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25 questions
Which is not a simple machine?
pulley
spring
screw
wedge
Which statement best describes when work is done?
A force is applied to an object
A weight lifter is able to hold a dumbbell in place.
An object moves in the direction the force is applied
An object moves
What type of simple machine is found on the lid of a pickle jar or on the top of a bottle?
screw
lever
wheel and axle
inclined plane
What is the fixed point upon which a lever rotates?
fulton
fulcrum
furmen
falcon
What type of simple machine is a ramp?
wedge
inclined plane
screw
pulley
Which of these is an example of a wedge?
stairs
broom
butter knife
skateboard
An inclined plane wrapped around a cylinder is a _______.
wheel & axle
level
wedge
screw
Which of these is not an example of an inclined plane?
ladder
stairs
wall
playground slide
Which is an example of someone using a simple machine to do work?
a boy runs across a football field
a banker counts money
a mother pushes a stroller up a ramp into a building
a girl eats a sandwich
Jan is using a screwdriver to insert a screw. The screwdriver is being used as a _______.
a wheel and axle
a lever
a wedge
a pulley
Most simple machines require a motor or electricity.
True
False
Which type of simple machine would be found on the bottom or underside of a wagon.
a lever
a pulley
a wedge
a wheel and axle
A triangular shaped inclined plane that moves through an object is a _______.
ramp
screw
wedge
lever
What simple machine is the picture?
wedge
lever
pulley
wheel and axle
What simple machine is the picture?
wedge
incline plane
screw
pulley
What simple machine is the picture?
pulley
incline plane
lever
screw
A complex machine is _____.
connected to a center post called an axle
a machine that is a combination of two or more simple machines
made of two inclined planes joined together to make a sharp edge
a slanted surface used to move things from a low place to a high place
Can a machine be 100% efficient?
Yes
No
The amount of work needed does not change regardless the amount of power a machine has.
True
False
Which is Not an example of how machines make work easier?
A machine can change the direction a force is applied
A machine can decrease the amount of work need to complete a job.
A machine can change the distance the effort force must be applied
A machine can change the amount of effort force needing to be applied
A wheel barrow is an example of a ______ lever.
first class
2nd class
3rd class
Lifting a dumbbell is an example of a _________ lever.
1st class
2nd class
3rd class
Which image below is not an example of a 1st class lever?
Power is measured in _____.
Watts
Newtons
Joules
Work is measured in _______.
Watts
Newtons
Joules
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