Self Assessment 15.6

1. Fossil fuels are considered as a source of energy which is not
renewable. Why is it so?
Fossil fuels take millions of years to form under the surface of earth, and when its burnt, they are finished.


2. What happens if the fuel consumption is not spared? 
When the fuel consumption is not spared, it will eventually run out and we will have to find alternatives.

3. Write down the dangerous issues of having a nuclear power plant. 
- Radioactive

 materials can come into contact with people mainly through accidents in nuclear power plants, accidents in transporting radioactive materials, and escape of radioactive wastes.

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Radiation can penetrate deep inside the human body where they can damage cells and thereby initiate a cancer. They can also cause genetic diseases in offsprings.

4. According to your opinion, in order to produce electrical energy, what is the best energy that fits with the current situation and is pollution free?
I think solar energy is the best energy that fits with the current situation. Solar energy is easy to get and it is pollution free and often noiseless. The sun will always beam onto Earth so this energy will never run out.

5. Write your suggestion in order to produce a very high temperature, so that a large amount of electricity can be generated from the use of seawater.

From the tidal energy of the seawater, we can convert it into electrical energy by putting a wave energy converter.

http://diditsmile.blogspot.com/2012/09/menghasilkan-energi-listrik-dari.html
http://www.physics.isu.edu/radinf/np-risk.htm
http://wiki.answers.com/Q/Why_are_fossil_fuels_considered_non-renewable