sound wave form 2

4. The amplitude of a sound wave determines its: A. Loudness B. Pitch

2. Sound waves travel fastest in: A. Solids B. Gases

12. Sound energy is a type of: A. Mechanical wave B. Electromagnetic wave

1. Sound is produced when objects: A. Vibrate B. Stop moving

10. The height of a wave on an oscilloscope represents: A. Amplitude B. Frequency

9. Echo is caused by: A. Reflection of sound B. Refraction of sound

5. The frequency of a sound wave determines its: A. Pitch B. Loudness

6. Humans can normally hear sounds between: A. 20 Hz – 20,000 Hz B. 200 Hz – 200,000 Hz

11. Sound can be reflected by: A. A hard surface B. A soft surface

7. Which part of the ear detects sound vibrations? A. Cochlea B. Eardrum

3. The unit for frequency is: A. Hertz (Hz) B. Newton (N)

8. Sound cannot travel through: A. A vacuum B. Water