PETROSCRAP.COM » Thanks http://www.petroscrap.com Post, Search & Discuss on Buy / Sell Offers & Inquiries Tue, 07 Feb 2012 19:01:08 +0000 en hourly 1 http://wordpress.org/?v=3.3 science help please! last week of school and i need to pass! thanks a lot!? http://www.petroscrap.com/science-help-please-last-week-of-school-and-i-need-to-pass-thanks-a-lot http://www.petroscrap.com/science-help-please-last-week-of-school-and-i-need-to-pass-thanks-a-lot#comments Wed, 27 Jul 2011 18:09:18 +0000 admin http://www.petroscrap.com/science-help-please-last-week-of-school-and-i-need-to-pass-thanks-a-lot Click Here to Read More]]> Question by JeSse raY: science help please! last week of school and i need to pass! thanks a lot!?
Some landfills generate electricity by ________ produced from decomposing garbage.
A) collecting the hydrogen
B) using the chlorine
C) tapping the carbon dioxide
D) burning the methane gas
2.
Which of the following is the most important function of a landfill?
A) To provide leachate for other industrial processes
B) To contain buried waste and prevent it from contaminating the environment
C) To be as inexpensive as possible to build
D) To convert waste to ash to free up more space
3.
The ash produced when solid waste is incinerated is _______ than the original solid waste.
A) less toxic
B) more toxic
C) as toxic
D) more recyclable
4.
An advantage of a solid waste ______________ is that it reduces the amount of trash destined for landfills.
A) incinerator
B) storage facility
C) compressor
D) defibrillator
5.
Which items make up the largest percentage of waste produced by households and businesses?
A) Aluminum cans
B) Plastic bottles and packaging
C) Paper products
D) Yard waste, such as grass clippings and tree limbs
6.
The total amount of solid waste generated in the United States in the last 40 years
A) has decreased.
B) has doubled.
C) has tripled.
D) has not changed.
7.
Which of the following correctly describes the disposal of waste by composting?
A) Composting is a good way for individuals to reduce the amount of garbage they send to landfills, but large-scale composting is impractical.
B) Composting could reduce the amount of waste that restaurants, food-processing plants, and animal feedlots send to landfills.
C) Compost made from glass and plastics can be recycled and used as building materials.
D) Yard wastes, such as grass clippings, are not suitable for composting because they contain low levels of nutrients.
8.
Which of the following is a problem associated with landfills?
A) Source reduction
B) Leachate
C) Surface impoundment
D) Composting
9.
All of the following statements describe problems associated with modern landfills EXCEPT
A) Chemicals leaking out of the waste stored there may pollute wells or groundwater supplies.
B) Materials buried in landfills decompose in three years.
C) Explosive gases can be produced by landfills and may build up in the basements of nearby buildings.
D) We are running out of space to develop new landfills.
10.
Reducing solid waste by using less material is called
A) source reduction.
B) deep-well injection.
C) surface impoundment.
D) composting.
11.
An example of something that is biodegradable is
A) a leaf in a compost pile.
B) a plastic milk jug in a landfill.
C) a polystyrene burger container in a trash can.
D) a piece of polyester fabric.
12.
The main problem with so-called biodegradable plastic is that
A) only its organic portion actually decomposes.
B) animals often choke on the plastic litter that forms.
C) it releases toxic compounds as it breaks apart.
D) it includes a chemical produced by a rare bacterium.
13.
Creating steel from scrap instead of from ore uses about _________ less energy.
A) 25%
B) 50%
C) 75%
D) 95%
14.
Making products from recycled materials
A) is limited to metals.
B) often saves energy and other resources during the manufacturing process.
C) uses so much energy that it is not economically workable.
D) is not cost effective in most cases.
15.
You can use your consumer buying power to reduce solid waste by doing all of the following EXCEPT
A) Buying items that come in refillable bottles
B) Using rechargeable batteries
C) Buying products that have less packaging
D) Buying paper products like paper towels and napkins
16.
Which of the following is a TRUE statement about recycling?
A) It takes more energy to make steel from scrap than from newly mined ore.
B) Cities have never had trouble finding buyers for their recycled materials.
C) After they are collected, recyclable materials are cleaned and processed.
D) The process of recycling most products uses more energy than producing new products.
17.
Manufacturers could reduce waste and conserve resources by making products that
A) are cheaper.
B) are more durable.
C) require more packaging.
D) are more expensive.
18.
An example of source reduction is
A) composting.
B) recycling.
C) using canvas shopping bags.
D) surface impoundment.
19.
Wastes containing toxic, corrosive, or explosive materials are considered
A) biodegradable.
B) municipal.
C) hazardous.
D) solid.

20.
Surface impoundment is a method for
A) packing a landfill down.
B) disposing of hazardous waste by bringing it to the surface.
C) disposing of hazardous waste by allowing it to settle out and evaporate in a pond.
D) recovering raw material from manufactured goods.

Best answer:

Answer by Timothy D
For the biodegradable plastic portion of your questions, see the different kinds compared and contrasted at http://earthnurture.com .

What do you think? Answer below!

]]> http://www.petroscrap.com/science-help-please-last-week-of-school-and-i-need-to-pass-thanks-a-lot/feed 0 Help? Do you think it will polish out? Thanks in advance!? http://www.petroscrap.com/help-do-you-think-it-will-polish-out-thanks-in-advance http://www.petroscrap.com/help-do-you-think-it-will-polish-out-thanks-in-advance#comments Fri, 17 Dec 2010 22:33:56 +0000 admin http://www.petroscrap.com/help-do-you-think-it-will-polish-out-thanks-in-advance Click Here to Read More]]> I recently went online to look up some ways to remove sticker residue from my car. I tried a few ways and alot of them wern’t working great so I tried one option which was nail polish(not thinking) and it took most of the residue off. (I didn’t do this on the paint, it was on a plastic part) However, It discolored the plastic which was black and made it a little white. Not all white just kind of faded to white in the area where it was put on. I was wondering if there was a way to fix this such as polishing it out because I don’t want to replace it and pay like 40 – 100 dollars at a scrap yard. I feel so stupid now for using nail polish, but I clearly wasn’t thinking straight. By the way, It’s the rear plastic part on a pontiac sunfire (on the trunk).
The plastic is made black (all the way through) (it isn’t a painted black) You can still somewhat see the black behind it as it is a faded white/black colour.
**Nail Polish Remover** (Not Nail Polish)

]]> http://www.petroscrap.com/help-do-you-think-it-will-polish-out-thanks-in-advance/feed 2 Who can tell me where I can find some plastic recycling center in Orlando? Thanks a lot.? http://www.petroscrap.com/who-can-tell-me-where-i-can-find-some-plastic-recycling-center-in-orlando-thanks-a-lot http://www.petroscrap.com/who-can-tell-me-where-i-can-find-some-plastic-recycling-center-in-orlando-thanks-a-lot#comments Tue, 09 Mar 2010 14:34:19 +0000 admin http://www.petroscrap.com/who-can-tell-me-where-i-can-find-some-plastic-recycling-center-in-orlando-thanks-a-lot Click Here to Read More]]> I am buying plastic scrap including LDPE clear flim, HDPE bulk bins and some other plastic scraps. I pay all buying in cash.

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