Packet 12: Bonus 13
These objects drive the L/T transition in brown dwarfs, since they sink below the photosphere at temperatures below 1700 Kelvin. For 10 points each:
[10m] Name these objects whose formation in supersaturated environments is described by Köhler (“KOOL-er”) theory. On Earth, silver iodide can be used to “seed” these objects.
ANSWER: clouds [accept cloud seeding]
[10e] Köhler theory predicts that clouds form when the relative form of this quantity is greater than 100 percent. This quantity is the concentration of water vapor in air.
ANSWER: humidity [accept relative humidity]
[10h] When air is supersaturated, clouds can form via the heterogeneous form of this process, in which water vapor condenses onto CCNs like salt crystals and aerosols.
ANSWER: nucleation [accept heterogeneous nucleation]
<Editors, Other Science> | Packet L
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 104 | 16.63 | 95% | 61% | 11% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Chicago A | Indiana A | 10 | 10 | 10 | 30 | MEH |
| Illinois Blue | WashU Grizzlers | 10 | 10 | 0 | 20 | ME |
| Illinois Canada | Illinois Urbana | 0 | 10 | 0 | 10 | E |
| Iowa A | Illinois Champaign | 0 | 10 | 0 | 10 | E |
| Purdue A | Purdue B | 10 | 10 | 10 | 30 | MEH |
| Purdue C | WashU Grolars | 0 | 10 | 10 | 20 | EH |
| Rose-Hulman A | Illinois Orange | 10 | 10 | 0 | 20 | ME |
| William Woods University A | Chicago B | 10 | 10 | 10 | 30 | MEH |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 18.00 | 100% | 60% | 20% |
| UK (South) | UK | Y | 8 | 16.25 | 100% | 50% | 13% |
| Southern California | US | Y | 7 | 17.14 | 100% | 71% | 0% |
| Eastern Canada (2) | US | Y | 9 | 14.44 | 89% | 56% | 0% |
| Great Lakes | US | Y | 11 | 17.27 | 91% | 64% | 18% |
| Lower Mid-Atlantic | US | Y | 6 | 15.00 | 83% | 67% | 0% |
| Upper Mid-Atlantic | US | Y | 12 | 16.67 | 100% | 58% | 8% |
| Midwest | US | Y | 8 | 21.25 | 100% | 63% | 50% |
| Northeast | US | Y | 12 | 17.50 | 92% | 67% | 17% |
| Pacific | US | Y | 9 | 11.11 | 100% | 11% | 0% |
| Southeast | US | Y | 12 | 17.50 | 100% | 75% | 0% |
| Upstate NY | US | Y | 5 | 18.00 | 80% | 100% | 0% |