Science and technology are constantly evolving, and over the centuries, man has discovered ways to harness various forms of energy. The very first source of energy to be harnessed was the wind. Ships with sails were the norm until the invention of steam-powered engines. And for the latter half of the 20th century, coal was still the most prevalent source of energy.
It was powerful and consistent, but it was inefficient and highly pollutive. Then by the mid 20th century, the power of the atom was harnessed and the era of nuclear energy began.
Frequently asked Questions on CBSE Class 10 Science Notes Chapter 14: Sources of Energy
What is a ‘Conventional resource’?
Conventional sources of energy can be described as non-renewable sources of energy which have been used since a long time.
Why is conservation of nature important?
Humans are dependant on nature and its various resources for their survival and sustenance. Preserving wildlife and nature is important as constant depletion of nature will only lead to exhaustion of these.
What is ‘Nuclear energy’?
Nuclear energy is the energy in the nucleus, or core, of an atom.