Renewable And Non Renewable Sources Of Energy

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  • 1. SOURCES OF ENERGY RENEWABLE AND NON RENEWABLE PRESENTED BY: ABHIRAJ CHAKRABARTI MBA- HEALTH AND HOSPITAL ROLL NO. 001

2. Types of resources. Problems of Non-renewable energy & methods to reduce pollution and conserve resources. 3. Learning Objectives

  • To understand what a resource is.
  • To understand the difference between non-renewable and renewable resources.
  • To understand the advantages/disadvantages of using non-renewable energy.
  • To understand how we can conserve resources/reduce pollution.

4.

  • Definition of what a resource is.
  • 2) List of as many resources.
  • 3) Many issues surrounding resources.

5. A resource is anything we can use to help us live and work Oil, coal, gas, trees, soil, wind, waves, sun, people, the countryside, water, rocks etc Conflict over ownership, depletion, pollution 6. What is a resource

  • A) Things that humans can use.
  • B) Fuel supplies already discovered that can be used in the future.
  • C) Recovery of waste products to convert into materials that can be used again.

7. WHY HAS RESOURCE USE INCREASED? Population Increase Increase in Technology Increase in purchasing power in LEDCs Increase in disposable income. 8. Fuel Use 9. Wealth (1990) Fuel Use (2002) 10. There is likely to be a big increase in the use of energy by the year 2010:

  • A) Because there will be more people in the world so they will need more energy.
  • B) There is likely to be a big increase in the use of energy by the year 2010 because the worlds population will have increased meaning that there will be higher energy requirements. More people will have things like fridges and have to cook food or keep warm, which means more energy used.

11.

  • Also, as countries develop they use more energy because they are able to afford labour saving devices, tools and gadgets which we take for granted in the developed world, like TVs, computers, cars etc. Energy is required not only in running these devices but also in their manufacture.
  • C) There will be a big energy increase by 2010 because statistics show that energy use has always increased over time and because there will be more people, they will use more energy than if there were less people. Also, China and India are using up lots of energy

12. Energy use increase as a country develops:

  • A) As countries become more developed there is a greater demand for energy because people get more materialistic and buy more products which use energy both in their manufacture as well as in their use. For example, people will buy labour saving devices like cars and dishwashers. These both use up energy when they are made and every time they are used. Also, as countries develop their industries develop and industry is a large consumer of energy.
  • B) As countries get richer they use more energy because everybody gets cars and electrical goods.

13.

  • These both use lots of oil and electricity, so this is why energy use will increase.
  • C) Energy use might increase as a country gets more developed because when a country gets richer its population increases dramatically. This rise in population means that more coal and gas is needed to heat their homes. They will also need lots more petrol and diesel to fuel all the extra cars and lorries that will be on the road.

14. Natural resource Renewable resource Non-renewable resource Energy Fuel 15. What is meant by the term non-renewable

  • A) Resources which cannot be used again and again, like water and wind.
  • B) Fossil fuels like coal, oil and gas, which are finite, and will eventually run out are examples. Once they have been used they cant be used again.
  • C) Fossil fuels made from trees and plants.

16. Advantages of Natural Resources Renewable Non renewable

  • Cheap to operate - Very cheap
  • Clean - Efficient
  • Do not damage the - Can produce a lot of
  • environment energy in a short time

17. Disadvantages of Natural Resources Renewable Non renewable

  • Expensive to build - They will run out
  • Can be noisy - Very dirty
  • Generally- Harmful to the
  • unattractiveenvironment
  • Does not produce-
  • lots of energy

18. Energy sources 19. Non-renewable energy resources Non-renewable types of energy can only be used once.There is a finite amount of these materials on the Earth so they will run out eventually. Non-renewable resources make up approximately 95% of the worlds energy. fossil fuels nuclear coal gas oil fuelwood Non-renewable energy biomass mineral 20. Fossil fuels How much is left ? 21. Ten things about Fossil Fuels:

  • Three main types: oil; coal; natural gas
  • Take millions of years to form
  • Cannot be replaced once used: non-renewable
  • Found beneath the ground
  • Can be difficult to get to
  • Burnt to give off heat
  • Burnt in power stations to generate electricity
  • Give off carbon dioxide when burnt
  • Fuelwood is a fossil fuel
  • One day they could run out

22. Advantages of using fossil fuels 23. Disadvantages of using fossil fuels.

  • Acid Rain (due to pollution)
  • Global Warming (due to pollution)
  • Resource depletion & competition

24. Acid Rain 25. How can acid rain be managed? gas flue desulfurization (water is sprayed down the chimneys and this turns the gases to sulfuric and nitric acids) construct taller chimneys use less energy more efficiently fluidized bed technology (limestone is burnt with the coal so that the sulfur remains with the limestone) burn coal that contains less sulfur use more nuclear or renewable energy 26. Environmental Concerns The warming of the Earths atmosphere, probably due to increased emissions of carbon dioxide. Global Warming 27. Greenhouse Effect 28. The Natural Resources Defence Council lists the following 9 consequences of climate change.

  • Warmer temperatures
  • More drought and wildfires
  • More intense rainstorms
  • More deadly heat waves
  • Increased spread of disease
  • More powerful & dangerous hurricanes
  • Melting glaciers
  • Sea level rise
  • Ecosystem changes and species die-off

29. The predicted impacts of global warming on the world. Bangladesh is already prone to flooding, so rising water levels could devastate the country. Rising temperatures worldwide would cause ski resorts to be wrecked as heat will melt the snow & ice there. Water shortages in the Middle East would cause the River Nile to dry up due to intense evaporation. Mediterranean beaches will vanish as water levels rise. Sahara desert could move northwards, even as far as Spain. Arctic ice cap melts. Heavy storms not only threaten southern USA, but also the insurance companies in the area face bankruptcy. Forests are damaged by heat and drought Permafrost ground will melt, causing massive landslides. Oil pipelines, houses and road foundations will be disintegrated 30. Below are a list of things that could be done to try to tackle global warming.Switch off lights & appliances Taxes on high polluting industries Choose energy efficient appliances Sign up to the Kyoto Protocol Recycle Use less fossil fuels and more renewable energy sources Use energy efficient transport Car sharing Improved public transport Higher taxes on polluting cars Grants for businesses that have clean policies Energy efficient light bulbs Offset carbon emissions Local Holidays 31.

  • The Kyoto Protocol
  • An international conference that took place in 1997 focussing on climate change.
  • Proposals:
  • Compulsory reduction in CO2 emissions by 5% for MEDCs by 2010.
  • LEDCs did not have to reduce emissions as they were still developing.
  • Problems
  • US did not ratify the agreement their emissions have increased by 3% a year since.
  • LEDCs are now very industralised China & India
  • The reduction wasnt big enough to have an effect environmentalists suggest 60% reduction is necessary.
  • Several MEDC even find it hard to meet the 5% target due to costs The UK emissions have increased by 5.5% between 1997 and 2005.

32. What is global warming

  • A) Global warming is the filling up of the earths atmosphere with pollution.
  • B) Global warming is the increase in the earths overall temperature.
  • C) Global warming is the hole in the earths atmosphere letting more heat in from the sun.

33. Why it is important to reduce the amount of carbon dioxide being released?

  • A) It is important to reduce the amount of CO2 because it is one of the greenhouse gases that is responsible for accelerating the natural greenhouse effect which is causing global warming.
  • B) It is important to reduce the amount of CO2 because it is one of the greenhouse gases that is responsible for causing a hole in the earths ozone layer which is causing global warming.