Why is it that passengers at the rear of an aircraft encounter more turbulence than the front passengers.?

The airplane, when in autopilot, is flown to keep the nose as steady as possible, with the idea that the rest of the plane will follow... (a function called nose steer)... because of that, if the nose needs to correct up, the people in back go down and then when the nose needs to correct back down, the back end gets flung up... it also has to do with the center of gravity causing more movement in the aft of the airplane than the fwd portions...

To put what ALO said in an easier to understand way. Airplanes have more weight in the front. The heavy wings which hold the fuel are always and generally the heavy engines are in the front half of the airplane. In flight you have a balance, much like a see saw called center of gravity (CG). The closer to that point you are the less motion you feel since all motion moves about the CG (like the center of a see saw, it doesn't rise or fall) and amplifies as you move away from the CG, thus the rear of an aircraft which can move more (being further away from the CG), feels more motion. If you can't visualise it, balance a pencil on your finger, then tape a light coin or two to one end. The added weight means your finger (the center of gravity) will have to move toward the weight to balance the pencil. If the weighted end, simluating the front of the airplane moves up, the unweighted end being further from you finger has to move down much more. Try it. It'll make sense.

PS.

Yes fellow pilots I know I'm not making mention of center of lift, but a simple question deserves a simple easy to understand answer.

Its a little hard to explain but i'll put it this way.

Ever been on a rollercoaster? Well, if you sit at the back you get whipped around a lot more than if you were in the front seat of the coaster. The same is with airplanes, up the front the pilots are working and the back of the plane is being dragged along with it.

It's just like riding the school bus,you are behind the rear axle.In a plane you are behind the wings.The front cuts through the turbulence,but the rear catches all the after effects.

I find it interesting that everyone has their own theory and myself as a seasoned traveler do not experience more turbulence in the rear opposed to the front. It is noisier yes but more turbulent? Show it to me in writing please. This means that you folks must walk to the front of the plane while experiencing turbulence.

I'm going to discount this question (and answers) nonsense.

Well they don't actually encounter more, the effects are amplified because of their proximity to the stiff wing, and the CG(center of gravity)