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SCIENCE: Show and Tell: Simple Machines (Pulley (Pulley uses wheels,…
SCIENCE: Show and Tell: Simple Machines
A simple machine is a machine that has one or no moving part
But it makes work easier
Wedge
Shape of a wedge
Comes to a point
The special shape of a wedge make it so that a wedge can cut things apart
Some things that we use everyday that has the shape like a wedge
Your front teeth
A shovel
Inclined plane
Looks like a slippery slide
We can use it to carry heavy things onto a truck
Screw
Use to hold things together
There are many places that we use screw
Lever
Is very important
There are many different kinds of lever
A lever always has a rod or bar
We can use lever on many things
Using as the handle of a hammer or a shovel
If we put 2 levers together, we can have a nut cracker or a scissors
Wheel and axle
We can use it as a skate board, roller skate...
Has four wheels attached to axles
There are many kinds of wheel and axles
You can do so much work with this machine
You can put something heavy on to move it easier
It will help you to use less force to move the thing
Pulley
Pulley uses wheels
Pulley are use to pull things
Pulley can pull things up, down or sometimes pull things side
Pulley will have a string around the wheel
If we have more pulleys, it will make the work easier
We use pulley in many places