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100
The number of simple machines there are.
What is 6?
100
They help do work by by changing the direction and amount of force.
What are simple machines?
100
The simple machines that make up a pair of scissors.
What are 2 class 1 levers sharing the same fulcrum?
100
The mechanical advantage of an inclined plane that has the length of 20 inches and the height of 5 inches.
What is a mechanical advantage of 4?
200
The 3 main parts to a lever.
What is effort force, resistance force, and fulcrum?
200
Ability for machines to multiply force.
What is mechanical advantage?
200
Combinations of 2 or more simple machines.
What are compound machines?
200
The work done by a machine compared to the work put into the machine.
What is efficiency?
300
A spiraled inclined plane.
What is a screw?
300
WR / AR
What is the formula for the mechanical advantage of a wheel and axle?
300
The parts of your body that make up the effort force.
What are your muscles?
300
The simple machines combined to make an axe.
What is a lever and 2 inclined planes (a wedge)?
400
FULCRUM ---- EF ---- RF
What is a class 3 lever?
400
The reason theoretical MA is less than actual MA.
What are outside forces like friction, gravity, or wind resistance?
400
The two tasks that we pointed out in class that would be more difficult without compound machines.
What are digging a hole and splitting wood. ( also telling time)
400
Applied to a machine in order to change its strength.
What is effort force?
500
The kind of machine a wheel and axel is.
What is a modified lever?
500
The unit that work input and work output is measured in.
What are Joules?
500
A fly rod is a combination of these two machines.
What is a lever (actual rod) and wheel and axel (reel)
500
The number of threads per centimeter of a spiraled inclined plane.
What is pitch?
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