Across
- 2. allows peole to talk over distances.
- 4. is used to make many machines
- 7. flys and carrys people.
- 8. trnasports people using roads.
- 9. makes cars.
Down
- 1. used to power cars and greas machines
- 3. provides power.
- 5. powered by coal.
- 6. carries human voices.