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8th Grade First Semester Exam Review Part 3
Test Description: A review of concepts from first semester to help prepare for exam.
Instructions: Answer all questions to get your test result.
1) Which of these is an example of deceleration?
A
a bird taking off for flight
B
a car approaching a red light
C
a roller coaster moving down a steep hill
D
an airplane following a straight flight path
2) When you rub your hands together on a cold day, you use friction to convert
A
thermal energy into nuclear energy.
B
nuclear energy into electrical energy.
C
mechanical energy into thermal energy.
D
electrical energy into electromagnetic energy.
3) To determine the acceleration rate of an object, you must calculate the change in speed during each unit of
A
motion.
B
velocity.
C
deceleration.
D
time.
4) The law of conservation of energy states that when one form of energy is converted into another,
A
no energy is destroyed in the process.
B
energy is created in the process.
C
energy is destroyed in the process.
D
some amount of energy cannot be accounted for.
5) The tendency of an object to resist change in its motion is known as
A
mass.
B
inertia.
C
force.
D
balance.
6) The force that pulls falling objects toward Earth is called
A
free fall.
B
gravity.
C
acceleration.
D
air resistance.
7) Average speed is
A
the total distance traveled divided by the total time.
B
the rate at which an object is moving at a given instant.
C
equivalent to velocity.
D
the rate at which a slope changes.
8) The rate at which velocity changes is called
A
direction.
B
the rate at which velocity changes.
C
acceleration.
D
motion.
9) A place or object used for comparison to determine if something is in motion is called
A
a position.
B
velocity.
C
a reference point.
D
a constant.
10) The overall force on an object after all the forces are added together is
A
net force.
B
inertia.
C
unbalanced force.
D
gravity.
*select an answer for all questions
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