1. You can squirt water a considerably greater distance by placing your thumb over the end of a garden hose and then releasing, than by leaving it completely uncovered. Explain how this works. A. When you temporarily block the flow of water, high pressure builds up which then results in an increased velocity. B. High pressure means low velocity; this method simply does not work. C. By blocking the flow of water one creates a low pressure area that makes the water move toward the high pressure atmosphere faster. D. No answer text provided. 2. It is dangerous to stand close to railroad tracks when a rapidly moving commuter train passes. Explain why atmospheric pressure would push you toward the moving train. A. The high speed train creates a region of low pressure, since atmospheric pressure is relatively high, one feels a force towards the low pressure region. B. The would not happen, the wind from the high speed train would actually blow you AWAY from the train. C. The high speed creates a region of high pressure, one naturally moves toward higher pressure. D. No answer text provided