The pressure of Earth's atmosphere at sea level is approximately 1000 millibars, and it decreases by a factor of 2 every 7 km as you go up in altitude.
a. If you live at an elevation of 1 km (roughtly 3300 ft), what is the atmospheric pressure?
b. What is the atmospheric pressure at the top of a mountain that is 7896 meters?
c. By approximately what percentage does atmospheric pressure decrease every kilometer?