Across
- 3. used to communicate with another person
- 5. does not let us float in air
- 6. something that flows through wires
- 7. provides warmth for any living thing.
- 8. it can be used to harm or it can be used to recharge your mobile
- 11. keeps earth is orbit
- 12. unit used to measure heat
- 13. unit to measure the amount of electricity
- 14. something which is in motion
- 15. uses the light of the sun to make electricity
- 17. humans need it to live
- 18. unit to measure sound
Down
- 1. when the atom is split it makes a huge reaction.
- 2. when two of them are put very close together they attract immediately
- 4. has the ability to do something
- 6. what this whole crossword puzzle is all about
- 9. it is used in everyday house hold appliances
- 10. unit for measuring magnetic energy
- 15. gives us light and heat
- 16. its the travel of photons