Cafeenman is correct on this one Cougar, go ask your instructor again for clearification. Elevator changes pitch and makes the nose of the plane go up or down if that makes you feel better about the name. Without thrust (the engine) you can point the nose up and the plane ain't going anywhere. The better explanation for the beginner is that to gain altitude you add throttle with the nose of the plane up. To loose altitude decrease throttle with the plane level or slightly down attitude, that way you won't gain speed on a landing approach.

The video is well done and was a lot of work. If you guys want to tweak it with some of the suggestions here that great but I'm sure beginners will appreciate it and gain from watching it "as is". It's not a video about choosing a plane or starting a plane so the defiencies mentioned about those areas don't really apply in my mind. Nice job.