Energy, Work, and Simple Machines Chapter 3
Flashcard
•
Physics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What happens to nuclear energy during the process of fusion?
Back
Nuclear energy is released when nuclei join.
2.
FLASHCARD QUESTION
Front
What is defined as a push or pull exerted on an object?
Back
Force.
3.
FLASHCARD QUESTION
Front
In a lever system, what is the role of the fulcrum?
Back
The fulcrum is the pivot point around which the lever rotates.
4.
FLASHCARD QUESTION
Front
What is a pulley?
Back
A grooved wheel with a rope or cable wrapped around it.
5.
FLASHCARD QUESTION
Front
What is an example of a simple machine that uses distance to multiply a force?
Back
The doorknob is an example of a wheel and axle.
6.
FLASHCARD QUESTION
Front
What is the mechanical advantage of using simple machines?
Back
Simple machines allow us to apply less force over a greater distance to accomplish work.
7.
FLASHCARD QUESTION
Front
What is the relationship between work, force, and distance?
Back
Work is done when a force is applied to an object and the object moves a distance in the direction of the force.
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