1 When an object is at rest or not moving, the energy it possess is ____.
A. chemical energy
B. kinetic energy
C. Potential energy
D. Thermal energy
2. A rolling ball possesses____.
A. Chemical energy
B kinetic energy
C potential energy
D Thermal energy
3 Chemical energy is important because____.
A. Because it can make our work easier.
B. Because it can make our life complicated.
C. Because it can sustain life.
D. all of the above.
4 The following are uses of mechanical energy except ___.
A. it can make our work easier.
B. it generates electricity.
C.it is use to locate exact location.
D. it make our work faster.
5. Which of the following is a source of chemical energy?
A. Pencil
B. Chalk
C. Bicycle
D. Firewood
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