Weighting filter is like a physical size sorting machine. It's like your mom sorting laundry, but with a filter instead of her hands. The filter can be set to a certain size, like a sieve, and whatever goes through the filter at that size gets trapped. This is used to sort materials, like soil or sand, into different sizes, like pebbles, stones, or grains. The filter weighs the particles or pieces to decide which goes through and which doesn't.