Question
Description acceptable. This action is performed three times in a "bi-elliptic" technique that can be optimal if a ratio of final to initial distance exceeds twelve. Performing this action quickly while potential energy is minimized exploits the Oberth effect. This action is performed twice, first for "raising" and then for "circularizing," in a Hohmann transfer. When performed with greater specific impulse, this action achieves greater (*) delta-v. By Newton's third law, propellant gas accelerated downward via this action produces an upward thrust force. This action is performed following the removal of each successive stage of a multistage rocket. For 10 points, name this action that powers rockets via combustion. ■END■
ANSWER: fuel burning [or rocket burning or engine burning or propellant burning; accept rocket boosting or speed boosting or impulses or burn time or impulsive burning or finite burning; accept descriptions of rocket engines firing or combusting or igniting; accept fuel combustion until read; accept thrusting or rocket thrusters before "thrust” is read; accept propelling or rocket propulsion before "propellant” is read; prompt on descriptions of accelerating or speeding up by asking "what action causes the acceleration?"; prompt on orbital maneuvers or impulsive maneuvers by asking "what action is done to maneuver the orbit?"]
<Science - Physics>
= Average correct buzz position
Buzzes
Summary
| Tournament | Edition | Exact Match? | TUH | Conv. % | Power % | Neg % | Average Buzz |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 42 | 57% | 10% | 0% | 88.38 |