This is a push or a pull on an object. An example of an invisible type of this that occurs everyday is called ________.
What is force. Example is gravity.
100
A straight rod or board that turns on around a fixed point.
What is a lever
100
A sloped surface that helps you move something to a higher or lower level.
What is an inclined plane.
100
These two simple machines have the same disadvantage - to use less effort force, you need to move a greater distance.
What is an inclined plane and a screw.
100
This is why compound machines are so helpful.
What is because it combines the mechanical advantages of two or more simple machines.
200
These two things are involved in making work happen.
What is force and movement.
200
This simple machine can have one or two inclined planes designed to lift, stop, or split objects apart.
What is a wedge.
200
A inclined plane that is wrapped around a central core to form a spiral.
What is a screw.
200
This simple machine allows you to lift a heavy object with less force, although you may have to turn the handle several times to get the pail to the top.
What is a wheel and axle.
200
A conveyor belt is made up of these two simple machines.
What is a wheel and axle and an inclined plane.
300
This slows down objects and can make objects harder to move.
What is friction.
300
The fixed point on which a lever turns.
What is the fulcrum.
300
This simple machine helps you move, turn, and lift things. Sometimes it does more than one of these things at once!
What is a wheel and axel.
300
This type of lever gives you a mechanical advantage by changing the direction of the force you use.
What is a first-class lever.
300
If you wanted to make it easier to lift a heavy object, you could combine these two simple machines.
What is an inclined plane and a (fixed) pulley.
400
Friction can depend on the surface texture of an object or the area something is being moved on. There are ________ different types of surface textures and they are called ...
What is three different types: slippery, smooth, and rough.
400
The wheel of this simple machine is attached to the ceiling (or another object that does not move).
What is a fixed pulley.
400
A type of pulley that is attached to the load (the object you are trying to lift).
What is a movable pulley.
400
This type of pulley has no disadvantages.
What is a combined pulley.
400
This kind of compound machine makes it possible for farmers to do a lot of work in much less time.
What is a tractor.
500
Two things that affect the amount of force needed to make an object move are ________ and ________. Bonus points for giving an example of each!
What is slope and load.
500
In this type of lever, the effort force is applied to the middle of the object.
What is a third-class lever.
500
There are two wheels attached to this simple machine. One to the load and one to an immovable object.
What is a combined pulley.
500
These are two ways simple machines make work easier.
What is to use less force or to change the direction of the force needed.
500
There are three simple machines used in this kind of drill. They are ...