Definitions
Definitions Cont.
How do they help?
Examples
Fill in the blank
100
A simple machine that has a center rod attached to a wheel.
What is a wheel and axle
100
a screw
What is a simple machine that is an inclined plane wrapped around a cylinder, that holds things together?
100
What simple machine helps make work easier by changing the direction of the force?
lever, fixed pulley or wedge
100
What type of simple machine is a teeter-totter?
A lever
100
A lever helps us do work by changing the __________ of the force.
direction
200
A simple machine made out of a wheel and rope.
What is a pulley
200
effort force
What is the force that is put into a simple machine?
200
What simple machine helps make work easier by changing the amount of force put on an object?
wheel and axle or moveable pulley
200
What type of simple machine is an electric fan?
wheel and axle
200
A wheel and axle helps us do work by changing the amount of ________.
force
300
A simple machine that is a flat surface with one end higher than the other.
What is an inclined plane?
300
resulting force
What is the force that moves a load or does the work?
300
What simple machine helps make work easier by changing both the direction AND the amount of force put on the object?
inclined plane, screw, lever
300
What type of simple machine is a shovel blade?
wedge
300
A screw helps us do work by changing both the direction and ____________ of the force.
amount
400
A stiff, bar or board that is held up on a fixed point called a fulcrum.
What is a lever?
400
newton
What is the metric unit of force?
400
If you are using a lever, and you still cannot lift an object, what should you do with the fulcrum?
move the fulcrum closer to the object
400
What type of simple machine is a staircase?
inclined plane
400
Because of it's structure, a wheel barrow is considered to be a ______________.
lever
500
A simple machine with two inclined planes back to back, used to cut or split an object.
What is a wedge?
500
friction
What is the force that keeps objects that are touching from sliding past each other?
500
It changes the direction of the force
How does a fixed pulley make work easier?
500
What type of simple machine is a thermos lid?
screw
500
A tow truck lift helps us lift cars that would otherwise be too heavy. The simple machine that does the work is called a ____________.
pulley
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