Simple Machines

# Simple Machines

## Simple Machines

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##### Presentation Transcript

1. Simple Machines First Grade Claire Waldron Bascomb Elementary School

2. What do you know about simple machines?

3. Vocabulary . Compound Machine:   Two or more simple machines working together to make work easier. Examples: Wheelbarrow, Can Opener, Bicycle • Force : You are doing work when you use a force to cause motion. Machines make work easier, but they need energy to do work. A person is usually the source of energy for a simple machine. A person uses a force to operate a simple machine. A force is a push or pull. The force applied to to the machine is called work input or effort force. •  Work: You are doing work when you use a force to cause motion. To measure the amount of work you do, multiply the force times the distance the object moved.

4. Simple Machines

5. There are six kinds of simple machines. • Lever • Wheel and Axle • Pulley • Screw • Inclined Plane • Wedge

6. Lever • A lever is a stiff bar that rests on a support called a fulcrum which lifts or moves loads.

7. Wheel and Axle • A wheel with a rod, called an axle, through its center lifts or moves loads.

8. Pulley • A pulley is a simple machine that uses grooved wheels and a rope to raise, lower or move a load.

9. Screw • A screw is an inclined plane wrapped around a pole which holds things together or lifts materials.

10. Inclined Plane • An inclined plane is a slanting surface connecting a lower level to a higher level.

11. Wedge • A wedge is an object with at least one slanting side ending in a sharp edge, which cuts material apart.

12. Watch a video about simple machines. Brain Pop Video

13. Click to see examples of each simple machine. • Pulleys • Levers • Wedges • Wheels and Axles • Screws • Inclined Planes

14. Learn more about Simple Machines. • Simple Machines Information and Quiz • Is this a simple machine? What kind of simple machine? • Edheads – Simple Machines game