How does water get filtered while passing through sand, charcoal, etc.?

Question

How does water get filtered while passing through sand, charcoal, etc.?

In: 3473

Answer 1

Let’s setup our imaginary workshop!

– Place a strip of the rough side of velcro over the side of a bowl or cup.

– Fill the bowl or cup with water and small particles, such as tiny rocks and dirt.

– Pour the water out slowly, over the velcro.

– Notice all the junk that gets trapped.