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7th Grade- Unit 5
Test Description: Physical science part 2
Instructions: Answer all questions to get your test result.
1) First we must understand that Newton’s Laws are known as physical laws and that they form the basis for what is known as:
A
classical mechanics
B
celestial bodies
C
physics
D
kinematics
2) Any influence that causes an object to undergo a change in speed, direction, or shape is known as:
A
force
B
interaction
C
motion
D
motion
3) To be visible to the naked eye is known as
A
biologic
B
microscopic
C
macroscopic
D
philosophic
4) Newton’s scientific laws govern what percentage or more of our everyday experiences?
A
47%
B
99%
C
90%
D
55%
5) The second law states that the acceleration of an object is dependent upon two variables -
A
input force and output force
B
net force and mass
C
action and reaction
D
acceleration and deceleration
6) The Second Law of Motion introduces one of the most important fundamental concepts in science -
A
mass
B
force
C
inertia
D
gravity
7) A mutual action between objects where each object exerts an equal and opposite force on the other
A
reaction
B
interaction
C
result
D
motion
8) To every action there is always an
A
equal and opposite reaction
B
in favor and unequal reaction
C
in favor an equal reaction
D
unequal and opposite reaction
9) The first law of motion focuses on
A
equal and opposite reactions
B
inertia
C
gravity
D
mass
10) The Name of the scientist who discovered the 3 Laws of Motion is
A
Galelio
B
Thomas Edison
C
Issaic Newton
D
John Newton
11) 1 Newton (N) is equal to
A
1kg x m/s2
B
1 km/s2
C
1kg x m/s
D
1g x km/s2
12) The unit used to represent mass is
A
m/s2
B
g
C
N
D
kg
13) we use Newton (N) when we are expressing
A
mass
B
gravity
C
force
D
acceleration
14) How many Newtons of force are required to move an object that is 10 kg at 2m/s2
A
5N
B
20N
C
2N
D
0.2 N
15) What is the mass of an object that requires 6 N to move at 3m/s2.
A
2kg
B
1 kg
C
0.5 kg
D
18 kg
16) Which is Newton's 3rd law
A
An object at rest will stay at rest unless acted upon by a force
B
for every action there is an equal and opposite reaction
C
an object in motion will stay in motion in a straight path
D
an object with greater mass requires large amount of force to move
*select an answer for all questions
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