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 dynamo converts the energy into energy.
2)In plants, fuel is burnt to produce energy which is converted into electrical energy.
3) plants convert the energy of falling water into electricity.
4)A of our energy requirement in India is met by hydro power plants.
5)In order to produce hydel electricity, high-rise are constructed on the river to obstruct the flow of water and thereby collect water in larger reservoirs.
6) When a dam is constructed, the vegetation which is submerged rots under conditions and gives rise to large amounts of which is also a gas.
7) Hydropower is a source of energy since water in the reservoir would be refilled each time it rains.
8) Cow-dung, various plant materials like the residue after harvesting the crops, vegetable waste and sewage are decomposed in the absence of oxygen to give .
9)When the starting material is mainly cow-dung, it is popularly known as .
10)When the fuels are plant and animal products, the source of these fuels is said to be .