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WorksheetsEnergy/Motion/ Simple Machines Chapter 8 review
Total questions: 20
Worksheet time: 10mins
Motion is
a change in position
a push or a pull
doing work
Work is measured by how much force it takes to move an object and how far the object was moved
True
False
A student carrying a heavy box is doing __________ work than a student carrying a lighter box
less
more
the same amount of
Friction is beneficial because it
helps you float through the air like an astronaut
pulls your car wheels toward the Earth's center
keeps a basketball player from slipping and sliding on the court
drives a tractor
A bar that turns on a point is a
wedge
lever
inclined plane
wheel and axle
Work is done when something is moved over a distance
True
False
The axle in a wheel and axle turns with greater force than the wheel does. The axle also moves ________
a greater distance
the same distance
less distance
When the wheel of a wheel and axle turns one time, the wheel
travels a shorter distance
travels a greater distance than the axle does
does not move
A simple machine used to move a school's flag up the flagpole is an example of a _________
pulley
inclined plane
screw
A simple machine made of a wheel with a groove that holds a rope is __________
an inclined plane
a wedge
a pulley
A simple machine that is a wheel with a rod running through it is a ___________
an inclined plane
a wheel and axle
a screw
A simple machine that is made up of one or more inclined planes and is used to force materials apart is a __________
wedge
pulley
wheel and axle
An inclined plane reduces the amount of _________ needed to move an object against gravity to a higher position.
load
gravity
effort
A flat, slanted surface, such as a ramp or a playground slide is a ________
pulley
inclined plane
wheel and axle
An inclined plane wrapped around a cylinder is a ______
puley
screw
wheel and axle
When a cat is riding a skateboard, the cat is the load
True
False
Simple machines help people because they make work easier
True
False
What are the two forces that we use everyday?
effort and load
pencil and paper
gravity and friction
The definition of energy is
the ability to do work
when work is done
moving something over a distance
When using a lever, the more distance there is between the effort and the _____________, the less effort is required to move the load.
fulcrum
ground
load
