1. Which statement accurately describes the relationship between a sound wave's wavelength and its perceived pitch?
- A. A longer wavelength corresponds to a higher pitch.
- B. A shorter wavelength corresponds to a lower pitch.
- C. A longer wavelength corresponds to a lower pitch.
- D. Wavelength and pitch are independent properties of a sound wave.
2. A piccolo is a small flute that produces very high-pitched notes. Based on this, what can you infer about the sound waves it creates?
- A. They have a very large amplitude.
- B. They have a very short wavelength.
- C. They have a very long wavelength.
- D. They travel more slowly than low-pitched sounds.
3. A tuba produces very deep, low-pitched sounds. If you could visualize the sound waves from a tuba, what characteristic would be most prominent?
- A. The distance between consecutive wave peaks would be very long.
- B. The wave peaks would be squeezed very close to each other.
- C. The height of the waves would be small, regardless of volume.
- D. The waves would travel significantly faster than high-pitched waves.
4. When a guitarist tightens a string, the note it produces gets higher in pitch. What corresponding change occurs in the wavelength of the sound wave being produced?
- A. The wavelength increases.
- B. The wavelength decreases.
- C. The wavelength stays the same, but the amplitude increases.
- D. The wavelength becomes less stable and fluctuates.
5. Why does a sound wave with a short wavelength result in a high pitch?
- A. The waves are taller and carry more energy, which the brain interprets as high pitch.
- B. The waves are spread out and arrive at the ear less often, making them seem higher.
- C. The waves are compressed and strike the eardrum more frequently in a given time.
- D. The waves travel through the air much more quickly than long waves do.
6. Which of the following best describes how a complex acoustic pattern, such as an animal's unique call, is formed?
- A. By maintaining a single, unchanging frequency and amplitude.
- B. By changing the pitch and volume of the sound over time.
- C. By emitting a sound at the highest possible volume.
- D. By repeating the exact same simple sound multiple times in a row.
7. A marine biologist records a series of dolphin whistles and notes that one specific, complex sequence of pitches is always produced by the same individual dolphin. This unique sequence is an example of what?
- A. A simple echo
- B. An acoustic signature
- C. A constant volume sound
- D. A random noise pattern
8. The concept of an "acoustic fingerprint" is used to describe an animal's signature call. This analogy is effective because the call is...
- A. shared by all members of a family.
- B. unique to a specific individual.
- C. only used once in an animal's lifetime.
- D. impossible for humans to record or analyze.
9. A sound that has a constant pitch and constant volume over its duration would be described as:
- A. a signature whistle.
- B. a simple sound.
- C. a complex communication signal.
- D. a sound with high frequency modulation.
10. What two properties of a sound must be varied over time to create a unique acoustic "name" or signature?
- A. Speed and direction
- B. Pitch and volume
- C. Echo and repetition
- D. Duration and medium