The color of sand grains comes from the original material that formed the sand. For example, white sand on tropical beaches is pulverized pieces of dead coral. (Coral skeleton is white because it is made of calcium carbonate, a mineral also found in chalk and human bones.)

These minerals can come from erosion of nearby landscape, volcanic eruptions, and even the grounding up of sea shells over decades, so the color and content of sand reflect the makeup of the surrounding landscape and even the beach’s inhabitants.

Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar. Once they make it to the ocean, they further erode from the constant action of waves and tides.

A beach forms when waves deposit sand and gravel along the shoreline. Over time they are worn smooth from being rolled around by waves. The rocks usually reflect the local geology.

A pebble is big enough to cause discomfort when stuck in your shoe! A stone you can hold in your hand and can come in many colors and shapes. River rocks are wonderful smooth rocks formed by streams and waves rocking them against other rocks.

Abrasion- Rocks collide causing the rocks to chip and become smooth. resistance- the sand creates resistance and acts like sand paper to smooth the rocks. motion of the water- The motion of the water pushes the rocks and causes the rocks to collide with the rocks and stream beds.

Weathering, or the wearing-away of rock by exposure to the elements, not only creates smooth rocks as well as caves and canyons, but it also slowly eats away at other hard objects, including some statues and buildings.

These pebbles form as the flowing water washes over rock particles on the bottom and along the shores of the river. Because river current is gentler than the ocean waves, river pebbles areusually not as smooth as beach pebbles.

Because they’re comfortable to hold. Things with sharp edges or rough surfaces are abrasive. They can damage or tear your skin. Smooth, rounded surfaces don’t hurt you, so it’s pretty easy to see why we tend to prefer them.

Rock abrasion occurs when rocks collide with one another or rub against one another. When two pieces of rock are rubbed together, the mineral grains in the rocks can be broken away from the rock surface. Rock abrasion occurs commonly in landslides where pieces of rock slide past one another as the mass moves downhill.

Carbonation is a chemical process where the main reactant is the carbon dioxide gas which mainly produces different carbon substances such as carbonates, bicarbonates and carbonic acids. Solution is a mixture of two different substances which are able to completely or partially mix with each other.

As nouns the difference between solution and hydration is that solution is a homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances while hydration is (chemistry) the incorporation of water molecules into a complex with those of another compound.

A form of weathering where the grains of a rock become loosened and fall out, to leave a pitted, uneven surface.

Example in the deserts. Granular Disintegration: When the agents of weathering, reduce rocks made up of different minerals to small pieces and fragments, it is called granular disintegration. Exfoliation: The changes in temperature may create fissures or cracks in rocks.

1 : consisting of or appearing to consist of granules : grainy. 2 : finely detailed granular reports.

Granular Disintegration The splitting of rocks along the joints into blocks is called block disintegration. A form of weathering where the grains of a rock become loosened and fall out due to repeated heating and cooling as a result of temperature changes.

Block disintegration is when the rocks split along joints forming large rectangular shaped blocks. Granular disintegration is when grains of a rock become loosened and fall out, to leave a pitted, uneven surface because of changing temperature.

Granular Disintegration: When the agents of weathering, reduce rocks made up of different minerals to small pieces and fragments, it is called granular disintegration. Exfoliation: The changes in temperature may create fissures or cracks in rocks. This is called exfoliation.

While Granular disintegration process of physical or mechanical weathering due to repeated heat and cooling because of temperature change. As a result of alternative expansion and contraction of minerals in rocks causes the rock to break down into small pieces.