1.Which of the following objects will produce sound?
A. soft objects C. vibrating objects
B. radio stations D. objects under pressure

2. Which of the following is NOT capable of transmitting sound?
A. air B. ice C. seawater D. vacuum
4

3. Which describes sound wave? It is _________ wave. A. longitudinal B. shock C. standing D. transverse
For numbers 4-5: Solids, liquids and gases differ in the way the molecules that
make them up are arranged. When sound propagates, the energy it carries is
transferred from molecule to molecule.

4. Molecules of solids are closest to one another compared to liquids and
gases. How do you compare the speed of sound in solid with its speed in
liquid or gas? Sound travels in solids _____________. A. the fastest C. with varying speed
B. the slowest D. with undetermined speed

5. Molecules of gases are farthest apart. How do you compare the speed
of sound in gases with its speed in solid and liquid? Sound travels in gases
________. A. the fastest C. with varying speed
B. the slowest D. with undetermined speed

6. The speed of sound is different in air, steel, and water. Which of the
following gives the correct order of speed of sound from slowest to fastest?
A. air, steel, water C. steel, air, water
B. air, water, steel D. steel, water, air

7. Which would likely transmit sound BEST?
A. Steel in cabinet C. Air in your classroom
B. Water in the ocean D. Water in a swimming pool

8. What kind of wave is sound?
A. transverse, mechanical C. transverse, electromagnetic
B. longitudinal, mechanical D. longitudinal, electromagnetic
5

9. At an atmospheric temperature of 30
0C, what is the speed of sound
in air? A. 331 m/s B. 331.5 m/s C. 349 m/s D. 349.5 m/s

10. Which of the following produces a loud sound?
A. whisper C. flowing river water
B. hummingbird D. exploding firecrackers

11. Which of these vibrates and produces soft sound?
A. thunder C. alarm clock
B. live band D. an airplane during a take-off

12. Which BEST describes a high frequency sound? It has ____________ A. low pitch B. high pitch C. low energy D. A and C

13. Which is/are TRUE about sound?
I. Sound is a longitudinal wave. II. The speed of sound increases with temperature. III. Human ear is sensitive to sound at 20 Hz- 20, 000 Hz. IV. Sound waves travel fastest in solid and slowest in gas. A. I,II and III B. I, II, and IV C. I, III and IV D. I,II,III and
IV

14. What type of sound that has a frequency higher than 20,000 Hz?
A. infrasonic B. subsonic C. supersonic D. ultrasonic

15. What is the main factor that affects the speed of a sound wave?
A. amplitude B. intensity C. loudness D. medium