Across
- 2. The invention of the spinning ____________ made it easier to spin cotton.
- 5. A lever is a bar that lifts or moves a load by applying ____________ at one point.
- 7. A complex machine is made up of __________ simple machines.
- 8. What are the spiral grooves and ridges On a Screw called _____________.
- 9. An axe and chisel is an example of a ____________.
Down
- 1. A _____________ is used in Crane to lift heavy objects.
- 3. A complex machine that has a Pulley and inclined plane
- 4. Any tool that help us reduce the effort to perform a task is called a ____________.
- 6. A simple tool used to open cans is called a ___________ .