simple machines
TRANSCRIPT
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Simple MachinesBy: Glizyl Luna
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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
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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.
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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.
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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.
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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.
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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.
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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.