Simple Machines
Across
- 2. Two wheels of different sizes that rotate together (doorknob).
- 3. Groved wheel with a rope or chain running along the groove (flagpole).
- 5. Moving inclined plane with 1 or 2 sloping sides (axe).
- 6. Inclined plane wrapped in a spiral around a cylinder.
Down
- 1. Sloping surfaces used to raise objects (ramp).
- 4. a bar, free to pivot about a fixed point (wheel barrow).