Question

I have a mixture of rocks,
sand, and water. I pass it
through a screen. What is left
on top of the screen and what
has fallen through the screen?

Answer 1

The Rocks have remained on top of the screen, while the sand and water have passed through it.

Answer 2

The rocks are on top of the screen while the sand and water have passed through due to the fact that they can pass through the meshing of the screen