A longer inclined plane allows you to use ___________ force to move an object.
What is less?
200
The force that pulls objects toward the earth.
What is gravity?
200
Wheel and axles with "teeth" that work together.
What are gears?
200
The weight of the object being moved.
What is the load?
200
A wheel with a rod running through it.
What is a wheel and axle?
200
A block an tackle allows you to use ____________ force when lifting an object by moving the rope a greater distance.
What is less?
300
An object moves when the forces acting on it become _______________.
What is unbalanced?
300
The amount of effort needed on a lever is determined by the distance between the effort and the __________________.
What is the fulcrum?
300
The force that causes an object to move.
What is effort?
300
A bar that turns on a point.
What is a lever?
300
A fixed pulley does not change the amount of effort needed to move a load, but it does make work easier because it changes the ______________ of the force needed to lift it.
What is direction?
400
A change in an objects position.
What is motion?
400
It takes ___________ force to move a heavier object than to more a lighter object.
What is more?
400
An inclined plane wound around an axle.
What is a screw?
400
One or more inclined planes used to force things apart.
What is a wedge?
400
This is done when a force moves an object over a distance.
What is work?
500
The force that resists the movement of objects against each other.
What is friction?
500
When you use ____________ force on an object, it will have a greater change in position.
What is more?
500
This type of simple machine uses both fixed and movable pulleys.