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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
the biggest
B
they all turn the same
C
none of the above
D
the smallest
2) Do gears that are the same size turn at the same rate?
A
I don\'t know
B
maybe
C
no
D
yes
3) If you push on a heavy item but it does not move, how much work has been done?
A
too much work
B
no work
C
a little 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
lever
B
wheel & axle
C
screw
D
inclined plane
6) When a wedge is pushed down between objects, the objects...
A
press together
B
do not move
C
also move down
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
less force
C
I don\'t know
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
the same direction
B
they don\'t touch
C
opposite directions
D
they don\'t move
10) What three things are needed for work to be done?
A
water, soap, towel
B
pulley, wedge, lever
C
pencil, paper, dictionary
D
object, force, motion
*select an answer for all questions
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