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Science 6 Chapter 7 Test Set B
Test Description: Energy
Instructions: Answer all questions to get your test result.
1) When a large truck and small car are moving at the same speed, the truck has greater kinetic energy because of its
A
mass
B
speed
C
velocity
D
distance
2) If the velocity of an object is doubled, the kinetic energy is multiplied by
A
1
B
1.5
C
2
D
4
3) To maintain your body temperature, your body turns chemical potential energy into
A
kinetic energy
B
electromagnetic energy
C
thermal energy
D
nuclear energy
4) As water runs over a waterfall, the potential energy turns into
A
nuclear energy
B
electric energy
C
thermal energy
D
kinetic energy
5) What is the law that states energy cannot be created nor destroyed?
A
The law of conservation of mass
B
The law of conservation of energy
C
The law of conservation of momentum
D
The law of universal gravitation
6) When work is done on an object, the object gains energy.
A
False. Change energy to momentum.
B
False. Change energy to speed.
C
False. Change energy to temperature.
D
True
7) The kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf.
A
False. Change kinetic to electromagnetic.
B
False. Change kinetic to potential.
C
True
D
False. Change kinetic to thermal.
8) A compressed spring has elastic potential energy.
A
True.
B
False. Change elastic potential to thermal.
C
False. Change elastic potential to kinetic.
D
False. Change elastic potential to gravitational potential.
9) In a machine, work output is less than work input because some energy is converted into thermal energy.
A
True.
B
False. Change thermal to mechanical.
C
False. Change thermal to potential.
D
False. Change thermal to kinetic.
10) A nuclear reaction in which the nuclei of atoms join together is called nuclear fission.
A
True.
B
False. Change fission to fusion.
C
False. Change fission to energy.
D
False. Change fission to fissure.
*select an answer for all questions
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