SIX SIMPLE MACHINES

LEVER

• Lever: a simple machine that has a free
• Moving beam or stick.
• Examples: teeter totter and tweezers.

INCLINED PLANE

• A sloping surface to make work moving
• Up easier.
• Examples: ramp, and hill

PULLEY

• A rope that rides on the rim
• Of the wheel that is grooved
• Examples:sailboat and crane

WHEEL AND AXLE

• Wheel attached to an axle
• Examples: bikes and cars

WEDGE

• Two inclined planes put together
• To cut things in half or stop them
• Example: doorstop and axe

SCREW

• An inclined plane wrapped around
• A cylinder
• Examples: faucet, and jar lid.

COMPOUND MACHINES BIKE

• A bike is a compound machine because it
• Has a lever which is front where you turn,
• Wheel and axle from the wheels that turn on the axle,
• The screws to hold the wheels in and a pulley which is the chain and the
• Peddle to move you weight.

COMPOUND MACHINE, SHOVEL

• Your arm and shovel are the lever because
• Your elbow is pivoting and your arm and shovel are
• The lever arm. Also the shovel blade is a wedge because
• It cuts into the dirt to get the dirt out.