Sources of Energy

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1) The total energy during a physical or chemical process is .
2) Energy can neither be nor .
3) If we drop a plate from a height, the energy of the plate is converted mostly to energy when it hits the ground.
4) If we light a candle, the process is highly and the energy in the wax is converted to energy and light energy on burning.
5)In ancient times, was the most common source of heat energy.
6) The exploitation of as a source of energy made the industrial revolution possible.
7) The fossil fuels are sources of energy.
8)The oxides of carbon, nitrogen and sulphur that are released on burning fossil fuels are oxides. These lead to which affects our water and soil resources.
9)The pollution caused by burning fossil fuels can be somewhat reduced by increasing the efficiency of the process and using various techniques to the escape of harmful gases and ashes into the surroundings.
10) The simplest turbines have one moving part, a assembly.