Packet J: Bonus 3
The B2FH paper supported Fred Hoyle’s hypothesis that all elements heavier than this element were not formed through BBN. For 10 points each:
[10h] Name this element that is proposed to sink beneath a star’s atmosphere over time, thus increasing the rate of turbulent mixing. This element is the heaviest whose distribution is depicted on the Schramm plot.
ANSWER: lithium [or Li; accept lithium-7 or Li-7]
[10e] The brown type of these stars can be identified via the relative abundance of lithium. The white type of these low-mass stars forms after sun-like stars run out of fuel.
ANSWER: dwarf stars [accept brown dwarfs or white dwarfs]
[10m] A major source of lithium is the “classical” type of these phenomena, which are about 1,000 times brighter than their “recurrent” type. The “dwarf” type of these phenomena necessarily occurs [emphasize] below the Chandrasekhar limit.
ANSWER: novae [or novas; accept classical novae or recurrent novae or dwarf novae; reject “supernova” or “kilonova”]
<UW A, Other Science> | Packet-J_Indiana-A_UNC-A_UW-A
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 62 | 13.71 | 97% | 29% | 11% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Brandeis A | UMass Boston | 0 | 10 | 0 | 10 | E |
| Brandeis B | Dartmouth A | 0 | 10 | 0 | 10 | E |
| Harvard A | Brown A | 0 | 10 | 0 | 10 | E |
| Harvard B | Tufts A | 0 | 10 | 0 | 10 | E |
| MIT A | BU | 0 | 10 | 10 | 20 | EM |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| California | 2025-02-01 | ✓ | 3 | 13.33 | 100% | 0% | 33% |
| Florida | 2025-02-01 | ✓ | 3 | 3.33 | 33% | 0% | 0% |
| Great Lakes | 2025-02-01 | ✓ | 6 | 15.00 | 100% | 33% | 17% |
| Lower Mid-Atlantic | 2025-02-01 | ✓ | 6 | 15.00 | 100% | 33% | 17% |
| Midwest | 2025-02-01 | ✓ | 6 | 15.00 | 100% | 33% | 17% |
| North | 2025-02-01 | ✓ | 3 | 16.67 | 100% | 67% | 0% |
| Northeast | 2025-02-01 | ✓ | 5 | 12.00 | 100% | 20% | 0% |
| Overflow | 2025-02-01 | ✓ | 5 | 18.00 | 100% | 60% | 20% |
| South Central | 2025-02-01 | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| Southeast | 2025-02-01 | ✓ | 3 | 10.00 | 100% | 0% | 0% |
| UK | 2025-02-01 | ✓ | 10 | 12.00 | 100% | 10% | 10% |
| Upper Mid-Atlantic | 2025-02-01 | ✓ | 7 | 14.29 | 100% | 29% | 14% |
| Upstate NY | 2025-02-01 | ✓ | 3 | 13.33 | 100% | 33% | 0% |