How do we use geothermal energy?

How do we use wave or tidal energy to produce electricity?

What is nonrenewable energy?

List three forms of nonrenewable energy sources.

Why do we call coal, oil and natural gas fossil fuels?

What are fossil fuels made of?

How does a power plant produce energy?