Control Stick

When you move the control stick left or right to bank, you are moving the glider around the longitudinal axis - roll. This axis would appear if a line were drawn through the center of the fuselage from nose to tail. 

When you pull the stick back or push it forward, raising or lowering the nose, you are controlling the pitch of the glider or its movement around the lateral axis. The lateral axis could be seen if a line were drawn from one side of the fuselage to the other through the center of gravity. 

When you move the rudder left or right, you cause the glider to yaw the nose to the left or right. Yaw is movement that takes place around the vertical axis, which can be represented by an imaginary straight line drawn vertically through the center of gravity.

Axes of Rotation