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00:00Hi kids! Today we will learn how rocks are useful in our daily lives. So let's start!
00:11Kids, we now know a lot about rocks and its types. Now let's learn how rocks are useful in our daily lives.
00:22Let's see some examples that show how rocks are important in our lives.
00:29Granite. Granite is a very tough and hard rock that is used in making kitchen shelves, floors, pillars, bridges, pavings, monuments, and many other exterior and interior design elements.
00:50Granite can be black, gray, green, or rust in color. It is very hard and strong, so it helps in making strong and durable structures for our houses and other buildings.
01:07Coal. Coal is a black colored soft rock, which is used for so many purposes. Steam coal or thermal coal is used in thermal power plants for generation of electricity.
01:26Cooking coal is used for producing steel, and steel is used almost everywhere these days.
01:36Coal is used in many industries, like paper manufacturing, chemical industries.
01:45Several chemical products are produced from the byproducts of coal, like soap, aspirin, dyes, plastic, fibers, such as rayon and nylon.
02:01Activated coal or carbon is used in filters with water purification.
02:09Marble is a smooth stone found in various colors, like white, pink, gray, green, and even brown.
02:20Marble is used for various purposes in architecture, like for making floors, kitchen shelves, and pillars.
02:31Marble is also used for making sculptures.
02:37Sandstone. Sandstone is a sedimentary rock, which is made up of compacted sand particles.
02:47Sand is composed of mineral particles, quartz, and feldspar.
02:54Sandstone is much resistant to weathering, so it was used for making many ancient buildings.
03:03Example, Red Fort in India is a building made up of red stones.
03:10Chalk. Chalk is also a type of soft rock, which is mainly used for writing on blackboards.
03:19It is made of a mineral named calcium.
03:24Chalk can be given any color, and we get different color of chalks in the market, but actual chalk rock is white in color.
03:35Slate. Slate is a black, brown, or grayish metamorphic rock. It is used in making boards for writing in classrooms.
03:48Slate rock is also used in making roofs in small hilly areas.
03:55Next type of rock is rock salt.
03:59Rock salt is type of rock, which is powdered to make a type of salt.
04:05It is commonly known as rock salt, and the mineral found in this rock is sodium chloride.
04:14This salt makes food delicious.
04:18Gemstones. Some rocks have precious minerals in them, and they are cut and polished to look beautiful and shiny.
04:30They are used in making jewelry and for other beautification and decoration purposes.
04:38Diamond. Diamond is the hardest substance known in the world.
04:44It is the hardest rock existing in nature, and is used in making jewelry of many kinds.
04:54Diamond is also used in many machines for cutting very hard things, as it is the hardest substance.
05:04Diamond is also the most expensive rock in the world.
05:11Metals. Some rocks contain metals, and such rocks are called ores, and metals are extracted from such ores using various processes.
05:26For example, iron ore is used to make iron and steel.
05:31Copper is extracted from copper ore.
05:36So kids, today we learned how important are rocks, and how rocks are useful to us in our daily lives.
05:45Now you may go ahead and take a quiz to learn more. Bye-bye!