Making Things Work

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# Making Things Work - PowerPoint PPT Presentation

Making Things Work. Simple Machines. Melody Wright 4 th grade Power Point ECE 8842, section 4. Georgia Performance Standards Types of Simple Machines Organizer Inclined Plane types of inclined planes Wedge types of wedges Levers types of levers Screws types of screws Pulleys

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## PowerPoint Slideshow about 'Making Things Work' - erol

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### Making Things Work

Simple Machines

Melody Wright

ECE 8842, section 4

Georgia Performance Standards

Types of Simple Machines Organizer

Inclined Plane

types of inclined planes

Wedge

types of wedges

Levers

types of levers

Screws

types of screws

Pulleys

types of pulleys

Wheels and axles

types of wheels and axles

Other Types of Simple Machines

Simple Machines in Our Homes

Simple Machines at Work

Pulleys and Inclined Planes

Levers

Resources

How Do You Move a Lion?

Closing Slide

Georgia Performance Standard
• S4P3. Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object.
• a. Identify simple machines and explain their uses. (lever, pulley, wedge, inclined plane, screw, wheel and axle)
Inclined Plane
• An inclined plane is a flat surface set at an angle to another surface.

Where do you find inclined planes?

How might you use an inclined plane?

Inclined Plane

An inclined plane is used to make moving things up and down easier.

Inclined planes are ramps, slides, and stairs; many others, too.

Wedge
• A wedge is two inclined planes stuck back to back. A wedge is wide at one end and tapers to a point at the other.

Where might you find wedges?

How might you use a wedge?

Wedge

Wedges are used to separate things by cutting, piercing, or splitting the objects.

Knives, doorstops, saws and scissors are all types of wedges.

Levers
• A lever is a bar that moves on or around a fixed point.

Where do you find levers?

How can you use a lever?

Levers

Levers, levers everywhere!

A lever is used for raising or moving heavy objects.

See-saws, push bars, hammers, bottle openers, and pop-tops on soda cans are all levers!

Screw
• A screw is an inclined plane that curves around a pole.

Where do we find screws?

How do we use screws?

Screw

A screw is used to hold things together.

Screws are all around us! Bottle tops, bolts, and even the end of light bulbs are all types of screws!

Pulley
• A pulley is a rope over a wheel. It changes the direction of the force you use.

Where do we find pulleys?

Pulley

A pulley makes it easier to move objects up, down, and across a long distance. The more pulleys you combine, the less force you need to move an object.

A flagpole is a type of pulley.

Wheel and Axle
• A wheel and axle is a machine that has a bar through the middle of a wheel.

Where do we find wheels and axles?

Why do we use wheels and axles?

Wheel and Axle

When the wheel is turned, the axle turns, too.

Doorknobs, tape dispensers, pencil sharpeners, and automobiles all use wheels and axles.

Simple Machines in Our Houses

Annie’s House

Anthony’s House

Simple Machines at Work

Pulleys and Inclined Planes

Resources

Websites

• www.harcourtschool.com/activity/machines/simple_machines.htm
• www.kidskonnect.com/SimpleMachines/SimpleMachinesHome.html
• http://www.hep.uiuc.edu/home/mats/wg2004.html

Books

• Simple Machines by Allan Fowler
• The Wheeling and Whirling Around Book by Judy Hindley
• How Do You Lift a Lion? By Robert E. Wells (see the book cover on the next slide)