Create a custom practice set
Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.
Generate QuizGamma-ray bursts (GRBs) are classified into short and long duration based on which threshold?
- 1 second
- 2 seconds
- 10 seconds
- 60 seconds
Answer: 2 seconds
Short GRBs (<2 s) originate from compact object mergers; long GRBs (>2 s) from collapsars/massive star deaths, differing in progenitors and host galaxies.