In Science, how do you separate sand and gravel?
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Try sieving it - the sand will pass through the gravel will stay behind.
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Quartz & Feldspar make up most of the abiogenic sands (eroded from rocks).\n\nActually silica (silicon dioxide) & quartz are the same thing.\n\nThe other is feldspar which usually breaks down into clay depending upon the right surface conditions (wet/humid).
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1. Yes and no.  Sand comes from rocks.  Metamophic rocks are shaped by extreme pressure which is responsible for some of the patterns you might see in rocks.  \n2. Yes.
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Put the stones in a container partly filled with water. Mark the before and after levels. Then measure the volume of the amount of water it takes to fill up from the low line to the high mark. This
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There are billions upon billions or trillions of grains of sand on a beach.It would be "normally"\nImpossible to calculate exactly the amount of\ngrains of sand on the east coast.I suppose If you\nwanted to spend years figuring out.First you would\nhave to know the depth (length)and of course the\nwidth(miles of beach)I suppose you can make a general estimation.If you wanted to literly count a \ncup or more of grains of sand with a high powered\nmagnifier.Then if you knew the depth of sand an the \nlength ,you could possibly calculate off of one cup\nof sand and multiply it to that.But then when a wave comes by .It istantly erodes or adds to the beach shore.Therefore your study may be in vain.(lol)\nand thus you would have to determine that
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sand is made up of a chemical compound called Silica (SiO2).
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C. Silicon (sand) and oxygen (think of all of the air and water(h2o)
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shape it into a brick divide its mass by its volume
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An irregular solid is like a stone, where you can not measure the sides. To get the volume of an irregular solid you can use water displacement.
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taking the hard minerals out of the water and making it cleaner
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take your soil sample and suspend some in a little sterile water; plate out the suspension on agar plates in the usual way and isolate the colonies as a way to do a preliminary sort. Then maybe culture them ... Then do your in-depth analysis.
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sand is small pieces of rock that has been eroded away from a larger stone.it would take years to get a few pounds of sand from a 25 pound rock but wind rain and snow will break down the rock to produce sand. soil is dirt formed from leaves and twigs from trees. all this will decay and produce soil along with rain and other dying vegetation.go into a densely wooded area and you will find soil.be sure its a hardwood forest.that means maples oaks and other varieties of trees but not conifers, conifers are of the pine family and fir all evergreens.the foilage dropped this fall will take about 2 1/2 to 3 years to decay enough to be soil which is the best for growing flowers and bulbs
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I agree with James again.\n\nThey help break bedrock apart in a process called mechanical weathering.\n\nTrees can also act to prevent erosion by providing wind breaks & a canopy in which to slow down the velocity of raindrops before they hit the ground.\n\nThe difference between the two is that weathering helps to create soil while erosion is the washing away of soil.\n\n:)
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liquids and gases only.\nparticles must be able to move around to form convection currents and solid particles are not free to move about.
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Silica sand.\n\nhttp://www.publicbookshelf.com/public_html/The_Household_Cyclopedia_of_General_Information/howtomak_cge.html
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Sand is mostly silicon and can be made into glass.\n\nAbuses?  Well, I suppose you could kick sand in somebody's face.
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There are sevaral ways of finding microfossils. \n\nIf the sample is a limestone or similar material it can be dropped in acid and left for a few weeks. That will dissolve the limestone and leave the fossils. Then some lab monkey will spend weeks looking at the grit that is left under a dissecting microscope amicroscope with a pair of tweezers. I kid you not. Slowly separating out fossils from garbage.\n\nThe other way to process rock is to slice it cleanly and put the entire spcimen under the micorscope. When a fossil is spotted it can be either maked for later chemical extraction or very gently chipped out.\n\nThe other technique is to collect sediments such as clay or sand and seive them to remove unwanted material. The it's back to the dissection microcope with the tweezers to sort out the rubbish.