We all know, Nepal is a countrythat is rich enoughin water resources. Hundreds of fast-flowing riversare found in our country. And water is the mainagent to produce hydroelectricity. Due to the presence ofmany large and small rivers & rivulets, we have thehigh potentiality of generating electricity. But itisverydifficult to construct hydropower stationsin the various parts of the country because of the difficulttopography. The absence of infrastructuralfacilities isthe major cause of it....

a.Renewable and son sewable source of energy.

b. Nuclear fission and nuclear fusion.

We all know the sun is the main source of energy. It is an extremely large mass of hot gasses. It provides energyfor all living beings on the earth directly or indirectly. It is the storehouse of energy. Itproduces energy called solar energy. Hence, the sun isthe ultimate some of energy.

We all know, fossil fuel formed from the fossils ofthe plants and animals that are buried under theearth's crust. It is cheaper as it is found in a huge amount.It is easier to transport this fuel It is used forvarious purposes like to run automobiles, factories, andeven to generate electricity. So, fossil fuel is usedmore than other fuels in the world.

We all know, biofuel is the organic source of energy thatcan be obtained from biomass, wood, hay, straw, etc. It is more eco-friendly than other sources. It also can beproduced continuously and effectivelyeven inrural areas. So, it is called a renewable energy source.

We all know, coal and petrol are obtained from the earth'scrust that is deposited under the earth's crust frommillions of years ago. These resources are limited in natureand get depleted aftera single-use. It cannot beproduced time and often. So, it is called a non-renewableenergy source.

The power generated by rotating turbines using water iscalled hydropower. It is the main source of energy which isa pollution-free and renewable source of energy.Energy trapped in the flowing river is used to generatepower on large scale in power stations which a cheaperfor thelong term & widely cued in electric devices. Butpetroleum products are temporary. They are only for ashort period of time. These products are formed fromthe dead remains of plants and animals that includemineral...

The meaning of E = mc² is when a body is movingat the speed of light, the energy produced would beequal to the product of mass that the body losesand the speed of light.

Here, E =Energy produced,
m = mass defect, and
c = velocity (speed) of light.

The scientist who profounded the equation wasAlbert Einstein.

The acute scarcity of energy sources due tooveruse or exploitation by the growing population iscalled anenergy crisis.Any 3 ways to solve it are:

1. Adaption of alternativeenergy sources.
2. Banning the use of non-renewable sources and encouraging the use of renewable sources.
3. Using existing sources wisely and economically.

Scientists arebusy making equipment based onsolar energy because solar energy istaken as themost important and effective alternative source ofenergy as it isavailable in every part of the earth anddoesn't haveany negative effects on the environment.The light energy from the sun is converted into electrical energywith the help of photoelectric cells. The converted electricenergy can be used again to get heat, light, etc.without having any deterioration to the environment.

So, it is the best...

The heatenergyobtained from the hot rocks this is present inside the earth is called geothermal energy.

In the place where earthquakes and volcanoes are active,the temperature increases highly in comparison to normal.The hot underground water can be brought to thesurface, fill the hole, and covered by earth. Two holes aremade in the upper surface. In one of them, cold watergoes inside, and in another hotvapor comes out.

This hot water vapor is used to run the steamengine rotating turbine to...

We all know, Nepal is an agricultural country. Naturalwastes, sewage, etc. can be used to generatebiofuel. The most practiced profession animal husbandry is also the source of different materials likedecayed grasses, dung, etc which again can be usedto get biofuel. On the other hand, a lot of denseforests are found in Nepal from where a high amountof biofuel can be taken. So, in the context ofNepal, biogas energy is the best source ofalternative energy.