Forces/Motion/Simple Machine Question Preview (ID: 53738)
Practice Test.
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What is a simple machine made up of two inclined planes?
a) incline plane
b) wedge
c) lever
d) simple machines
What is a device used for work that changes the force of the motion?
a) incline plane
b) wedge
c) simple machines
d) lever
What is simple machine made up of a slanted surface?
a) incline plane
b) wedge
c) simple machines
d) lever
What is a simple machine made up of a stiff bar that moves freely around a fixed point?
a) incline plane
b) wedge
c) simple machines
d) lever
The change of an object's place compared to the objects around it is _________.
a) motion
b) friction
c) shadow
d) position
Mrs. Dombroski is using a screwdriver to open a lid. What simple machine is the screwdriver acting like?
a) screw
b) lever
c) pulley
d) inclined plane
The measure of the distance an object travels in a certain amount of time is called
a) friction
b) motion
c) speed
d) gravity
An object will only move when balanced forces act upon it.
a) True
b) False
c)
d)
What causes objects to move?
a) balanced forces
b) friction
c) unbalanced forces
d) gravity
One way to INCREASE friction is to use _______
a) oil
b) sand
c) water
d) soap
Why does a book on a table not move?
a) No forces are acting on the book.
b) There are not enough forces acting on the book.
c) The force of the table pushing up and the force of gravity pulling down are balanced.
d) The air is holding the book down.
What simple machine is part of BOTH a screw and a wedge?
a) wheel and axle
b) pulley
c) lever
d) inclined plane
What forces doe a mom use to move a stroller?
a) speed
b) gravity
c) push
d) pull
What force do you use when you rake leaves?
a) push
b) pull
c) friction
d) gravity
What simple machine changes a weak circular force into a strong downward force?
a) pulley
b) screw
c) wheel and axle
d) lever
What would cause a ball to fall to the ground?
a) friction
b) gravity
c)
d)
Gravity and friction are both forces that change an object's motion.
a) True
b) False
c)
d)
Without decreasing friction, a heavy box can be easily moved across a concrete sidewalk.
a) True
b) False
c)
d)
If you are not moving, what kind of forces is happening?
a) balanced force
b) unbalanced force
c)
d)
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