If you place a piece of paper under your bottom lip and blow across the top of the page what happens?

When you blow across the top of the piece of paper placed under your bottom lip, the paper will lift and rise. This occurs because the fast-moving air creates lower pressure above the paper compared to the higher pressure underneath it, resulting in an upward force that causes the paper to move. This phenomenon is a demonstration of Bernoulli's principle, which explains how varying air speeds can affect pressure.