Energy Sources

Solar, wind, water and nuclear energy (only qualitative discussion of steps to produce electricity).

What is the source of energy for all ecosystems?

The source of energy in an ecosystem is

State two characteristics which a source of energy must have.

Name the two groups in which various sources of energy are classified. State on what basis are they classified.

What is the main source of energy for Earth?

What is solar energy? How is the solar energy used to generate electricity in a solar power Plant?

What is a solar cell? State two uses of solar cells. State whether a solar cell produces a.c. or dc. Give one disadvantage of using a solar cell.

State two advantages and two limitations of producing electricity from solar energy.