Packet 3: Bonus 6
Surge tanks are typically attached to intake devices called penstocks within these structures to manage flow. For 10 points each:
[10e] Name these manmade structures that generate power by pushing fluid through a turbine. These structures collectively supply the world’s largest form of renewable power.
ANSWER: hydroelectric dams [accept hydroelectricity or hydropower or waterpower]
[10h] This type of turbine relies on a pressure differential from the head to tail, thus allowing propellers to rotate. This type of turbine is exemplified by the Francis and Kaplan turbines and is contrasted with impulse turbines.
ANSWER: reaction turbines
[10m] Reaction turbines are typically placed at lower elevations to avoid this phenomenon, which occurs when the fluid pressure drops below the vapor pressure and can generate damaging shock waves through sonoluminescence.
ANSWER: cavitation
<UCLA, Other Science> | C. Prelims 3 - Cambridge + UCLA + Stanford B + Virginia
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 21 | 14.76 | 86% | 62% | 0% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Bruin | Georgia Tech C | 0 | 0 | 10 | 10 | M |
| Chicago A | Georgia Tech A | 10 | 0 | 10 | 20 | EM |
| Columbia A | North Carolina | 10 | 0 | 10 | 20 | EM |
| Georgia Tech B | Virginia Tech | 10 | 0 | 10 | 20 | EM |
| Indiana | Columbia B | 10 | 0 | 0 | 10 | E |
| MIT | Maryland A | 10 | 0 | 10 | 20 | EM |
| NYU A | Brown | 0 | 0 | 10 | 10 | M |
| NYU B | Pittsburgh | 10 | 0 | 10 | 20 | EM |
| Northwestern A | Illinois B | 10 | 0 | 10 | 20 | EM |
| Penn State | Minnesota | 0 | 0 | 0 | 0 | |
| Stanford A | Michigan | 10 | 0 | 10 | 20 | EM |
| Swarthmore | Harvard | 10 | 0 | 0 | 10 | E |
| Texas | Georgetown | 10 | 0 | 10 | 20 | EM |
| Toronto A | Purdue | 10 | 0 | 10 | 20 | EM |
| Toronto B | Chicago B | 10 | 0 | 10 | 20 | EM |
| UC Berkeley A | British Columbia | 10 | 0 | 10 | 20 | EM |
| UC Berkeley B | Northwestern B | 10 | 0 | 0 | 10 | E |
| UCF | Rutgers | 10 | 0 | 0 | 10 | E |
| Vanderbilt | Johns Hopkins | 10 | 0 | 0 | 10 | E |
| WashU | Ohio State | 10 | 0 | 0 | 10 | E |
| Waterloo | Cornell | 10 | 0 | 0 | 10 | E |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Main Site | 2026-04-17 | ✓ | 21 | 14.76 | 86% | 62% | 0% |