Sustainable energy

Question 1

What is energy, types of energy and energy conversions?

Answer 1

Energy is the ability to do ‘work’.
~Mechanical energy
~Thermal energy
~Chemical energy
~Light energy
~Sound energy
~Electrical energy
~Gravitational energy
~Nuclear energy
Whenever energy is converted from one form to another, the total quantity of energy remains the same.

Question 2

What is energy efficiency and energy transformations?

Answer 2

The efficiency of energy conversion is a concept that follows the law of conservation of energy.

Energy transformation are not 100% efficient as when
energy conversions take place, heat is also produced.

Question 3

What are Renewable and non-renewable energy resources?

Answer 3

Renewable energy sources are those that can be produced faster than they are used by society.

Non-renewable energy sources are those that are used up faster than they can be produced on Earth.

Question 4

What are types of fuels?

Answer 4

Hydrokinetic, wind, geothermal, solar energy

Question 5

What are biofuels, biogas, bioethanol and biodiesel?

Answer 5

Biofuels are fuels derived from plant materials
or animal wastes and is renewable.

Biogas
The gaseous mixure of carbon dioxide and methane.
Bioethanol
Conversion of starch to glucose, then conversion of glucose to ethanol and carbon dioxide.
Biodiesel
Mixture of esthers.