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WorksheetsSimple and Compound Machines
Total questions: 17
Worksheet time: 1hrs 2mins
What is the definition of work?
A job that completes a task
Energy transferred when a force makes an object move
Earning money
If you push against an object and it doesn't move, are you doing work?
No
Yes
In order for work to be done, what two things need to happen?
Object needs to move in any direction
Object needs to have acceleration and speed
Object must move and must move in the direction of the force applied
A ___________ is a device that changes the force or increases the motion from work.
Work
Job
Machine
A _________ does work with just one movement of the machine.
Compound Machine
Simple Machine
Useful Machine
A __________ is a combination of two or more simple machines
Simple Machine
Compound Machine
Efficient Machine
Which is an example of a simple machine.
Pulley
Bicycle
Knife
Which is an example of a compound machine.
Knife
Pair of Scissors
Doorknob
What is the SI unit for work?
Newtons
Joules
Grams
a couch is pushed with a horizontal force of 80 N and moves a distance of 5 m across the floor. How much work is done on the moving couch?
16 J
200 J
400 J
Ramp that can be used to raise an object.
inclined plane
lever
wedge
A bar that can turn around a fixed point.
wedge
screw
lever
Wheel attached to a shaft.
pulley
wheel and axle
lever
Form of inclined plane wrapped in a spiral around a piece of metal.
screw
lever
inclined plane
An inclined plane that moves when it is used.
wedge
screw
ramp
16.
Answer the questions below after watching the video
Explain the difference between a simple and a complex machine in your own word.
17.
Answer the questions below after watching the video
Share a compound machine you use often and share the simple machines that are used to make up the complex machine.
