Show:
Inclined Planes
Levers
Pulleys
Wheel & Axle
Gears/Compound Machines
100
A doorstop is an example of a ________ (Hint: type of inclined plane)
What is wedge.
100
The name of the fixed point on a lever.
What is the fulcrum.
100
A wheel around which a _______ or chain is passed.
What is a rope.
100
The axle is also known as the _______ wheel.
What is smaller.
100
Name an example of an item with gears in it.
What is clock, bicycle, etc.
200
A __________ is an inclined plane because of the "swirl" on it (Hint: used to hold things together)
What is a screw.
200
Draw a 2nd class lever on the board.
What is fulcrum on one side, effort on the other & resistance in the middle.
200
A single fixed pulley _______ (does/does not) move.
What is does not move.
200
A wrench is an example of a wheel & axle. (True/False)
What is true.
200
Gears _________ force.
What is transfer.
300
An inclined plane _________ (reduces/increases) the effort force your have the exert.
What is reduces.
300
It does not reduce the effort force or change the direction of the force.
What is a 3rd class lever.
300
A single fixed pulley ___________ (does/does not) change the effort force. (does change the direction of the force)
What is does not.
300
A wheel and axle __________ (increase/reduce/don't change) effort force.
What is reduce.
300
A compound machine is _________________________.
What is a machine made up of 2 or more simple machines.
400
The number of times a machine multiplies effort force. (divide length by height)
What is mechanical advantage.
400
A 2nd class lever ________ the effort force, but does not change the direction of the force.
What is reduces.
400
If there are 4 lengths of rope, it reduces the effort force _______ times.
What is 4.
400
The larger the wheel....
What is less effort force, but more distance & time.
400
A can opener is an example of a compound machine. (True/False).
What is True.
500
A ramp must be _______ as long as the height for people in wheelchairs to go up it gradually and comfortably.
What is 10 times.
500
A hockey stick is an example of a _______ lever.
What is a 3rd class lever.
500
Disadvantage of cutting the effort force is you have to exert that force _____________.
What is farther or longer distance.
500
If you apply force to the smaller wheel distance and ___________ are gained. But it increases the effort force.
What is speed.
500
Name an example of a compound machine.
What is a bicycle, truck, car, etc.