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Imagine two friends, Jake and Anna, who love diving. Jake is 10 meters below the ocean's surface, while Anna is in a submarine enjoying the deep sea.
Jake feels slight extra pressure, about twice what we feel at sea level, but his scuba gear handles it easily.
This pressure is called oceanic pressure, which is the force exerted by the weight of the water in the ocean.
Anna, however, is in a submarine because the oceanic pressure at her depth is immense, over 1,000 times what we feel on land.
Why does this happen? The deeper you go, the more water presses down on you, and its weight increases oceanic pressure.
As we go down, pressure rises by 10 kilopascals per meter. Humans need special gear to survive.
Jake’s scuba tank helps him breathe at 10 meters, while Anna’s submarine has thick walls to withstand crushing deep-sea pressure.
As Jake and Anna ascend, something important happens. Pressure decreases. That’s why Scuba divers must ascend slowly, stopping at points to let their bodies adjust.
