Sound Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. Through which of these can sound NOT travel?
- A. Steel
- B. Water
- C. Air
- D. A vacuum
2. A person claps 51 m from a cliff and hears the echo 0.30 s later. What is the speed of sound?
- A. 340 m/s
- B. 170 m/s
- C. 17 m/s
- D. 510 m/s
3. A sound is made louder but its pitch stays the same. What has increased?
- A. Frequency
- B. Wavelength
- C. Amplitude
- D. Speed
4. Which frequency is ultrasound for a human?
- A. 15 Hz
- B. 25 kHz
- C. 500 Hz
- D. 10 kHz
5. Which part of the ear turns vibrations into electrical signals for the brain?
- A. Eardrum
- B. Ear canal
- C. Cochlea
- D. Ossicles