A few days ago I was chatting to one friend in facebook, who has her BSc first year exam ahead. She brought me down to my memory lane where we had a course called general properties of matter (in short GPM) in BSc. It had stuff like fluid mechanics, surface tension, elasticity. I used to hate the course since many things were quite obscure and everything sounded very mechanical (just like derivations and digestion of formulas).
Nonetheless, a few days after the conversation I found someone sharing this besutiful pic on my facebook wall.
Yes, it is the surface tension of liquid that lets the wasp float on the water.
Do you know the Science Guy (Bill Nye)? Here is a funny video from the 90’s TV show. See if you can understand all the demos (specifically the balloon one).