Natural And Energy Resources NET Exam Paper 1
Natural and Energy Resources :-
Solar, Wind, Soil,
Hydro, Geothermal, Biomass,
Nuclear and Forests.Energy is a natural mechanism’s , its ability to execute an duty. There are many different kinds of energy, including temperatures, mechanical or physical energy, light , electricity, and others. When fossil fuels produce the energy, during this process carbon dioxide and other harmful greenhouse gases are released
There are two types of energy :-
1 Renewable Energy
2 Non Renewable energy
Renewable energy comes from natural sources that change itself faster than they are used up. like solar energy, wind energy.
On the reverse, non-renewable fossil fuels like coal, oil, and gas require tens of millions of decades to create.
1 Solar Energy :- The main source of energy is the sun. An example renewable energy source is sunlight. it is an environmentally friendly resource, means it can be preserved. There is no renewable or sustainable alternative to coal or gas once it is used up.
It keeps us pleasant heats up our homes during the day, dry agricultural goods, among many other things. However, the possibility is significantly bigger. Electricity can be generated from solar energy. through Solar photo voltaic (SPV) cells and its help to convert solar energy directly into electricity.
Either the battery or the generated electricity can be used to store it. presently solar energy is used for supplying water, residential light, street lighting. and commercial uses also.
Advantages :-
It is a free, natural, and permanent supply.
It is widely accessible.
It is not a pollutant.
There are no greenhouse gases released by it.
It doesn’t lead to the same kind of eco-system and forest degradation that most fossil fuel activities do.
Disadvantages:-
Solar systems don’t work at night
2 Wind Energy :- The natural flow of air across land or water is known as wind. When blades are turned by the wind, the rotor to which they are attached is also turned.
Advantages
It protects the environment.
It is widely and completely accessible.
Disadvantages
A significant expenditure requirement
The generation of power is affected by the fact that the wind’s speed is not consistent.
3 Biomass :- Biofuels are mostly made from wood ingredients, byproducts of industrial food production or crop cultivation, or by recycling and reusing substances. Without required any modification, it can be used for equipment. Biofuel is easily accessible, recyclable, environmentally friendly.
A significant source of energy, biomass accounts for around one-third of all fuel consumed in our nation and is used in about 40% of rural households. Biomass is frequently used for home heating and cooking.
Agricultural waste, wood, charcoal, and dried dung are the different types of biomass that are employed.
As a result of the process of photosynthesis, plants create biomass by storing solar energy.
Different energy sources are created by the multiple cycles this biomass goes through. A good example would be agricultural waste used for cooking or food for animals that create dung.
4 Nuclear and Forests :- The core of an atom is the location where nuclear energy is found. The small components of the molecules that make composed solids, liquids, and gases are called atoms.
Electrons, protons, and neutrons are the three particles that make an atom. Protons and neutrons compose the nucleus of an atom, which is protected by electrons.
Electrons have a negative electrical charge, while protons have a positive charge. There is no electrical charge on a neutron.
After nuclear fission, Atoms releases energy , Nuclear fission can break the bonds, and the released energy can be used to create electricity, and uranium atoms are usually utilized in nuclear power plants. When a uranium atom breaks down, additional neutrons are also released. The process keeps repeating again as these neutrons continue to explode into more uranium atoms. U-235 is comparatively uncommon.