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Vocabulary
Simple Machines
Experiments and Labs
Motion
Energy
100
How well an object or machine works based on how much effort and work that is achieved is a machine's ____________.
What is efficiency?
100
Effort, load, and fulcrum
What is a lever?
100
When you give up something in order to gain a mechanical advantage.
What is trade-off?
100
The force that pulls objects to the center of the Earth is ...
What is gravity
100
Energy that is created from the sun.
What is solar energy?
200
A grooved wheel with a rope.
What is a pulley?
200
An incline plane that has a __________ ramp would require a greater force in order to move objects up that ramp.
What is longer?
200
The force that slows or stops objects that results from 2 objects rubbing together.
What is friction
200
Energy cannot be created or destroyed, it only changes form is an example of the _____________
What is Law of Conservation of Energy?
300
two or more simple machines.
What is a compound machine?
300
Two inclined planes that are back to back.
What is wedge.
300
The greatest mechanical advantage using a lever can be achieved when you place the fulcrum ________ to the load.
What is closest?
300
If a car stops quickly and you are pushed forward you are experiencing ___________ because your body is still moving at the speed of the car.
What is inertia?
300
Energy that is in motion.
What is kinetic energy?
400
Mass and Weight are the same thing.
What is False?
400
The trade off using all simple machines is...
What is You use less force, but apply the force across a greater distance?
400
If you were swinging a round, solid concrete ball in order to knock down a brick wall and it would not break. You could change the concrete ball's ________ in order to make it work better.
What is mass, or shape, or distance the ball was swung from
400
Every action has an equal and opposite reaction is an example of Newton's _____
What is 3rd law of motion?
500
Mr. Kuhn lifts 300 pounds 6 feet into the air. Mr. C lift 200 pounds 4 feet into the air. Who is doing more work? Why?
What is Mr. Kuhn?
500
Two or more simple and compound machines make up a _________.
What is complex machine?
500
Two gears of different sizes will have different rates of __________.
What is rotation?
500
Why is it harder to stop a large bus than a motorcycle that are both traveling at 50 mph?
What is the large bus has a greater mass and therefore creates a greater momentum?
500
A force is a __________ or a _____________.
What is a push or a pull?