What term is associated with the grains found at the beach?

Sand is a term specifically used to describe the small, granular particles found on beaches, formed from the weathering and erosion of rocks and minerals over time. The grains of sand are typically made up of quartz, shell fragments, and other natural materials, and they are characterized by their small size and smooth texture, which comes from being worn down by the movement of water and wind.

In contrast, dirt refers to a broader category that includes any unwanted soil or earth matter, which doesn’t specifically relate to the sandy environment of the beach. Soil refers to the top layer of the earth's surface, which supports plant life and is composed of organic matter, minerals, gases, liquids, and organisms. It is more complex than sand and involves a mixture of various particle sizes, including clay and silt. Gravel consists of larger, coarser particles typically found in riverbeds or other environments rather than finely textured grains found on beaches.

Thus, when referring to the specific type of grains associated with a beach environment, "sand" accurately describes the distinct characteristics and origins of those grains.