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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
the biggest
C
the smallest
D
they all turn the same
2) Do gears that are the same size turn at the same rate?
A
maybe
B
no
C
I don\'t know
D
yes
3) If you push on a heavy item but it does not move, how much work has been done?
A
a lot of work
B
too much work
C
a little work
D
no work
4) A small force applied over a long distance is an example of....
A
effort
B
invention
C
friction
D
tradeoff
5) The only simple machine that does not move is the.....
A
lever
B
screw
C
inclined plane
D
wheel & axle
6) When a wedge is pushed down between objects, the objects...
A
also move down
B
move apart
C
do not move
D
press together
7) If you sprinkle a lubricant on an inclined plane, will moving the load take more force or less force?
A
more force
B
I don\'t know
C
less force
D
it won\'t make a difference
8) How do simple machines make work easier?
A
by doing all the work for us
B
they don't
C
by reducing friction
D
by reducing the amount of force needed to move a load
9) Do gears that are touching move in the same direction or in opposite directions?
A
they don\'t move
B
opposite directions
C
the same direction
D
they don\'t touch
10) What three things are needed for work to be done?
A
pencil, paper, dictionary
B
pulley, wedge, lever
C
water, soap, towel
D
object, force, motion
*select an answer for all questions
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