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