Sound, Light, and the Brain — Questions and answers
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What simple question was Hermann von Helmholtz most curious about?
Choices
- A. How to build a faster boat?
- B. How the outside world gets inside our heads? ✓
- C. Why the sky is blue?
- D. How many stars are in the sky?
Answer: B. How the outside world gets inside our heads?
From page 4
What did Helmholtz use in his famous experiment to show that sound was a physical vibration?
Choices
- A. A loud drum
- B. A musical instrument
- C. Tuning forks ✓
- D. A bell
Answer: C. Tuning forks
From page 6
Why did Sage realize they saw the lightning instantly but heard the thunder later?
Choices
- A. Because the lightning was closer than the thunder.
- B. Because light is much faster than sound, which is a vibration that travels. ✓
- C. Because their eyes are better than their ears.
- D. Because the sound was playing a trick on them.
Answer: B. Because light is much faster than sound, which is a vibration that travels.
From page 8