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Force & Motion 2
Test Description: Unit test review.
Instructions: Answer all questions to get your test result.
1) In any gear system, which gear turns the fastest?
A
none of the above
B
they all turn the same
C
the smallest
D
the biggest
2) Do gears that are the same size turn at the same rate?
A
maybe
B
I don\'t know
C
yes
D
no
3) If you push on a heavy item but it does not move, how much work has been done?
A
too much work
B
a little work
C
a lot of work
D
no work
4) A small force applied over a long distance is an example of....
A
friction
B
invention
C
effort
D
tradeoff
5) The only simple machine that does not move is the.....
A
wheel & axle
B
screw
C
lever
D
inclined plane
6) When a wedge is pushed down between objects, the objects...
A
press together
B
also move down
C
do not move
D
move apart
7) If you sprinkle a lubricant on an inclined plane, will moving the load take more force or less force?
A
more force
B
it won\'t make a difference
C
I don\'t know
D
less force
8) How do simple machines make work easier?
A
by reducing the amount of force needed to move a load
B
by doing all the work for us
C
they don't
D
by reducing friction
9) Do gears that are touching move in the same direction or in opposite directions?
A
the same direction
B
opposite directions
C
they don\'t move
D
they don\'t touch
10) What three things are needed for work to be done?
A
object, force, motion
B
water, soap, towel
C
pulley, wedge, lever
D
pencil, paper, dictionary
*select an answer for all questions
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