1
forceful air movement in different directions caused by the flow of wind over a mountain range.
2
a coordinated action or exercise that is conducted by a military organization.
3
a device that carries instruments through the air for measuring weather information such as temperature and wind speed.
4
a type of flight vehicle that gets its lift from heated air inside a large, strong balloon.
5
a device that shines a bright, concentrated light, often used for astronomical or entertainment purposes.
6
a flashing light at the top of a radio tower to signal the location of the tower to passing aircraft.
7
a substance composed of rock particles that is produced by an erupting volcano.
8
the process of releasing fuel from an aircraft midair to lighten its weight before landing.
9
a light aircraft made of a frame and strong cloth that is steered by a person hanging beneath it.
10
a collision between an aircraft and a bird or group of birds.
11
a situation in which an accident or disaster is barely avoided.
12
explosive devices that send out bright displays of light, often used for entertainment.
13
an event in which pilots demonstrate their flying abilities to a group of spectators.
