1. The four forces of flight are lift, xxxx, drag, and weight.
2. The world’s smallest jet is the xxxx. Its wingspan is 14–21 feet and weighs just 358 pounds.
3. Airport control tower windows must be angled at precisely xxxx degrees from vertical at the top to decrease reflections from both inside and outside the tower.
4. What was Harriet Quimby’s (1875–1912) claim to fame?
5. Who created “The Ninety-Nines” and what is it?
6. A jet’s xxxx (or white trails) consist of water vapor and can be used to predict the weather. A thin, shorter tail indicates low humidity and fair weather. A thick, longer lasting tail signifies the early indication of a storm.
7. Known as the “Glider King,” xxxx (1848–1896) invented the first gliders that could travel longer distances and carry people. The Wright Brothers cite his research as a major inspiration for their own work. Berlin’s busiest airport is named after him.