Slide 1: Simple Machines
Simple Machines Micron Foundation K-12 Program February 9, 2016 ©2012 Micron Foundation, Inc. | 1
Slide 2: What Will We Discover?
What Will We Discover? ▶ What a simple machine is ▶ How we use simple machines in our daily lives ▶ The different types of simple machines ▶ What is the definition of work ▶ The importance of simple machines February 9, 2016 ©2012 Micron Foundation, Inc. | 2
Slide 3: What is a Machine?
What is a Machine? What the dictionary says: Machine: A system or device which uses energy to perform a task. A system that helps you do work. Simple Machine: A machine with few or no moving parts. A non-powered device that either multiplies or changes the direction of a force. February 9, 2016 ©201
Slide 4: Types of Simple Machines
Types of Simple Machines ▶ Lever Inclined plane ▶ Pulley Screw ▶ Wheel and Axle Wedge ▶ Gears February 9, 2016 ©2012 Micron Foundation, Inc. | 4
Slide 5: What Simple Machines do you see?
What Simple Machines do you see? February 9, 2016 ©2012 Micron Foundation, Inc. | 5
Slide 6: Today's Focus
Today’s Focus Lever Pulley Gears + Wheel & Axle February 9, 2016 ©2012 Micron Foundation, Inc. | 6
Slide 7: Levers
Levers ▶ A lever is a simple machine used to lift, cut, or open objects. ▶ Parts of a lever: Straight rod or arm that pivots on a point called a fulcrum, a load and an effort (or force) ▶ Three types of levers: February 9, 2016 ©2012 Micron Foundation, Inc. | 7
Slide 8: Examples of Levers
Examples of Levers ▶ Door on hinges ▶ Crowbar ▶ Seesaw ▶ Fishing rod ▶ Hammer ▶ Wheelbarrow ▶ Bottle opener ▶ Wrench ▶ Fork ▶ Stapler ▶ Nutcracker ▶ Scissors ▶ Shovel February 9, 2016 ©2012 Micron Foundation, Inc. | 8
Slide 9: Pulleys
Pulleys ▶ A pulley can change the direction or size of the effort force, making it easier to lift objects to a higher place. ▶ A pulley is made up of a grooved wheel that turns around an axle with a rope passing through it. ▶ Three types of pulleys: Fixed Moveable Combined February 9, 2016 ©20
Slide 10: Examples of Pulleys
Examples of Pulleys ▶ Flag pole Window washing ▶ Mini-blinds platform Ski lift ▶ Elevator Rigging on a ▶ Winch sailboat ▶ Wishing well The swing at the ▶ Crane Discovery Center February 9, 2016 ©2012 Micron Foundation, Inc. | 10
Slide 11: Wheel and Axle
Wheel and Axle ▶ The wheel and axle consists of a large wheel rigidly secured to a smaller wheel or shaft, called an axle ▶ A force applied to the wheel is multiplied when it is transferred to the axle, which travels a shorter distance than the wheel. ▶ The wheel and axle can be thought of as a type
Slide 12: Examples of Wheel and Axle
Examples of Wheel and Axle ▶ Pencil sharpener ▶ Bike wheels ▶ Rolling pin ▶ Furniture casters ▶ Windmill ▶ Fan ▶ Roller blades ▶ Door knob ▶ Dishwasher rack rollers ▶ Skate board ▶ Ferris Wheel February 9, 2016 ©2012 Micron Foundation, Inc. | 12
Slide 13: Gears
Gears ▶ Gears are used to slow things down or speed things up, which also changes the force required. ▶ Gears are used to change direction. ▶ Gear description: Toothed or pegged wheels that fit together to change direction or transmit motion and force February 9, 2016 ©2012 Micron Foundation, Inc.
Slide 14: Examples of Gears
Examples of Gears ▶ Clock ▶ Bicycle gears ▶ Automobile ▶ Guitar tuning pegs ▶ Drill ▶ Hand-mixer February 9, 2016 ©2012 Micron Foundation, Inc. | 14
Slide 15: Machines help us to do Work. What is Work?
Machines help us to do Work. What is Work? In Science, Work is the amount of energy necessary to move an object. It is defined as a Force Applied Through a Distance W =F xD ork orce istance (times) Force = exertion of physical power February 9, 2016 ©2012 Micron Foundation, Inc. | 15
Slide 16: Activity Stations and Safety
Activity Stations and Safety ▶ Stations Lever ▶ Safety Pulley Follow instructions Gears / Wheel and axle Keep hands to your sides Wait your turn Only do actions as instructed Have FUN! February 9, 2016 ©2012 Micron Foundation, Inc. | 16
Slide 17: Foundation
Foundation