Technology & Engineering Rockets/transportation

2. an object designed to produce some directional motion when in movement relative to the air.
6. aviation industry that makes money by transporting people and cargo in airplanes
7. a vehicular system that produces a force to propel the vehicle from its starting point
9. the layer that extends from 22 to 50 miles (35 to 80 km) above the earth.
10. the force that holds or lifts a craft in the air. It is critical for all flight.
13. space flights that use rockets to place payloads into orbit.
14. the point at which an orbit comes closest to earth.
16. the lowest region of space above the earth in which spacecraft and satellites operate.
17. a space flight that carries human beings into space and returns them safely to the earth.

1. a type of space travel represented by communication satellites and space shuttles.
3. rockets with two tanks. One contains the fuel, and the other contains oxygen.
4. the last layer of space above the earth that blends directly into outer space.
5. rigid airships with metal frames covered with skins of fabric
8. the farthest distance away from the earth.
11. the body of an aircraft that contains the flight crew passenger, and cargo units.
12. a type of orbit in which a satellite travels the same speed the earth is turning.
15. rockets that use a powder or spongelike mixture of fuel and oxidizer.