

Understanding Simple Machines and Efficiency
Interactive Video
•
Physics, Science, Mathematics
•
6th - 8th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a type of simple machine?
Hydraulic press
Pulley
Lever
Inclined plane
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary reason for using simple machines?
To increase the amount of work done
To change the color of objects
To make objects heavier
To reduce the force needed or distance moved
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the inclined plane example, what remains constant despite changes in force and distance?
The weight of the object
The speed of the object
The height of the object
The amount of work done
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is mechanical advantage calculated?
Input force divided by output force
Output force divided by input force
Input work divided by output work
Output work divided by input work
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a mechanical advantage greater than 1 indicate?
The machine is broken
The machine is beneficial
The machine is not useful
The machine is inefficient
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for the force applied by a machine?
Output force
Effort
Load
Input force
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between input work and output work in terms of efficiency?
Input work is always greater than output work
Input work is always equal to output work
Input work is always less than output work
Input work is unrelated to output work
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