Simple MachinesBy: Glizyl Luna

Wedge● A wedge is a machine

that pushes materials apart and cuts things.

● A kitchen knife is a wedge that cuts food and it is found in the kitchen

● A pair of scissors is also a wedge and it cuts paper and it can be found in my pencil case

Wheel and Axle● The wheel and axle

machines make it easy to move things by rolling them and reducing friction.

● A car is a wheel and axle because it makes it easier to move people from one place to another.

● A wheel barrow is a wheel and axle because it can move an object easier by rolling it anywhere.

Lever Levers are simple machines

that makes lifting weight easier by using a fulcrum to redirect force over a long distance.

A broom is a lever because the handle help make it easier to clean.

A screw driver is a lever be-cause the fulcrum is closer to the load which reduces the force to screw some-thing together.

Inclined Plane

● An inclined plane is a simple machine that makes it easier to move objects upward, but you have to go further horizontally.

● Stairs are inclined planes because they make it easier to go up and down each floor.

● A sidewalk ramp make objects easier to move and carry heavy objects out of a truck or car.

Screw● A screw turns rotation into

lengthwise movement and takes many twist which holds things together.

● A jar lid is a screw because it turns and takes many twist to open and close it.

● A light bulb is a screw because it has a turning rotation that takes a twist to provide light.

Pulley

● A pulley makes lifting things with a rope easier by redirecting force and the addition of additional pulleys.

● The window blind is a pulley because it helps pull up the shade.

● The garage door is also a pulley because it helps lift the door so cars and other big objects can go through.

Compound Machines● A compound machine is

combining two or more simple machines to work together.

● A bike is a compound machine because the wheels of the bike is a wheel and axle and the gear shifts and bike handles are levers.

● A garden hoe is a complex machine because the handle is a lever and the blade is a wedge.