Q. 115.0( 1 Vote )

What did primitive m

Answer :

Primitive men made use of fire as an external source of energy for heating, lighting and cooking. He then learnt to harness natural energy to fulfill his needs. The energy of the wind was the first to be harnessed. During the Middle Ages windmills were used extensively for grinding grain. The energy of falling water was harnessed by the use of waterwheels and turbines. Now he generates energy from natural sources such as Sun, water and fuels through efficient and advanced techniques. He has devised combustion engines, thermoelectric, hydroelectric and nuclear power plants as powerful and efficient means of generating energy.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Kinetic and Potential EnergyKinetic and Potential EnergyKinetic and Potential Energy39 mins
Work and Types of Work doneWork and Types of Work doneWork and Types of Work done40 mins
Conservation of EnergyConservation of EnergyConservation of Energy41 mins
Chapter TestChapter TestChapter Test45 mins
Elections- Mechanism and TypesElections- Mechanism and TypesElections- Mechanism and Types48 mins
Constitution - Formation and ObjectiveConstitution - Formation and ObjectiveConstitution - Formation and Objective63 mins
Construction-2Construction-2Construction-244 mins
Probability-2Probability-2Probability-246 mins
PYQ's Practice -ConstructionPYQ's Practice -ConstructionPYQ's Practice -Construction47 mins
Construction-1Construction-1Construction-145 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses