Today’s Agenda…9/26 Bellringer: What kind of graph is used to show the change in distance of an object over time? Review simple machine chart Edheads Website.

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Presentation transcript:

Today’s Agenda…9/26 Bellringer: What kind of graph is used to show the change in distance of an object over time? Review simple machine chart Edheads Website

Simple Machines Chart Study Pack #16

The Pulley A grooved wheel with a rope Changes the direction of the input force Page 147 Examples: window shade, well, sail boat, elevator

The Lever A rod or plank that pivots on a fixed point Allow you to apply less force Page 148 Examples: using a screwdriver to open a can, a wheelbarrow, a bottle opener

The Wheel and Axle Two round objects that are attached by a bar and rotate together Allow you to apply less force Page 149 Examples: door knob, roller skates, car

The Inclined Plane Sloped surface Allow you to apply less force Page 149 Examples: ramp, slide, stairs

The Wedge A moving inclined plane with one or two slopes Changes the direction of the input force Page 150 Examples: knife, axe, teeth, zipper

The Screw An inclined plane wrapped around a pole Changes the direction of the input force Page 150 Examples: spiral staircase, jar lid, key rings

Gear Toothed wheels that fit into one another Allow many wheel and axles to turn at once Examples: clocks, toys

Compound Machine A combination of simple machines Example: pencil sharpener

Edheads www.edheads.org

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