Across
- 3. THE FORCE THAT ATTRACTS SOMETHING TOWARDS THE CENTRE OF THE EARTH
- 5. A RAMP THAT IS SEEN EVERYWHERE
- 6. THE ACTION OF ONE SURFACE OR OBJECT RUBBING AGAINST ANOTHER
- 7. THE TOP OF A BOTTLE CAP IS .........
Down
- 1. THE ENERGY FROM THE SUN
- 2. A MACHINE THAT MAKES OUR LIFE EASIER
- 4. A ROPE THAT MOVES OVER A WHEEL