1. Takes millions of years to form.
2. Solid fossil fuel formed from ancient plants.
3. Heat produced from magma within the earth.
4. Energy from living organisms.
5. Electricity produced by moving water.
6. Energy generated by the movement of air.
7. Type of fossil fuel formed from ancient organisms that lived in swamps.
8. Type of fuel formed by once living things.
9. Cotton dresses and pants.
10. Another name for oil.