How does the wheel and axle work?
An axle goes into the middle of a wheel, making it easy to turn.
What is an example of a ramp in nature?
a hill or mountain
A slide is a lever.
False.
True.
The sharp edge of an axe pulls things together.
True.
False.
How many simple machines are there? Name them.
5. Lever, wheel and axle, ramp, wedge, sсrеw.
Which inventions are screws?
jar lid, light bulb, pen
What part of a car is a simple machine?
a wheel and axle
A seesaw is an example of a simple machine. Which one is it?
A lever.
What are they?
wheelchair, jar lid, board, hammer
Simple machines make our lives easier.
True.
False.
Why were simple machines invented?
To make lives easier.
What is an example of a wedge we use for eating?
a knife or fork
Which inventions are wedges?
knife, fork, axe
Which invention do we use on many of our vehicles?
The wheel and axle.
Which inventions are wheels and axles?
bicycle, truck, doorknob, car, Ferris wheel
Simple Machines in Or Daily Lives is a ____.
science article
magazine article
fiction
fantasy
Scrеw helps to hold things tightly together.
True.
False.
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.
What do we do when we classify and categorize?
We group things that are similar.