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McGraw Hill Ch2L1 Review
Test Description: Forces/Gravity/Friction
Instructions: Answer all questions to get your test result.
1) A quantity that has both size and direction
A
vector
B
quantitative
C
scalar
D
qualitative
2) All forces have ______.
A
size and direction
B
size and speed
C
magnitude and height
D
length and width
3) Forces are measured in ______.
A
centimeters
B
kilograms
C
meters
D
newtons
4) Gravity is a _____ force
A
contact
B
noncontact
C
intermittant
D
reversible
5) Friction is a _____ force
A
reversible
B
contact
C
intermittant
D
noncontact
6) The strength of gravity is determined by mass and _____.
A
distance
B
sound
C
strength
D
direction
7) Two objects that are further apart have ______ gravity than two objects that are closer together.
A
less
B
more
C
a fraction of
D
the same
8) One object has a mass of 22 grams and another has a mass of 33 grams. Which object will have a greater gravitational force?
A
the gravitational force would be equal
B
can not be determined
C
object with a mass of 33 grams
D
object with a mass of 22 grams
9) A force can change the speed, direction, or _____ of an object.
A
gravity
B
friction
C
strength
D
shape
10) Friction produces _____.
A
heat
B
gravity
C
waves
D
air resistance
11) Friction due to moving air
A
sliding friction
B
static friction
C
air resistance friction
D
rolling friction
12) An object with a ______ texture will usually have less friction than an object with a _____ texture.
A
rough, static
B
rough, smooth
C
smooth, rough
D
sleek, bumpy
13) Friction opposes:
A
heat
B
gravity
C
sound
D
motion
14) Why do some people rub the bottom of new dress shoes with sandpaper?
A
to smooth out the bottom of the shoes, to reduce friction
B
to smooth out the bottom of the shoes, to increase friction
C
to create a rougher surface to reduce friction
D
to create a rougher surface to increase friction
15) If there is too much friction
A
you would be weightless
B
you wouldn't be able to stop
C
you would have a difficult time moving
D
you would fall
*select an answer for all questions
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