Physics

CAREER POINT ASSIGNMENT BASED ON NCERT SOURCES OF ENERGY ‘Energy is neither created nor destroyed’ still energy is lost why ? What are the characteristics of good fuel ? Why is fire hot ? Why do we use biomass as a source of energy ? Describe the harmful effects of burning fossil fuels ? Why there is going to be energy crisis in future ? What is a turbine ? Write the energy changes in a thermal power plant ? How is electrical energy generated in a thermal power plant How much energy is met by hydroelectric power stations in our country ? How is construction of dam a harmful technological growth ? Name two opposition movements against Dams in our country ? What is the composition of biogas ? Disadvantages of wind mills ? How is charcoal produced and what is the purpose of producing charcoal ?