Teaching Lift to Seventh Graders

>>I don't think there's any real debate, unless it involves lift demons.
>>The physics-based way lift works is that the wing shoves the air down.
> 
> 
> Does it?  How about in something like:
> 
> http://www.aether.demon.co.uk/coolkit/graphics/ekranoplan/antishipping.jpeg
> 
> ?
> 

Yes.  You can clearly see the effect of the displaced air on the water. 
  Either that, or the water's just frightened as that enormous, ugly 
object passes over.

The third possibility is that the lift demons are dragging their feet.

  - ken