Across
- 4. What type of renewable energy could a fast flowing river produce?
 - 5. What type of energy does a piece of wood have?
 - 6. Heat from the earth is called what kind of energy?
 - 9. Biomass is made up of ....... matter?
 - 10. Solar panels need this to create electricity?
 
Down
- 1. Hydropower is a renewable source of energy which uses the force or energy of moving ..... to generate power.
 - 2. What type of energy are ocean waves?
 - 3. What fuel does bioengery use?
 - 7. Wind energy is converted to electricity using?
 - 8. Energy that can be constantly replenished?
 
