1. According to the principle of energy conservation, energy can ?
A be created and destroyed
C be destroyed but not created
B. be created but not destroyed
D. neither be created nor destroyed
2. When a ball is dropped from a window, A. its kinetic energy remains the same
b its potential energy remains constant C. its potential energy decreases, while its kinetic energy increases
D. its potential energy increases, while its kinetic energy decreases
3. A speeding car has both
A. potential energy and velocity
C. potential energy and momentum
B. kinetic energy and momentum
D. kinetic energy and potential energy 4. Which of the following does NOT have kinetic energy?
A. a falling leaf
C. a rock on top of a hill
B. a boy running
D. a man playing basketball
5. Which statement best explains what energy is?
A. It is matter in motion.
C. It is a force acting through a distance B. It is the capacity to do work.
D. It is a lifting force applied to an object. 6. What refers to the energy possessed by an object because of its position?
A. potential energy
C. mechanical energy
B. kinetic energy
D. gravitational energy
7. A ball is thrown up in the air. While it moves upward, what happens to its energy?
A. loses both kinetic and potential energy
C. loses potential energy and gains kinetic energy
B. gains both kinetic and potential energy
D. gains potential energy and loses kinetic energy
8. Which energy transformation occurs in a hydroelectric power plant?
A. electrical energy to nuclear energy
C. gravitational potential energy to electrical energy
B. electrical energy to mechanical energy
D. nuclear energy to electrical energy 9. Which of the following is not a conventional source of energy?
A. biogas
C. nuclear
B. geothermal
D. fossil fuel
10.As the kinetic energy of a falling object increases, its potential energy. A. increases
C. remains the same
B. decreases
D. none of these
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Answer:
1B
2C
3D
4A
5A
6A
7D
8A
9D
10A