Water Evaporation

Thanks. I hope it helped the sciencekid? with the concept.

Hey, sciencekid? welcome to CR4.

Another good answer Lyn...as always.

I like the popcorn model, but prefer the box of ping pong balls model better. I was told it is like the box holds layers of ping pong balls, but it is just a little too small and one ball likes to pop up all the time. If you remove that ball, and the layer were to even out, it would again be just a little too tight and the next one would be removed.

With this model you can picture one layer with each ball pushing slightly on each other on the sides and if you then add the picture of another layer beneath pushing up on the top layer with the same force you wind up with the top layer of balls being pushed upon by 3 sides, because the 4th side is air and has less pressure the top layer of balls can escape at a rate dependent on environmental conditions (temp humidity etc.)

Was much easier to explain in class...

Thanks,

It's easier for me to imagine popcorn popping than layers of ping pong balls displacing each other. I've never had more than 5 ping pong balls at any one time anyway.

Oh?...you should totally get a few boxes of ping pong balls and just have fun! You could recreate my model (except they won't pop out unless you make a really cool model) or just throw them in an empty room with a tile floor and a few cats (that get along well)...where's del when we need him?