Across
- 2. i have no idea
- 4. contain protons and electrons
- 8. the measurement of power that a batter produces
- 9. protons and "......"
Down
- 1. invented by Simon ohm
- 3. electrons and "....."
- 5. fossilised tree sap
- 6. a track on which cars race
- 7. the directional and planned flow of rivers