Most of us fly in the troposphere, that layer of the atmosphere closest to the earth, the one with the weather and pizza-delivery drones. It's characterized by -- among other things -- decreasing temperature with height. The standard lapse rate (pressure and temperature) in the lower atmosphere is what?
If you enjoyed taking this interactive quiz and would like to see more like it, go to the AVweb Brainteaser page. And if you thought it was unfair, confusing, or a waste of time, we'd like you to tell us that, too. And if you have an idea for a subject that you think would make a good future Brainteaser quiz, be sure to let us know.