![]() ![]() What is the question about? Are you expecting an increase or decrease compared to the SURFACE?.So now you are going DOWN from the surface. Remember in the first three steps you calculated what would happen at the surface.Step 2b – Think about the question again. Step 1b – Take your answer from the steps above. Use the table to find the pressure at that depth.Scan the question and find the FIRST or more importantly and correctly STARTING depth (in meters.). ![]() Do you expect the answer to be less or more given you are GOING UP? That is a BIG difference to how you used the three step process before. In this step you are going UP to the surface. Find the number from the question that is in that same unit and write it down.Is the question calling for an answer in Minutes, PSI or BAR, Liters?.Look at the answers it is multiple-choice after all.I am using the British spelling this time! I will show this alternative method later in the series, but for now it is probably best to stick with the three step method you are already becoming familiar with. There is another way to do it, which I call the first depth/second depth method. We just need to do the three step process twice, with a little twist. When we are asked a question that involves moving from one depth to a second depth. Until now everything has been compared to the surface. Now we will consider questions that ask about 2 different depths. ![]()
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