Plastics are used in almost every human society. Because of our widespread use of plastics, it has become a significant source of pollution on Earth.
Describe 6 ways humans use plastics.
1. Plastic wrap: it helps keep meat fresh while protecting it from the poking and prodding fingers of your fellow shoppers.
2. Plastic bottles: we can actually lift an economy-size bottle of juice.
3. Plastics are used in portable phones.
4. Plastic car fenders and body panels resist dings
5. Plastic bags: they require less energy to produce than paper bags and are light to carry.
6. Vinyl siding and windows: they help cut energy consumption.
Give 6 reasons why plastics are so useful to humans.
1. Plastic can be recycled and you will find that when you start recycling you at least save money on trash bags, bottles and cups;
2. Plastic is light and anyone can lift a plastic bag or bottle;
3. We can recycle plastic;
4. If we destroy a plastic item, it’s usually replaceable at a reasonable price;
5. Plastic is cheap to buy and easy to obtain just about anywhere;
6. We can reuse many plastic items such as cups, bags, containers and many other items.
Give 4 consequences of plastic pollution to the environment or wildlife.
1. “Plastic makes up much of the streetside litter found in cities and throughout the countryside, and it’s rapidly filling up our landfills as well;
2. Making new plastic requires significant amounts of fossil fuels;
3. Some studies show that only 10% of plastic bottles created are recycled, leaving that extra 90% to take up space in landfills and killing ocean life;
4. Plastic bottles take up space in landfills. Plastic bottles make up approximately 11% of the contents of landfills;
CONCLUSION
Consider the amount of sheer waste a single meal or even serving produces (“Kraft Singles is second only to Individually Wrapped Breaths of Air ™ in the Most Wasteful Products Award”). Try to reuse glass or Tupperware containers for leftovers instead of plastic wrap. We should store water in the high grade blue plastic bottles only. Ask for tap water with lemon in restaurants.
References:
http://dwb4.unl.edu/Chem/CHEM869E/CHEM869ELinks/www.plasticsresource.com/plastics_101/uses/uses.html
http://www.professorshouse.com/your-home/environmentally-friendly/why-recycle-plastic.aspx
Senin, 31 Mei 2010
Function Plastic
Uses
1. Plastic is used as a covering for almost all electrical wires and cords
2. Plastic is easier to fix than metal it is now used to make car bumpers
3. Plastic wrap is used to keep food fresh in the refrigerator
4. Plastic vinyl is used for the siding of houses, because its look and easiness to install & clean
5. Plastic foam is used a insulator for homes, building to save energy consumption
6. Plastic is used to save money in shipping packages
Consequences
1. Plastic is non-biodegradable it could take 100 years to decompose
2. Plastic when burned at landfills it releases toxins in the air
3. Plastics containers have chemicals that get into foods within and when eaten the chemicals transfer into humans causing many health problems
4. Plastic discarded uncheck hurt our animal wildlife
1. Plastic is used as a covering for almost all electrical wires and cords
2. Plastic is easier to fix than metal it is now used to make car bumpers
3. Plastic wrap is used to keep food fresh in the refrigerator
4. Plastic vinyl is used for the siding of houses, because its look and easiness to install & clean
5. Plastic foam is used a insulator for homes, building to save energy consumption
6. Plastic is used to save money in shipping packages
Consequences
1. Plastic is non-biodegradable it could take 100 years to decompose
2. Plastic when burned at landfills it releases toxins in the air
3. Plastics containers have chemicals that get into foods within and when eaten the chemicals transfer into humans causing many health problems
4. Plastic discarded uncheck hurt our animal wildlife
Dangerous of plastic
Plastics are used a lot by doctors and dentists because they are hygienic and will not poison our bodies. Dentists use acrylic to make special white fillings.
Many clothes are made from synthetic fabrics. The fabrics are made from plastic fibers that have been spun out really fine, then made into yarns for knitting or weaving.
Many glues are plastics. PVA white glue is a solution of PVA dissolved in water. When it is used to glue two pieces of wood together, the water is soaked up by the wood. The PVA is soaked up with the water. When the water evaporates, the PVA stays behind in the joint, making a strong plastic bridge.
Most paints are made from plastic resins. Some, like acrylic house paints and polyurethane varnish are dissolved plastics which dry to form a tough waterproof skin. Other polyurethane, epoxy and polyester paints have to be mixed with a hardener which makes a chemical reaction.
Teflon coatings on saucepans and irons are sprayed on as dry powder then baked in a hot oven to make the particles melt together. This is called powder coating and it is also used to put a very tough layer of epoxy or polyester on metal articles like furniture.
Last but not least, Plastic is widely used for plastic bags. In my country, the use of plastic bag for grouping the things we purchased in store is commonly used. Every market in my country have it because it’s cheap.
Some consequences of plastic pollution to the environment are :
Plastic bags litter the landscape. Once they are used, most plastic bags go into landfill, or rubbish tips. Each year more and more plastic bags are ending up littering the environment. Once they become litter, plastic bags find their way into our waterways, parks, beaches, and streets. And, if they are burned, they infuse the air with toxic fumes.
Plastic bags are non-biodegradable. And one of the worst environmental effects of plastic bags is that they are non-biodegradable. The decomposition of plastic bags takes about 1000 years.
Petroleum is required to produce plastic bags. As it is, petroleum products are diminishing and getting more expensive by the day, since we have been using this non-renewable resource increasingly. Petroleum is vital for our modern way of life. It is necessary for our energy requirements – for our factories, transport, heating, lighting, and so on. Without viable alternative sources of energy yet on the horizon, if the supply of petroleum were to be turned off, it would lead to practically the whole world grinding to a halt. Surely, this precious resource should not be wasted on producing plastic bags, should it?
Plastic bags kill animals. About 100,000 animals such as dolphins, turtles whales, penguins are killed every year due to plastic bags. Many animals ingest plastic bags, mistaking them for food, and therefore die. And worse, the ingested plastic bag remains intact even after the death and decomposition of the animal. Thus, it lies around in the landscape where another victim may ingest it.
References :
• http://library.thinkquest.org/C003844/a_effects.htm• http://www.calibre.co.nz/plasticf.htm• http://www.dancewithshadows.com/business/pharma/plastic.asp• http://www.what-you-make-it.com/Plastic-pollution.html• http://www.buzzle.com/articles/environmental-pollution-the-harmful-effects-of-plastic-bags.html
Many clothes are made from synthetic fabrics. The fabrics are made from plastic fibers that have been spun out really fine, then made into yarns for knitting or weaving.
Many glues are plastics. PVA white glue is a solution of PVA dissolved in water. When it is used to glue two pieces of wood together, the water is soaked up by the wood. The PVA is soaked up with the water. When the water evaporates, the PVA stays behind in the joint, making a strong plastic bridge.
Most paints are made from plastic resins. Some, like acrylic house paints and polyurethane varnish are dissolved plastics which dry to form a tough waterproof skin. Other polyurethane, epoxy and polyester paints have to be mixed with a hardener which makes a chemical reaction.
Teflon coatings on saucepans and irons are sprayed on as dry powder then baked in a hot oven to make the particles melt together. This is called powder coating and it is also used to put a very tough layer of epoxy or polyester on metal articles like furniture.
Last but not least, Plastic is widely used for plastic bags. In my country, the use of plastic bag for grouping the things we purchased in store is commonly used. Every market in my country have it because it’s cheap.
Some consequences of plastic pollution to the environment are :
Plastic bags litter the landscape. Once they are used, most plastic bags go into landfill, or rubbish tips. Each year more and more plastic bags are ending up littering the environment. Once they become litter, plastic bags find their way into our waterways, parks, beaches, and streets. And, if they are burned, they infuse the air with toxic fumes.
Plastic bags are non-biodegradable. And one of the worst environmental effects of plastic bags is that they are non-biodegradable. The decomposition of plastic bags takes about 1000 years.
Petroleum is required to produce plastic bags. As it is, petroleum products are diminishing and getting more expensive by the day, since we have been using this non-renewable resource increasingly. Petroleum is vital for our modern way of life. It is necessary for our energy requirements – for our factories, transport, heating, lighting, and so on. Without viable alternative sources of energy yet on the horizon, if the supply of petroleum were to be turned off, it would lead to practically the whole world grinding to a halt. Surely, this precious resource should not be wasted on producing plastic bags, should it?
Plastic bags kill animals. About 100,000 animals such as dolphins, turtles whales, penguins are killed every year due to plastic bags. Many animals ingest plastic bags, mistaking them for food, and therefore die. And worse, the ingested plastic bag remains intact even after the death and decomposition of the animal. Thus, it lies around in the landscape where another victim may ingest it.
References :
• http://library.thinkquest.org/C003844/a_effects.htm• http://www.calibre.co.nz/plasticf.htm• http://www.dancewithshadows.com/business/pharma/plastic.asp• http://www.what-you-make-it.com/Plastic-pollution.html• http://www.buzzle.com/articles/environmental-pollution-the-harmful-effects-of-plastic-bags.html
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