Wheel and Axle
Pulleys
Lift
Levers
Screws
Wedges
Engine
100
Give 2 examples of everyday objects that use the wheel and axle.
Many correct responses including: Car, skateboard, wagons, bike, shopping cart, etc
100
Give 2 everyday examples of pulleys.
Many examples including:
water well, clothes line, bike-chain, elevators, curtains, flag pole.
100
If an airplane is in flight, the air pressure is lower above the plane. True or False
True
100
Give two examples of everyday objects that are levers.
see-saw, scissors, nail clippers, back of a hammer, hockey stick, your arms.
100
Give an example of an everyday object that is a screw (other than a normal screw).
Jar lid
lightbulb
car jack
more?
100
Give two examples of an everyday object that is a wedge.
●Knife
●Axe
●Door Stopper
●Sewing Needle
100
The amount of pressure created by a smaller piston can be the same as the pressure created by a larger piston because it exerts the same amount of pressure per square inch as the larger piston. True or False
True
200
True or False. A Wheel and axle is a shaft that is
attached to the center of a larger wheel so that they rotate separately.
•False: Wheel and axle – a shaft (axle) that is attached to the center of a larger wheel so that they rotate together
200
How does a pulley reduce work?
By reducing the effort needed to lift an object by increasing the distance over which the effort is applied.
200
As the angle of attack increases the speed of the air on the top of the wing increases or decreases?
Increases
200
How does a lever reduce work?
The lever makes doing work easier by reducing the force needed to move an object. In order to reduce the force needed, the distance over which the force is applied must be increased.
200
True or False: a screw is an inclined plane wrapped around a cylindrical post.
True!
200
How does a wedge make work easier?
A wedge reduces the amount of force needed to split objects.
200
What type of energy does regenerative braking use regenerative or heat energy?
heat
300
Why do gears have teeth?
The teeth allow gear to interlock with each other causes them to rotate one another.
300
What vocabulary word should be under the red arrow in this picture?
Effort or applied force
300
What is the force that resists the force of gravity?
Lift
300
This is the word for the point on which a lever rests or is supported and on which it pivots?
The fulcrum
300
Where is pitch on a screw?
Pitch is the distance between the threads.
300
True or False: a wedge is two inclined planes put together to make a point. Explain.
True! 
300
A machine that is made of two or more simple machines is called a
Compound Machine
400
True or False: a pulley system also utilizes a wheel and axle.
True! A pulley system uses a grooved wheel attached to an axle and a rope to rotate it.
400
True or False: Part C in this diagram is a movable pulley. Explain
False. Part C is a fixed pulley because it is fixed to one spot (it does not move).
400
What are the four things that affect lift on an airplane?
Lift is affected by the shape and area of the wing, the angle of attack and the speed of the airplane and the density of the air.
400
True or False: the further the load is from the fulcrum, the easier it is to move. Explain
False! The closer the load is to the fulcrum, the easier it is to move.
400
What is another term for the ridges on a screw?
Threads
400
How is a wedge different from an inclined plane?
A wedge is used to split things apart, an inclined plane is used to move objects from one level to another.
The big difference between a wedge and an inclined plane is that, while the inclined plane stays still, a wedge moves to do its work.
400
What stroke of an engine makes a spark which ignites the fuel? Power stroke or intake stroke
Power
500
How do wheels reduce work?
They reduce work by reducing the amount of friction used to move an object.
500
True or False: Part B in this diagram is a movable pulley. Explain
True! It is not fixed to one spot, so it is able to move.
500
Whose Principle is used to describe why flight is possible? Name the scientist
Bernoulli
500
True or False: The wheelbarrow is an example of a lever. If so, where does the effort come from, where is the load, and where is the fulcrum?
True! Your hands on the handles give the effort. The load is inside the wheelbarrow. The wheel is the fulcrum.
500
What is the main part of the screw called in which the threads wrap around?
The shaft.
500
True or False: all wedges are meant to be moved in order to do their job. Explain
False. Some wedges are used to prevent movement, such as a door wedge.
500
An internal combustion engine consists of several chambers called ...
cylinders