This is a simple machine that is a wheel on an axle with a rope around the wheel that is used to pull things.
What is a "Pulley"?
200
The shaft on which the wheel revolves.
What is an "axle"?
200
This happens when two objects rub together. It's the force that resists the motion.
What is "friction"?
200
A wheel with teeth that matches up with the teeth of another wheel.
What is a "gear"?
200
This is a simple machine that is a rigid bar or arm that pivots on a fulcrum point.
What is a "Lever"?
200
This is a substance that reduces the friction between two surfaces.
What is a "lubricant"?
300
This is a simple machine that is an inclined plane that wraps around a stick of metal.
What is a "Screw"?
300
This consists of two inclined planes that come together in a thin edge. It is used to split or separate objects.
What is a "Wedge"?
300
This is the transfer of energy from one thing to another to make it move.
What is "Work"?
300
When I move something towards me.
What is a "pull"?
300
When I use force to move something away from me.
What is a "Push"?
400
Which two are examples of simple machines?
a. combine, bicycle
b. fan, elevator
c. inclined plane, wedge
d. vacuum cleaner, television
What is "Inclined Plane and Wedge"?
400
In which example is work begin done?
A A person looks at a painting in a museum.
B Three adults push on a stalled car but it does not move.
C A child reads a page in a book.
D A soccer player kicks a ball into the goal.
What is D-A soccer player kicks a ball into the goal.
400
Simple machines are useful because they let us do the same amount of work with less ___________.
What is effort or force?
400
A doorknob and a faucet handle are examples of ______________.
What is "Wheels and Axles"?
400
An object in motion ________________________.
What is "stays in motion"?
500
An object at rest __________________________.
What is "stays at rest"?
500
A can opener includes a wedge, gears, a lever, and a wheel and axle. The can opener is an example of a ___.
A. simple machine
B. screw
C. compound machine
D. combine
What is C - compound machine
500
This is a downward force on objects.
What is "gravity"?
500
All magnets have a _____________ and a ____________.
What is a north pole and a south pole.
500
When I put the south pole of two magnets together they will __________.