What kind of mirror-concave, convex or plane-would be best suited for use in a solar cooker ? Why ?

What is a good fuel ?

If you could use any source of energy for heating your food, which one...

What are the disadvantages of fossil fuels ?

Why are we looking at alternate sources of energy ?

How has the traditional use of wind and water energy been modified for...

What are the limitations of enegry that can be obtained from the ocean...

What is geothermal energy ?

Name two energy sources that you would consider to be renewable. Give ...

Define renewable or conventional sources of energy.

Name two common varieties of coal.

What is biogas ? How is it obtained ?

Why is there a need to harness non-conventional sources of energy ? Gi...

Define nuclear fission giving one example.

What are the advantages of nuclear energy?

What are the limitations of extracting enegry from : (a) the wind ...

On what basis would you classify energy sources as : (a) renewable a...

What are the disadvantages of using a solar cooker ? Are there places ...

What are the environmental consequences of the increasing demand for e...

Hydrogen gas has high calorific value but it is not used as a domestic...