Across
- 3. Energy moving from one object to another
- 8. Energy changing from one form to another
- 11. Energy of moving objects
- 14. Energy stored in food and fuels
- 18. Space where radiation can travel but conduction cannot
- 19. Heat transfer through direct contact
- 21. The idea that energy cannot be created or destroyed
Down
- 1. Energy stored due to height
- 2. A material that slows or stops heat or electricity passing through
- 4. Heat transfer through the movement of liquids and gases
- 5. What vibrates faster when an object heats up
- 6. Energy lost, often as heat or sound
- 7. How tightly packed particles are; changes when fluids heat up
- 9. A device like a fridge, toaster or heater
- 10. Energy stored in stretched or squashed objects
- 12. The energy we want from a device
- 13. Heat transfer by waves, no particles needed
- 15. How well something turns input energy into useful output
- 16. Liquids and gases; convection happens in these
- 17. Diagram showing energy transfers and transformations
- 19. A material that allows heat or electricity to pass through easily
- 20. Why wasted energy often becomes heat; a force that opposes motion