Question

give reason for the following :
1 - solar energy is better than thermal energy.
2- water should not be thrown over a fire caused by petrol.
3- cng is better fuel for automobiles .
4- coal is called a fossil fuel.​

Answer 1

Answer:

Here is your answer

1) Solar energy is a renewable resource of energy as it can be used to produce electricity as long as the Sun exists. While thermal power is no-renewable source of energy because coal is used to generate electricity. 2) Solar energy is an alternative for fossil fuels as it is non-polluting and clean source of energy.

2-As water is heavier than petrol therefore slips down permitting the petrol to rise to the surface and continue to burn. Besides, the existing temperature is so high that the water poured on the fire evaporates even before it can extinguisher the fire. ... Thus the petrol fire cannot be extinguished by water.

3-Compared to diesel and even to petrol, natural gas creates far less nitrogen oxides (NOx) and particulate matter (PM) when combusted. The combustion process is also quieter. CNG is therefore a better 'urban' fuel than diesel. Lower CO2 emissions, both tailpipe and well-to-wheel.

4-Coal is called a fossil fuel because it was made from plants that were once alive! Since coal comes from plants, and plants get their energy from the sun, the energy in coal also came from the sun. The coal we use today took millions of years to form. ... Heat and pressure turned the dead plants into coal.