simple machines
Across
- 1. how many simple machines are there?
- 2. a point that objects pivot on
- 5. what simple machine is a spiral staircase?
- 6. what simple machine is a seesaw?
- 7. the 2 types of fulcrums
Down
- 1. any device that makes work easier
- 3. what simple machine is a knife?
- 4. a beam or bar that pivots on a point