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