Across
- 6. A change of energy from one form into another.
- 8. The energy stored within a body or a system due to a force acting on it or on the particles in it.
- 9. The energy released during a chemical change.
- 10. Any energy that has been transformed and left a system.
- 11. Carbon fuels that were formed long ago from the remains of plants and animals (Coal, Oil, etc.).
Down
- 1. Organic matter, especially plant matter which can be converted to fuel.
- 2. The principle that energy can not be created nor destroyed but only changed from one form to another.
- 3. The capacity to do work or make things happen.
- 4. The positive or negative effects of activities on the environment.
- 5. The careful use of energy so that little of it is wasted as unwanted energy forms.
- 7. Any natural resource that can be replenished naturally with the passage of time.
- 8. Contamination of air, water or soil by materials or energy that cause harm to human health or the environment.