Across
- 2. Black rock dug from the ground and burned for energy.
- 4. Energy source made from ancient plants and animals
- 5. Tiny parts of an atom that flow through a wire as electricity
- 9. Clean energy made by using the power of falling water
- 11. What we call oil before it gets turned into gasoline
- 13. The unit used to measure temperature on a normal thermometer
- 16. Dark clothes do this to sunlight, making you feel warmer
- 20. What is it called when energy sources like coal and oil will run out one day
- 21. A material like metal that lets heat pass through easily
- 23. Energy sources like wind and sun that never run out
- 26. A machine that spins to turn movement into electrical energy
- 27. A dark square on a roof that turns sunlight into electricity
- 28. The closest star that warms up our entire planet
- 30. Moving air
- 31. Organic matter (wood or chopped waste)
- 32. A device that moves hot air or water around a house
- 34. A big machine in the basement that burns fuel to heat the house
Down
- 1. An object in a room that gets filled with hot water to warm the air
- 3. Something that is burned to produce energy
- 6. The loop created when warm air rises and cold air sinks
- 7. The way heat moves when two things touch each other
- 8. The scientific word for burning something
- 10. A wheel with blades that spins when steam pushes against it
- 12. This rises to the ceiling because it is light and less dense
- 14. A thick black liquid fossil fuel used to make gasoline
- 15. A giant fan that uses the wind to make electricity
- 17. Fluffy material put in walls to stop heat from escaping
- 18. Heat energy that comes from deep inside the Earth
- 19. Energy that moves from a hot object to a colder object
- 22. The way heat moves through liquids and gases
- 24. The little box on the wall is used to change the house temperature
- 25. Heat that travels through space in waves, like from a campfire
- 29. Another word for farming
- 33. Light colours do this to heat rays, keeping you cool