Sources of energy Worksheets

Sources of energy Worksheet-1

1. A solar water heater cannot be used to get hot water on :

A. a sunny day                               B. a cloudy day

C. a hot day                                    D. a windy day

2. Which of the following is not an example of bio-mass energy source?

A. wood                                          B. gobar gas

Sources of energy Worksheet-2

11. An example of renewable source of energy is :

A. Coal               B. Petroleum     C. Sun                 D. Natural gas

12. What percentage of solar energy that strikes the periphery of the Earth is trapped by Earth?

A. 75%                B. 47%                C. 15%                D. 100%

Sources of energy Worksheet-3

21. The fraction of the total solar energy received by the Earth is :

A. one hundredth                         B. one thousandth

C. one billionth                             D. One millionth.

22. The approximate temperature of the surface of the Sun is :

A. 3000°C                                      B. 30,000°C