1. What is the physical stimulus of the sound?

a. vibrations in space

b. vibrations in electromagnetic radiation

c. vibration in air molecules

d. potential energy in air molecules

2. What is wavelength related to psychologically?

a. pitch

b. condensation

c. loudness

d. rarefraction

3. Why do different instruments sound different when playing the same tones?

a. Because they have different amplitudes altogether

b. Because they have different psychological properties

c. Because they have different sine waves

d. Because they have different power in different frequencies

4. Most sounds that you encounter in daily life are pure tones.

a. True

b. False

5. We perceive loudness the same across the entire pitch spectrum.

a. Yes, loudness is the same across the spectrum

b. No, the lower frequencies are perceived as louder

c. There is no way to know

d. No, the speech range is perceived as louder

6. How did your ear amplify the sound?

a. all response choices are correct

b. with the tympanic membrane

c. through the ossicles in the middle ear

d. through the size of the oval window with respect to tympanic membrane

7. How does the cochlea code for pitch?

a. Based on the stimulation of the ear drum

b. all response choices are correct

c. Based on the number of times the cochlea is stimulated

d. Based on the place on the cochlea that is maximally stimulated

8. What is the receptor cell for hearing called?

a. hair cells

b. ossicles

c. tympanic membrane

d. cochlea

9. What is the stimulus in the inner ear that is detected by sound receptors?

a. amplitude

b. wavelength

c. envelope

d. harmonic

10. How can you tell where the sound source was coming from?

a. all response choices are correct

b. the doppler effect

c. the difference in amplitude between the two ears

d. difference in timing between the soundwave that hits each ear

11. Speech perception involves perceiving phonemes and morphemes. However, different morphemes can be perceived as the same phonemes and vice versa.

a. True

b. False

12. What makes speech perception complicated?

a. all response choices are correct

b. speech perception is influenced by the movement of the mouth

c. different sounds mean the same things

d. the same sound can be perceived differently