Fuel Sources

Edit Answers
123456789
Across
  1. 1. a chemical, which burns giving out energy.
  2. 3. process where plants make food from the energy in sunlight.
  3. 5. formed from the dead remains of trees and plants that lived in forests and swamps about 300 million years ago.
  4. 7. remains of plants or animals, which died millions of years ago and got trapped in rock.
  5. 8. term to describe a resource that, once used up cannot be replaced.
Down
  1. 1. a fuel which has been made from the remains of dead plants and animals, which died millions of years ago.
  2. 2. green pigment in plants
  3. 4. another name for burning.
  4. 6. a reaction that gives out heat energy
  5. 9. formed from the dead remains of sea animals and plants called plankton.