Robert+K

AIR PLANES media type="file" key="robert k.m4a"

I'm going to talk about how planes fly! In order to lift, the plane needs to move. The jet engine or the propeller makes the plane move forward so it can take off. To climb, or go higher, the pilot increases the engine power. To descend, or go lower, the pilot decreases the engine power.It means that you can go up and down. To turn the plane you turn the wheel. The lift is made by the air pressure over and under the plane's wing. As a plane moves forward, the air moving over the curved top of the wing travels farther than the air moving under it. It also travels faster. This makes the air pressure above the wing drop. Then the stronger pressure under the wing lifts the plane. In order to lift, the plane needs to move. During the 300's B.C., the Chinese discovered how to make kites. Later, large kites lifted people into the air. In 1783, two French brothers, the Montgolfiers, made a hot-air balloon. Two other Frenchmen floated over Paris in it. This was the first human flight. Here are some pictures.



Now play my Airplane game. Enjoy!