Why were simple machines invented?
To make lives easier.
How many simple machines are there? Name them.
5. Lever, wheel and axle, ramp, wedge, sсrеw.
Which invention do we use on many of our vehicles?
The wheel and axle.
A seesaw is an example of a simple machine. Which one is it?
A lever.
Explain how a lever works.
The board rests on a point in the middle. When you push down on one end of the board, the other end goes up.
How does the wheel and axle work?
An axle goes into the middle of a wheel, making it easy to turn.
Simple Machines in Or Daily Lives is a ____.
science article
fantasy
fiction
magazine article
Simple machines make our lives easier.
False.
True.
A slide is a lever.
True.
False.
The sharp edge of an axe pulls things together.
False.
True.
Scrеw helps to hold things tightly together.
True.
False.
What part of a car is a simple machine?
a wheel and axle
What is an example of a ramp in nature?
a hill or mountain
What is an example of a wedge we use for eating?
a knife or fork
Which inventions are wedges?
knife, fork, axe
Which inventions are screws?
jar lid, light bulb, pen
