Energy

2. A fuel such as coal, oil or natural gas formed from the remains of ancient organisms.
6. A natural resource that can be replaced or replenished, like wind or solar energy.
7. Transfer of energy through a material by particle vibration.
9. The unit of measurement for energy.

1. Long-term change in Earth’s climate, partly caused by carbon dioxide emissions.
3. A material that slows down the transfer of thermal energy.
4. Transfer of energy in fluids where warmer, less dense material rises and cooler, denser material sinks.
5. The ability to do work or cause change, stored or transferred in different ways.
6. Transfer of energy by waves, such as infrared radiation, without needing a medium.
8. How much energy an appliance uses every second, measured in watts.