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Work Test Review
Test Description: Review for the Work Test
Instructions: Answer all questions to get your test result.
1) Which of the following is done when a force causes an object to move?
A
friction
B
work
C
power
D
pressure
2) A box slides along a smooth surface more easily than a rough surface because there is
A
no friction between the box and the rough surface
B
less friction between the box and the rough surface
C
more friction between the box and the smooth surface
D
less friction between the box and the smooth surface
3) A wilted plant is given water and it becomes tall and strong because of
A
density
B
osmosis
C
turgor pressure
D
buoyancy
4) You gently roll a ball across the gym floor. What force will eventually make it come to a stop?
A
gravity
B
the ball will not stop rolling
C
friction
D
the force of push will run out
5) The goal of a simple machine is usually to reduce the amount of
A
distance an object travels
B
work exerted on an object
C
force needed to move an object
D
friction working against an object
6) What effect can a simple machine have when used to move an object?
A
A simple machine reduces the amount of energy required to move an object by increasing the work on the object.
B
A simple machine reduces the amount of work required to move an object by increasing the force on the object.
C
A simple machine reduces the amount of force required to move an object by increasing the distance the object moves.
D
A simple machine reduces the amount of power required to move an object by increasing the distance the object moves.
7) The advantage of using an inclined plane is to reduce the
A
amount of friction affecting the objects
B
force needed to lift the heavy objects
C
time needed to load many objects
D
work being done while moving objects
8) What is a disadvantage of using an inclined plane to left a heavy object?
A
heavy objects usually take up more space
B
many objects are difficult to lift straight up
C
the object must be moved a greater distance
D
it takes less effort to move the object
9) Which of the following decreases when an object is moved using an inclined plane?
A
the distance the object moves
B
the pull of gravity on the object
C
the force needed to move the object
D
the amount of space the object takes up
10) An inclined plane reduces the amount of force needed to move an object by
A
increasing the distance the object moves
B
transferring more of the force to the object
C
decreasing the pull of gravity on the object
D
reversing the direction the object is moved
11) How could students find out whether a short ramp or a long ramp would require less force to use? They could measure the amount of force it takes to move...
A
an object up two ramps with the same length, but different heights
B
an object up two ramps with equal heights and equal lengths
C
one object up a ramp and a larger object up the same ramp
D
an object up two ramps with the same height, but different lengths
12) 50 Newtons of force was used to move a box a distance of 12 meters. How much work was done on the box?
A
1800 Joules
B
1200 Joules
C
100 Joules
D
600 Joules
13) If an object does not move when a force is applied to it, then...
A
the forces are unbalanced
B
there is no work done
C
there is too much turgor pressure
D
there is a net force
14) A book is sitting on a table. Which of the following actions would add to its potential energy?
A
slide it across the table
B
open it to the middle page
C
dropping it to the floor
D
lifting it to a higher shelf
15) When would a skateboarder have the most potential energy?
A
while moving up the ramp
B
while rolling down the ramp
C
at the top of the ramp
D
at the bottom of the ramp
16) As a ball rolls from the top of a hill to the bottom, how does its potential and kinetic energy change?
A
potential and kinetic energy both decrease
B
potential decreases and kinetic increases
C
potential increases and kinetic decreases
D
potential and kinetic energy both increase
17) Which of these best shows a change from potential to kinetic energy?
A
electricity making a bulb light up
B
a rubber band being stretched
C
a rock sitting on top of a mountain
D
water flowing over a tall cliff
18) Potential energy and kinetic energy are similar in that both...
A
will produce an increase in the mass of an object
B
are demonstrated when an object is at rest
C
can be converted into the other form
D
depend on the height of an object above the ground
*select an answer for all questions
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