Question

What are the benefits, if we switch off the engine of the vehicles at the red light on the road?

NCERT Class V
Environmental Studies - Looking Around

Chapter 12. What if it Finishes...?

Answer 1

the benifits are as follow 
it reduces pollution 
it saves fuel
it saves money it saves resources

Answer 2

Answer:

Firstly, cars mostly run on fossil fuels, that is, diesel or petrol which are non-renewable sources of energy. When the engine of the car is on, combustion of these fossil fuels continues to provide the necessary power.

Secondly, the combustion of fossil fuels causes air pollution. So whenever the car stops at a signal, we should switch off the engine.

Lastly, car engines in idle mode produce a vibration which sometimes can cause disturbance to the passengers inside the car. So we should switch off the engine of the car whenever it is possible.