Non renewable resources

10,256 views 18 slides Dec 13, 2017
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About This Presentation

Non–renewable resources are those which once used up ,are exhausted, and are either non renewed by nature, or renewed very slowly over millions of years.
example-Fuels like coal and petroleum, and minerals like gold, iron and copper.
why is it important to save minerals-The mineral resources on th...


Slide Content

Non-renewable resources Ishan singhal Class-IV basant

What are non-renewable resources? Non–renewable resources are those which once used up ,are exhausted, and are either non renewed by nature, or renewed very slowly over millions of years.

Examples Fuels like coal and petroleum, and minerals like gold, iron and copper.

Minerals and fuels Rocks on the earth are made up of substances called minerals. Minerals are another important natural resources. The minerals obtained from the earth are in the impure form. They are purified and used to make a number of things. We get metals such as iron, copper aluminium, gold and silver from minerals. These are shiny and hard. We also get other substances such as diamond, mica and limestone from minerals. Fuels such as petrol, diesel ,natural gas and coal are also obtained from the earth. Petrol ,diesel and natural gas are obtained from petroleum.

Petroleum Petroleum comes from the liquefied ,fossilized remains of plants and animals that live hundreds of years ago; once oil sources are depleted ,they cannot be replaced. Oils are used to create fuels such as gasoline, diesel and jet fuel. oils are used in the manufacturing of plastics and industrial chemicals.

Coal Coal is made when plant material has been compressed in bogs for millions of years. It is the most plentiful non-renewable resource in the world and is used to create half of the electricity.

Natural gas Natural gas is the result of decomposing plants and animals that were trapped beneath rock millions of years ago. It is used for cooking, heating homes and fueling vehicles.

Why is it important to save minerals? The mineral resources on the earth are non- renewable. Once used up , they will not be available to us any more. Mineral such as coal and petroleum , which give us fuels for providing energy , are being used up rapidly. We should used this resources carefully and not waste them. To save these minerals we should depend more on sources of energy that will never get used up, for example, solar energy and wind energy.

T h a n k y o u .