The answer to 'how does sink work' is that a sink is a plumbing fixture used for washing hands, dishes, and other tasks. It is connected to the home's water supply and drainage system, allowing water to flow in and out as needed. The basic components of a sink include the basin, faucet, drain, and p-trap. When you turn on the faucet, water flows into the basin, and when you pull the drain, the water flows out through the drain pipe and into the home's sewage system.
The p-trap is a curved pipe located under the sink that helps prevent sewer gases from entering the home. It holds a small amount of water that creates a seal, blocking odors and preventing clogs. Over time, the p-trap can become clogged with debris, requiring cleaning or replacement to ensure proper drainage.