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Definitions
Simple Machines
Force/ Motion
Magnets
100
A push or pull that makes something move.
What is a force?
100
A Simple Machine is a tool that can make work easier.
What is a Simple Machine?
100
It will move faster.
What happens if you push a swing lightly, then harder?
100
Attract means to pull toward.
What does attract mean?
200
The act of moving.
What is motion?
200
A wedge.
Which simple machine pushes things apart?
200
A wagon filled with toys.
What needs more force to move, an empty wagon or a wagon filled with toys?
200
Repel means to push away.
What does repel mean?
300
A force that pulls things toward the center of the Earth.
What is gravity?
300
A pulley.
Which simple machine is made of a rope and a wheel and moves objects up and down?
300
Back and forth, up and down, side to side, rolling, in a straight line, etc.
What is one way an object can move?
300
Some objects made of metal.
What objects will magnets attract?
400
Work is when force moves an object.
What is work?
400
An inclined plane.
What is another name for a ramp?
400
A sidewalk will make a bike go faster because there is less friction.
Which surface will make a bike go faster, grass or a sidewalk? Why?
400
North and South.
The ______ and _______ poles will attract.
500
A force that slows down or stops moving objects.
What is friction?
500
A wheel and axle.
A bike has which simple machine?
500
Grass, a rug, etc.
Name one surface that causes friction.
500
South and South or North and North
_____ and _____ poles will repel.