G. Answer the following questions in detail.
1. Explain the different processes used for extraction of minerals.
2. Explain the importance of minerals in our life.
3. How is wind energy produced? Write down its advantages and disadvantages.
4. What is geothermal energy? Write down its limitations.
5. Suggest some methods by which we can conserve mineral resources.
Answers
Answer 1st
There are four main mining methods: underground, open surface (pit), placer, and in-situ mining. Underground mines are more expensive and are often used to reach deeper deposits. Surface mines are typically used for more shallow and less valuable deposits.
Answer 2nd
Just like vitamins, minerals help your body grow, develop, and stay healthy. ... The body uses minerals to perform many different functions — from building strong bones to transmitting nerve impulses. Some minerals are even used to make hormones or maintain a normal heartbeat.
Answer 3rd The advantages of wind energy are more apparent than the disadvantages. The main advantages include an unlimited, free, renewable resource (the wind itself), economic value, maintenance cost, and placement of wind harvesting facilities. ... Next, harvesting wind power is a clean, non-polluting way to generate electricity
Answer 4th First and foremost, geothermal energy is extracted from the earth without burning fossil fuels, and geothermal fields produce practically no emissions. What's more, geothermal energy can be very beneficial, as you can achieve savings of up to 80% over conventional energy usage.
Answer 5th People can conserve mineral resources by utilizing renewable resources. For example, using hydroelectricity and solar power as sources of energy may conserve mineral resources such as coal. ... Mineral resources may also be conserved through recycling. A good example is recycling of scrap metal.