Rock, it's type, structure and uses
Rock The solid and hard material on the surface of the earth is called rock. Most of the earth's surface is made up of rocks. Rock is also found at the bottom of the sea and in the lower part of the frozen land. The mountains around us are made up of rocks. Stream banks and surrounding areas are also made of rock. Soil is formed by breaking rock into samll pieces. So small pieces of rock are found in the soil. Rock Structure Rocks come in a variety of shapes and colors. From the smallest stone to the smallest tumour are rocks. The gravel and sand used to build roads and houses are also small forms of rock. Rocks are made up of a variety of elements. The amount of elements in a rock varies. Physical Properties of Rock Structure Some rocks are made up of large particles. And some rocks are made up of leaves. Rocks are also made up of very small particles. Large-grained rocks become rough. Rocks made up of many fine grains are slippery. Hardness Rocks are both hard and s...