Amazing inventions - the aeroplane
out of 4
Post on 13-Aug-2015
- 1. Air plane
One of the famous inventions
- 2. Key words:
-connected with the state, not with the army.
- A piece of material that is fixed to sth at one side only, often convering an opening.
using air currents.
-To try to do sth that is difficult.
-The hot gas that water changes into when it boils.
-A person who is travelling in a plane, cac, train, etc. but without driving it.
-Ahigh, very steep area of rock.
-The army, navy, etc.
-The height of sth above sea level.
- 3. The first attempts were effort to fly like a bird. First they tried to attach feathers to their arms flapping, then they made a hot air balloon during the civil war hot air ballons were used by the armies to look at enemy troops.
The first airplane that was flown was glider, and very hard to use. Early gliders were launched from high places like cliffs
and floated on the wind to the ground.
In 1890 the inventor Hiram Maxiam, built a steam powered flying machine and he tested it. In 1909, Wright brothers can tract from the military to build the first military plane.
Airplanes now travel thousands of miles at altitudes of more than 7 miles, carrying over 300 passengers.
- 4. Sir George Cayel made the first glider that actually flew
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