Show:
General
Lever
Inclined Plane
Pulley/Wedge
Wheel and Axle/Screw
100

This is a force that changes the motion of an object.

work

100
The object being lifted is the __________.
What is load?
100
Another name for an inclined plane is a ____________.
What is ramp?
100
Here at school, you could see a pulley on a ______________.
What is flagpole?
100
The wheel and axle is made up of two parts: the wheel that turns on a post, which is called the __________.
What is axle?
200

You use a force to change the ________________ of an object.

direction

200
The push or pull that turns a lever is the ____________.
What is force?
200
If you use an inclined plane, the distance is longer, but it takes less _______________.
What is effort?
200
The pulley uses a ____________ and rope to lift a load.
What is wheel?
200
You create a screw when you wrap on inclined plane into a _______________ around a pole.
What is spiral?
300

This is a tool that makes work easier to do.

machine

300
A lever is a board or bar that moves on a _______________.
What is fulcrum?
300
An inclined plane is a simple machine that is a flat surface that is ___________ at one end.
What is higher?
300
Two inclined planes placed back to back make this simple machine.
What is a wedge?
300
Using a screw takes ______________ force than pounding a nail.
What is less?
400

Using a machine allows us to use ____________ force to move something.

less

400
The point where the lever turns is the _____________.
What is fulcrum?
400
The inclined plane is a simple machine that is a ___________________ that is higher at one end.
What is flat surface?
400
In a wedge, force is used to raise an object or _____________ the objects apart.
What is split?
400
In a wheel and axle, the wheel makes a large circular movement, and the axle makes a ____________ movement.
What is smaller?
500

A simple machine is a machine with _________________ moving parts.

few or no

500
A lever can let you change direction of a force or it can change the amount of ______________ needed.
What is force?
500
Scientists think inclined planes may have been used to build the _______________ because the blocks were too heavy to move straight up.
What are pyramids?
500
A _________________ pulley makes work easier than a one-wheel pulley.
What is two-wheel?
500
Just like an inclined plane, a screw moves a longer distance, but less ____________ is needed.
What is effort?