Packet 10: Bonus 8
Answer the following about sound. For 10 points each:
[10e] The intensity of sound is commonly measured in these logarithmic units, named for a metric prefix and an inventor of the telephone. Long-term exposure to sounds above 85 of these units can cause hearing loss.
ANSWER: decibels [or dB]
[10h] Sound waves consist of crests of increased pressure, known as compressions, as well as troughs of decreased pressure known by this term.
ANSWER: rarefactions
[10m] Beat frequencies may occur when sound undergoes this phenomenon, in which the amplitudes of two waves are added or subtracted. Young’s double slit experiment produced a pattern named for diffraction and a pattern named for this process.
ANSWER: interference [accept constructive interference or destructive interference; accept interference patterns]
<Physics — June Yin> | SHOW-ME Four Packet 10
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 8 | 20.00 | 88% | 75% | 38% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 5 | 18.00 | 80% | 60% | 40% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 2 | 25.00 | 100% | 100% | 50% |
| SPOOKY IX | 11/20/2025 | ✓ | 1 | 20.00 | 100% | 100% | 0% |