2.  Some technological advances can have an enormous social impact.  Let’s debate: “Do you think engineers would be able to do their work as quickly and efficiently if they didn’t have computer graphic tools?”

3.  Humans use technology as a tool.  However, many of these advances also cause problems. COLEGIO DE FOMENTO MONTEAGUDO-NELVA CENTRO BILINGÜE Mobile phones: use them too much, distracting or annoying Computer games: extreme violence or discrimination Genetical modified foods can have an impact on health Computer piracy Do you know more?

4.  Human evolution has led to an unstoppable environmental degradation.  All technological activity will alter the environment to some extent.  After the Industrial Revolution we began to extract natural resources and fuels very quickly. COLEGIO DE FOMENTO MONTEAGUDO-NELVA CENTRO BILINGÜE Three major problems

5. COLEGIO DE FOMENTO MONTEAGUDO-NELVA CENTRO BILINGÜE 1. Pollution and waste. 2. Depletion of energy resources. 3. Disappearance of plant and animal species and habitats. SOLUTIONS R R R

6. 1. 1. Make a poster with images of forest fires, erupting volcanoes, smoking chimneys and as many other sources of pollution as you can think of. Label each image with the pollutants it produces. 2. 2. Write a definition of desertification with your own words. What’s the effect of desertification on the soil?

7.  An energy source that can be used instead of fossil fuels  It is usually a renewable source of energy that could be used should fossil fuels run out

8.  90 per cent of the worlds energy supply’s come from fossil fuels.  Because they are fossil fuels they DO have a life expectancy.  Burning fossil fuels has increased atmospheric pollution.  Vehicle exhausts contribute to acid rain more so than power stations burning coal.  The carbon stored in fossil fuels is released as carbon dioxide when they are burnt – this leads to the green house effect and global warming

9. A. Nuclear Power: A. Nuclear Power: (They are trying to avoid this type, IS NOT RENEWABLE)  The nuclear power was seen as the answer. Huge amounts of power could be produced from a small amount of uranium  However, it was not well known that it produced radioactive waste  The waste is dangerous to health and life for hundreds of years  There is no secure place for storage.  Public confidence has also been shattered by the explosion at Chernobyl in 1986

12. Can be used for mechanical tasks, e.g. pumping water Can be used for generation of electricity for direct use or storage in batteries