Your Questions About Recycling
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Filed under Recycling Q & A
Ruth asks…
What are the answers to these questions??? 10 points to best answer?
1) Why is the process in which rocks from one family turn into rocks from a different family called the rock cycle?
2) How is the recycling of rocks by earth like the recycling of newspapers, pop cans, or plastic by our community?
3) Explain how water can be involved in both Mechanical and Chemical weather?
4) Old gravestones are sometimes so weathered the writing is worn away. What type of weather could act on a gravestone?
5) What human activities can increase the rate of weathering?
The Expert answers:
1) If rocks start as Igneous, they are weathered and broken down. The remains of this process become Sedimentary. Sedimentary rocks are then subducted or otherwise put under heat and pressure which transforms the mineralogic make up making them Metamorphic rocks. Finally, with sufficiently high temperatures and pressures, Metamorphic rocks contribute to and melt themselves to make …Igneous rocks. The real answer is a lot more complicated, but this is the basic reason it is called a “rock cycle”
2) No good answer to this. The recycling of rocks over billions of years has resulted in the continental crust that we humans live on, but as to how it is related to human recycling… You’re on your own.
3) Water can provide mechanical weathering by causing rocks to beat against one another turning big rocks into sand and silt. Rain water is slightly acidic which breaks down rocks …especially marble and limestone.
4) That would be chemical. Gravestones are frequently made of marble and marble is etched by rain
5) A lot…Development along water ways increase the amount of water in rivers making erosion faster. Burning Coal adds sulfur and CO2 to the atmosphere which further acidifies the atmosphere increasing chemical weathering. (just a couple)
Daniel asks…
What fish should I put in my 10 gallon tank.?
I just moved the fish from the 10 gallon to the 29 gallon that I just did a successful fishless cycle on in only 12 days. Now I want to put something in the 10 so that it does not have to be recycled later and so I don’t have to deal with dosing it with ammonia everyday as that stuff just stinks. Any advice would be great. I am going for cheap but colourful and tropical without overloading the bio.
The Expert answers:
I would stick with one school of a single species. Danios and Neot tetra’s are good fish to go with. The danios will proabaly be hardier than the neons.
James asks…
What happens to a plane (737) when it is retired?
For example a 737 reaches its end of life cycle, (meaning it can no longer pass a stress test with safe results) are planes generally scrapped, or are the recycled or even rebuilt? How much of a plane is actually considered waste at the end of a lifecycle, and how much is used for rebuilds? Are the frames used in rebuilds?
The Expert answers:
It’s broken up for scrap. Some parts might be saved.
Carol asks…
Rock Cycles!!!! PLEASE HELPPPPP?
Some geologists describe the rock cycle as “nature’s recycling system”. What do you think they mean by this?
The Expert answers:
Because the rock cycle is a process where weathered rocks break down into smaller rocks then compacted down into earth until it is later shot out of a volcano where it then cools and solidified … This can be compared to taking used newspaper, cutting it up into small pieces, and then screening them into paper to reuse them.
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Rock Types
1.There are three basic types of rocks found in the rock cycle. The first one is sedimentary. This type can be broken down into two categories: detrital and chemical. The difference is that detrital is formed by organic debris, whereas chemical rocks are formed by water-depositing minerals getting into the rock to crystalize it.
The next type of rock is igneous rock. These rocks are formed by molten rock that has cooled down and crystalized, either below or at the Earth’s surface.
Metamorphic rock is formed when extreme heat and pressure come together (usually in magma) to alter a rock’s minerals, and it changes into something else, hence the name metamorphic.
Breaking It Down
2.There are five processes in the rock cycle: metamorphism, weathering and erosion, cementation and compaction, melting, and cooling and solidification.
Weathering and erosion typically create sedimentary rocks. Weathering is when water, air and gravity all come together to break the rocks down into smaller particles, or sediments. There are two kinds of weathering: mechanical and chemical. Mechanical occurs when things are broken down by the water, wind, and air to make detrital sedimentary rocks. Chemical weathering occurs when the chemical composition of the rock is altered by water evaporating from the rock and depositing chemical sediment. Weathering only covers the breaking down process. When water, wind, air or gravity transport the sediment, it’s known as erosion.
Over time, this erosion process layers the sediment onto itself, and gravity forces the bottom layers to be moved into the Earth. This process is called compaction. When natural glues like silica and calcite are added to the compacted rock, they are cemented together, hence the term cementation.
Building It Up
3.As the bottom layers of sedimentary rock are moved further into the Earth, they are heated and melt, where they’re later transferred out of the ground by volcanic activity. On the way out of the the Earth, they heat rock that’s buried in the Earth’s crust, transforming it into metamorphic rock. Then, it’s shot out of the volcano, where it cools and solidifies. This cooled rock is called igneous rock.
The metamorphic rock and igneous rock are weathered down and eroded, when they become sedimentary rock. They are deposited, layered and the cycle starts all over again. ”
( http://answers.yahoo.com/question/answer?qid=20101208130837AACbYs1 )
Robert asks…
Are we bothered about saving the planet?
I try and cycle to work and recycle as much as I can , what do you do if anything?
The Expert answers:
I don’t bother with it. I clean up my own messes and would like others to do the same. I’ll recycle if its economically feasible and throw stuff away if its not.
I actually don’t think its humanly possible to either destroy or save the planet.
John asks…
Does anyone know where i can find out the life cycle of an Xbox 360 controller?
okay, so i’m doing an engineering project about the life cycle of a product and i chose a 360 controller, problem is, idk where to start. i need the raw materials used, packaging, creation progress, and the recycling. pretty much the entire thing from beginning to end. HALP!
The Expert answers:
Wow guy most of us just play games.
Jenny asks…
Recycling!?
How much Money can you earn for recyling?!
The Expert answers:
Depends on what your re-cycling, how much he start up costs are and market
there probably wont be a very good market for used diapers for instance but recycling motor oil or converting used cooking oils into fuel have a good market but start up costs run into millions and still require a gov subsidy at present. If you mean collecting used soda cans and such, there are a lot of homeless people (and others) doing that and make reasonable money from it, depending on how far you are from a collection centre
Sandra asks…
Why are plants so important in the recycling cycle?
This is for my science revision sheet due in tomorrow and I really need it since I need to revise for my test! Please help! Thanks!:)
The Expert answers:
Animals take nutrients and oxygen and use these to extract the energy the animal needs to live and move.
Plants take the waste products from animals (including carbon dioxide) and absorb energy from sunlight to reverse the process and produce animal nutrients and oxygen.
The energy the animal uses is derived indirectly from the sun in a constant recycling of their waste through plants to provide more fuel for the animal.
Thomas asks…
Compare rock cycle to recycling?
I need to write a paragraph on this for homework and I don’t know where to start. I searched it but I ended up blank . Thanks!
The Expert answers:
The rock cycle is a fundamental concept in geology that describes the dynamic transitions through geologic time among the three main rock types: sedimentary, metamorphic, and igneous. Each type of rock is altered or destroyed when it is forced out of its equilibrium conditions. An igneous rock such as basalt may break down and dissolve when exposed to the atmosphere, or melt as it is subducted under a continent. Due to the driving forces of the rock cycle, plate tectonics and the water cycle, rocks do not remain in equilibrium and are forced to change as they encounter new environments. The rock cycle is an illustration that explains how the 3 rock types are related to each other and how processes change from one type to another over time.
Recycling involves processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution (from incineration) and water pollution (from landfilling) by reducing the need for “conventional” waste disposal, and lower greenhouse gas emissions as compared to virgin production.[1][2] Recycling is a key component of modern waste management and is the third component of the “Reduce, Reuse, Recycle” waste hierarchy.
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