Packet 11: Bonus 21
This man developed an alternative to the Richards equation which states a soil’s infiltration rate starts at the maximum and decays exponentially until reaching the minimum infiltration. For 10 points each:
[10h] What hydrologist also names an “overland flow” where rain that exceeds infiltration capacity will flow horizontally across land?
ANSWER: Robert E. Horton [or Horton equation or Horton overland flow]
[10e] Horton overland flow is an example of this process where excess rain or meltwater flows aboveground, leading to soil erosion.
ANSWER: surface runoff
[10m] The infiltration of water in soils can also be described with this equation, which states the volumetric flow rate through a porous medium equals negative permeability times pressure drop over dynamic viscosity.
ANSWER: Darcy’s law [reject “Darcy–Weisbach equation”]
<BC, Other Science (Earth Science)> | NAFTA-Packet-11
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 9 | 15.56 | 78% | 67% | 11% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Ana Pauker? I hardly know her! | The Umayyad Caliphate be like REPEAL NAPHTHA | 0 | 10 | 10 | 20 | EM |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| 2025 NAFTA Online | 02/14/2026 | ✓ | 2 | 15.00 | 50% | 100% | 0% |
| 2026 NAFTA at Vanderbilt | 02/14/2026 | ✓ | 1 | 20.00 | 100% | 100% | 0% |
| 2025 NAFTA at Toronto | 09/13/2025 | ✓ | 1 | 10.00 | 100% | 0% | 0% |
| 2025 NAFTA at Maryland | 09/27/2025 | ✓ | 1 | 30.00 | 100% | 100% | 100% |
| 2025 NAFTA at Chicago | 11/08/2025 | ✓ | 4 | 12.50 | 75% | 50% | 0% |