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