Sources of energy Worksheet-1

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

 

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

A. wood                                          B. gobar gas

C. atomic energy                          D. coal

 

  1. Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?

A. goethermal energy                  B. wind energy

C. fossil fuels                                 D. bio-mass.

 

  1. Which one of the following does not relate to the solar energy?

A. Wind energy                             B. Tidal energy

C. Nuclear energy                        D. Wave energy.

 

  1. The major cause of environmental pollution is the use of:

A. Ocean energy                           B. Hydrogen as a fuel

C. Biomass energy                       D. Fossil fuels

 

  1. The coal reservoirs in our country are expected to last for another :

A. 400 years     B. 500 years      C. 1000 years   D. 250 years

 

  1. A tree usually matures in more than :

A. 50 years        B. 60 years        C. 15 years         D. 100 years.

 

  1. The energy received by the Earth directly from the Sun is approximately which percentage of the Sun's total energy output?

A. 1%                                               B. 0.001%

C. 0.00000005%                         D. 0.0005%

 

  1. The approximate value of solar constant is :

A. 1.4 kj/min                                 B. 1.4 Wh/min

C. 1.4 kW/m2                               D. 1.4 kW/min

 

  1. The percentage of the solar energy reaching the Earth received by the plants is :

A. 5%                  B. 1%                   C. 10%                D. 0.1%

 

Answer Key:

  1. B

Explanation: On a cloudy day, heat radiation which com from the Sun do not reach the solar water heater so we can’t get hot water from solar water heater.

  1. C
  2. A
  3. C
  4. D
  5. D
  6. C
  7. C
  8. C
  9. B