Filtering is a method used to separate solids from liquids or gases. It uses a barrier such as paper, cloth, or a special filter. The barrier allows some parts to pass through while others are held back. This process helps remove unwanted particles.

Filtering is used in water purification, cooking, and air systems. It takes place in homes, industries, and natural processes. Filters are found in devices such as coffee makers and water systems. Filtering is a common way to separate materials.