Round 9: Tossup 6
The differential cross section of a process named for this scientist equals the cosecant of theta over two all to the fourth power. That scattering process named for this scientist occurs when charged particles are deflected due to a Coulombic interaction. Hans Geiger and Ernest Marsden performed an experiment formulated by this scientist which utilized a (*) screen coated with zinc sulfide. The term “gamma ray” was coined by this scientist, who disproved the Plum Pudding model in an experiment which measured the scattering patterns of alpha particles. For 10 points, name this scientist who conducted the gold foil experiment. ■END■
ANSWER: Ernest Rutherford [accept Rutherford scattering or Rutherford’s gold foil experiment]
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 09
= Average correct buzzpoint
Buzzes
| Player | Team | Opponent | Buzzpoint | Value |
|---|---|---|---|---|
| Mia Clark-Webb | Oxford | Birmingham A | 25 | 15 |
| Brandon Koh | Southperial | Warperial | 52 | 15 |
| Brian Chau | Cambridge | Bath | 71 | 10 |
| Harvey Wagstaff | Birmingham B | Southampton | 85 | 10 |
Summary
| Tournament | Edition | Match | Heard | Conv. % | Power % | Neg % | Avg. Buzz |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 6 | 100% | 50% | 33% | 59.17 |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 100% | 0% | 0% | 64.00 |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 75% | 50% | 25% | 62.33 |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 100% | 20% | 20% | 81.20 |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 100% | 0% | 67% | 84.33 |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 100% | 50% | 0% | 58.25 |
| VAULT II at Harvard | 2026-04-30 | ✓ | 2 | 100% | 50% | 0% | 52.50 |
| VAULT II at MINT | 2026-06-19 | ✓ | 5 | 100% | 60% | 0% | 58.40 |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 8 | 100% | 13% | 25% | 65.00 |