
Mechanical Advantage and Simple Machines
Authored by Lisa Thompson
Science
9th Grade
NGSS covered

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Elevators lift loads by employing a motor and a complex system of pulleys. If the elevator converts all the energy used to work (no heat or friction is generated), how many Joules would be required to lift a 2,500 N load 15 m? This is about five floors in a typical building.
1637 J
3827 J
37500 J
167 J
Tags
NGSS.MS-PS3-4
NGSS.MS-PS3-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A seesaw is an example of a
wedge
lever
inclined plane
pulley
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Stairs
wedge
pulley
inclined plane
wheel and axle
Tags
NGSS.MS-PS2-1
NGSS.MS-PS2-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This device
wedge
lever
incline plane
wheel and axle
Tags
NGSS.MS-PS2-1
NGSS.MS-PS2-2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is resistance (output) force?
the force required by a machine in order to accomplish work (the force you put on the machine)
the force which an effort force must overcome in order to do work on an object via a simple machine.
the force the machine exerts on a object
the output work times the input distance
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A simple machine makes work easier by doing which of the following?
Increasing the distance through which force is applied.
Changing the direction of applied force.
Multiplying the force of the energy applied.
All of the above.
Tags
NGSS.MS-ETS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Compound machines consist of two or more simple machines combined together to make work easier and increase the mechanical advantage. What two simple machines are used in a wheelbarrow?
Wheel/ axle and a lever
Lever and a wedge
Wheel/ axle and a screw
Inclined plane and a lever
Answer explanation
Tags
NGSS.MS-PS2-1
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