Multiple Choice: Choose the letter of the best answer. Encircle your answer.

__1. The ability to do work is called
D. movement
A. motion
B. pitch
C. energy

__2. Which of the following is NOT true about energy?
A. Energy makes life convenient and comfortable
B. Life is not possible on Earth without energy from the sun
C. The only source of energy on Earth is the sun
D. Energy makes work easier and faster

__3. What is vibration?
A. how loud a sound is
C. the loudness of softness of a sound
B. how high or low a sound is
D. the back and forth movement of matter

__4. What form of energy is used in sonar for military purposes to detect and determine the location, size and
relative motion of underwater objects?
A. heat energy
B. sound energy
C. electrical energy
D. chemical energy

__5. Which of the following objects make use of sound energy?
A. fluorescent lamp
B. electric stove
C. television
D. windmills​