Yakub Pariyar

3. The layer that extends from 22 to 50 miles (35 to 80 km) above the earth.
5. space flight A space flight that carries human beings into space and returns them safely to the earth.
8. ships Ships used to haul both crated and bulk cargo.
10. The region lying just above the mesosphere. It is also called the thermosphere.
11. motor A type of power source attached to the stern of a boat.
12. craft Vessels owned by private citizens for recreation.
14. control A type of control system that makes a vehicle change its direction.
16. The lowest region of space above the earth in which spacecraft and satellites operate. turbojet engine A type of jet engine that was developed during World War II.
19. The last layer of space above the earth that blends directly into outer space.
20. A lighter-than-air nonrigid airship.
22. system A vehicular system that controls the speed and direction of the vehicle.
23. The region above the troposphere.
24. The force that holds or lifts a craft in the air. It is critical for all flight.
26. ships Large ships used for transporting people and cargo for a profit.
27. aircraft An aircraft that develops lift by spinning an airfoil. See fixed-wing aircraft.
30. waterway transportation Transportation on rivers, on lakes, and along coastal waterways.

1. space flights Space flights that use rockets to place payloads into orbit.
2. transmission system A system that controls and directs the power of an engine to do work.
3. transmissions Transmissions that have a clutch between the engine and the transmission.
4. The part of a long-distance truck where the power and operator units are placed.
6. A special type of boat suspended on a cushion of air.
7. The upward force exerted on an object immersed in a fluid.
9. ships Vessels that carry people.
13. A type of special boat that can travel on the surface of or under water.
15. the farthest distance away from the earth.
17. The body of an aircraft that contains the flight crew, passenger,and cargo units.
18. orbit A type of orbit in which a satellite travels the same speed the earth is turning.
21. fuel rockets Rockets that use a powder or spongelike mixture of fuel and oxidizer.
25. assembly A structure that provides steering capability for an aircraft.
28. the instruments that help pilots monitor and properly control aircraft.
29. The part of an aircraft that separates the air into two streams, providing lift.
31. fuel rockets Rockets with two tanks. One contains the fuel, and the other contains oxygen.