The plane can have three basic movements called YAW, PITCH and ROLL. Which ONE comment below is TRUE?

The rudder causes the plane to YAW
The ailerons on the wings cause the plane to PITCH
The ailerons cause the plane to YAW
The elevators cause the plane to ROLL

A plane has wings with retractable flaps. During landing and take off the flaps are fully extended. Once in the air the flaps are pulled back into the wing of the plane. What is the role of the flaps on the wing.

The flaps increase the surface area of the wing thus creating extra lift at lower speeds.
The flaps cause turbulence and this slows the plane down for landing.
The flaps contain fuel and it is dangerous to have the fuel inside the wing during take-off and landing.
The flaps allow the pilot to abort take-off or landing at a moments notice.

The wing has a very special shape. It is flat at the bottom and curved at the top. Which statement below best explains why?

Rounded surfaces cause less drag and less turbulence.
The wing is rounded because it stores the fuel tanks. A rounded shapes increases the capacity of the fuel tanks.
The shape causes low pressure to develop on top of the wing and high pressure on the bottom.
The rounded surface is there to allow maintenance staff to check for cracks in the wing and fuselage. It is esier to detect cracks on rounded surfaces rather than flat ones.