The interview was 2.5 hours long. I was asked to prepare a 10 minute presentation on a piece of my research or coursework. They recommended focusing on one project or topic that you know well and presenting it as a clear story that highlights your approach and key insights. There was an hour long session on the follow-up questions. In the second hour, I was given a seismic reflection image and I had to calculate a few quantities based off the graph.