Physical Science, New York Edition

Chapter 4: Energy

Self-Check Quiz.-Eng.

1.
As energy transformations occur within a system, the total energy of the system __________.
A)increases
B)decreases
C)is transferred out of the system
D)remains constant
2.
During energy transformations, energy is never __________.
A)released as heat
B)used to increase an object's potential energy
C)completely transformed
D)created or destroyed
3.
The total amount of potential and kinetic energy in a system is called __________.
A)thermal energy
B)complete energy
C)energy maximum
D)mechanical energy
4.
A baseball is hit into the air with a bat. When does the baseball have the greatest gravitational potential energy?
A)when it reaches its highest point
B)when it leaves the bat
C)when it hits the ground
D)when the mechanical and kinetic energies of the baseball are equal
5.
The law of conservation of energy states that __________.
A)energy can be created and destroyed but cannot change form
B)energy is not created or destroyed and its form is constant
C)energy cannot be created or destroyed
D)when energy is transformed, the total energy of a system is less than it was before the change
6.
One food Calorie is equivalent to approximately __________.
A)4 J
B)40 J
C)400 J
D)4,000 J
7.
Carbohydrates and proteins each supply about __________ Calories of energy per gram.
A)14
B)40
C)400
D)4
8.
By what process does the Sun produce enough energy to warm Earth?
A)catabolism
B)glycolysis
C)nuclear fusion
D)transformation of thermal energy into kinetic energy
9.
Which of the following is NOT a form of energy?
A)friction
B)thermal
C)electrical
D)chemical
Physical Science - New York Edition
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