1. Lesson 3: How are work and Motion related?

2. Work – the result of a force MOVING an object.

3. Lesson 3: How are work and Motion related? When you push or pull something and it moves you have done work.

4. Lesson 3: How are work and Motion related? If you push or pull on something and it does not move you have not done work.

5. Lesson 3: How are work and Motion related? Simple Machine – a machine made of one or two parts. Simple Machines make work easier.

6. Types of Simple Machines Inclined Plane A flat surface with one side higher than the other. (a ramp)

7. Types of Simple Machines Wheel and Axle A wheel attached to a rod.

8. Types of Simple Machines Wedge A simple machine with slanted sides.

9. Types of Simple Machines Lever A stiff bar that rests on a support called a fulcrum which lifts or moves loads. (the longer your lever the easier the lift)

10. Types of Simple Machines Screw An incline plane wrapped around a rod.

11. Types of Simple Machines Pulley A simple machine that uses a rope and a wheel to move an object. (The more pulleys, the longer the rope, the easier it is to pull)

12. Lesson 3: How are work and Motion related? Compound Machine - a machine made of two or more simple machine.

13. Lesson 3: How are work and Motion related? Complex Machine - a machine made up of many compound and complex machines.