Soil, Rocks and Minerals

Transcript

Difference between Soil, Rock and MineralsSoil is the loose top layer of the Earth where plants grow. Rock is a hard natural material found on And inside the Earth. Mineral is a natural substance That makes up rocks. What does Soil contain? Soil contain many things in the soil, such as sand, insects and worms. There may be many small organisms that we cannot see with our naked eyes. Plants and animals also become part of the soil as they decompose and decay. Different Types of Soil Farm soil is used for growing crops Garden soil is used for growing flowers Roadside soil is used for supporting roads Activity 11.4 :- Location from which soil sample was collected What I guessed about the soil? Observation of soil with naked eye including its colour and texture Observation of soil with magnifying lens Soil from a farm after ploughing Dark soil with plant matter Brown, loose Tiny plant pieces, sand particles, small insects visible Garden soil Rich soil with organic matter Dark brown, moist, sticky Decomposed leaves, earthworm eggs, root fragments Roadside soil Dry dusty soil Light brown, powdery Fine sand particles, small pebbles, less organic matterHow is Soil formed?Soil is formed by the disintegration (breaking apart) of rocks by actions of the Sun, water and living organisms over a long time (thousands of years). What is Rock? What are different rocks and their uses?Rock is a hard natural material found on and inside the Earth. Rocks are used in the construction of houses, buildings, temples, roads, dams and table tops. Different rocks and their Uses:- Slate is used for Roofing Laterite is used for Building bricks Granite, Sandstone and Marble is used for flooring Iron is used for Hand Axes and Arrowheads What are Minerals?Mineral is a natural substance that makes up rocks. Hence, Rocks are made up of minerals Important metals extracted from mineralsWhat are Minerals contained in our Phone?The basic mobile phones that we use contain about a dozen minerals like gold, silver, copper, cobalt, etc. Different uses of MineralsMinerals are used in the manufacturing of :- Airplanes (Aluminium) Jewellery (Gold, Silver, Diamond) Cars (Iron) Cosmetics (Talc and Mica) Electronic equipment (Copper and Silicon) Why should we conserve Minerals?Minerals are found in rocks Rocks take thousands to millions of years to form It is important to conserve and use responsibly because They Cannot be replenished quickly once exhausted