• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
Page
  1. 1
    1
  2. 2
    2
  3. 3
    3
  4. 4
    4
  5. 5
    5
  6. 6
    6
  7. 7
    7
  8. 8
    8
  9. 9
    9

I am investigating which supermarkets have the strongest plastic bags; I have tested this out in an experiment. I will also be researching whether plastic bags are good or bad for the environment and how they can be replaced or used differently.

Extracts from this document...

Introduction

Plastic Bags Introduction I am investigating which supermarkets have the strongest plastic bags; I have tested this out in an experiment. I will also be researching whether plastic bags are good or bad for the environment and how they can be replaced or used differently. It is estimated that we use over 500 billion plastic bags worldwide every year, which is nearly 1 million bags used every minute. In the UK It is estimated that we use 10 billion which is about 167 bags per person. They are very controversial as they take a very long time to break down and only 1 in 200 plastic bags in the UK are recycled; they pose a choking hazard for wildlife and children, plastic contains a lot of chemicals and some found could cause cancer and people find that there are many other replacements like using paper bags instead. Plastic is an organic substance consisting of large molecules called polymers. It is distilled from wood, coal, oil and even natural gas by chemicals such as hydrogen, nitrogen, oxygen and carbon. Other chemicals present in plastic may include chlorine, sulphur, silicone and fluorine. Plastic bags are made in a number of ways and for a number of purposes; each plastic bag is made of a polymer. Polymers are large molecules that contain lots of a chosen repeating monomer. Plastic bags are made from the monomer ethylene (ethene). These ethylene molecules are made into polyethylene. Polyethylenes are generic in that they include all ethylene that has been polymerized, but they may have other characteristics. ...read more.

Middle

I could have maybe improved the reliability of my results if I had repeated it more times and comparing my results with someone else's to see if we are getting the same. http://mexipreneur.blogspot.com/2010_08_01_archive.html Argument Why they are good? Plastic bags have so many practical uses. There are too many uses of plastic bags to be able to get rid of them. Plastic bags are used as bin liners - you cannot replace bin liners with another type of bag - it is not efficient and even worse for the environment. Banning plastic bags would just see paper bags clogging up our waterways. Plastic bags are handy to have and are an important part of our lives. Most plastic bags are made from a plastic called polyethylene; it is good, because it can, in its raw form, be changed to make any colour, shape, form or size desired which makes it inherently versatile. It is also very durable and watertight; making it an ideal carrier of heavy good, although it can't be recycled it can be re-used over and over again. Plastic bags can be melted and remoulded, and be made into plastic lumber in order to be used on things such as park benches and in fencing material. They also emit lower levels of both solid waste and greenhouse gases, and any plastic that goes un-recycled is capable of being burned in order to generate electricity, which can contribute to lowering sulphur emissions produced by burning fossil fuels like coal. ...read more.

Conclusion

If each plastic bag cost 10p, then people would not use them in large amounts because they are paying. If someone shopping twice a week, using six plastic bags each shop, and the bags cost 10p each, they would realize that that would cost over �60 a year so they would either not use as many, or they would start to reuse plastic bags. If everyone started to re-use plastic bags while they were shopping then, then plastic bags wouldn't be made in large numbers, and this way they wouldn't need to be replaced because people are using less. I think that plastic bags are ok as, some people believe that replacing them with paper bags or bags made out of cloth, or just banning plastic bags. I think that banning plastic bags would save plastic, but add to the environmentally harmful production of paper and cloth. We do still need something to put shopping or rubbish in and if we stop using plastic for the bags, we'll start using another resource which will be bad for the environment such as paper and as I stated above that'll be worse for the environment than plastic bags. I think that we could replace plastic bags, but with something that is environmentally friendly, it wouldn't harm the environment and then we would use less plastic bags. Or I think someone should invent a bag which is like a plastic bag but one that does not use up natural resources or harms the environment or kills people to keep everyone happy, something that is also biodegradable so even if it does get thrown away it will degrade in the landfills fast. http://mhsgroup. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Changing Materials - The Earth and its Atmosphere section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Changing Materials - The Earth and its Atmosphere essays

  1. Are humans to blame for Global warming or is it a natural phenomenon? ...

    This can affect the amount of carbon dioxide in the atmosphere but are identical to the amount of carbon dioxide that is locked away. This includes the trees that store carbon dioxide and the some carbon dioxide being dissolved into the oceans.

  2. To answer the question of weather or not hydrogen can be the fuel of ...

    2003 - on January 28th, President Bush pledged 1.2 billion to hydrogen fuel research as an effort to find an alternative energy source. Why do we need another energy source? Energy or Electricity, Is vital to our way of life without it modern miracles such as airplanes and Cars will

  1. Disposing of Materials made of Polymers. As we are using so many polymers ...

    Polymers have recycling symbols, many polymers can be recycled. This reduces the disposal problems and the amount of crude oil used. But the different polymers must be separated from each other first, and this can be difficult and expensive to do.

  2. Human Impact On the Environment

    There has been an increase of 80 parts per million concentration of carbon dioxide in the atmosphere. The line of best fit is a non-linear relationship with the points on the graph. There is a link between graph 1 and 2.

  1. Are we making the best use of crude oil?

    However, because of reservoir characteristics and limitations in petroleum extraction technologies, only a fraction of this oil can be brought to the surface, and it is only this producible fraction that is considered to be reserves. The ratio of producible oil reserves to total oil in place for a given field is often referred to as the recovery factor.

  2. GM foods - Harmful or Helpful

    Some medicines and vaccines need special storage conditions which are not available in countries suffering from poverty. So scientists are working on edible vaccines in tomatoes and potatoes. These will be easier and cheaper to transport, it is also much easier to administer.7 All the advantages listed above show how helpful GM foods actually are.

  1. Are Electric Cars better for the Environment?

    However, even here the picture is mixed, and wholly dependent on how electricity is generated in the country the car is being driven in. It can even depend on what time of day the batteries are charged because night-time electricity is less dependent on coal.

  2. Are Humans causing global warming?

    As the temperature rises, more gases are allowed into the atmosphere and it continues to heat until something happens (whether it?s just a ton of gases in the air or say, it gets so hot that there are volcanic eruptions that pour ash into the atmosphere or a completely unrelated event such as a meteor strike)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work