how do you go about making a homemade geyser?
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put a mentos in a bottle of soda. wooosh!
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distill\n\nboil liquid, and cool the steam.
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“Making your own Crystals”\n\nA crystal is a special kind of rock. Different crystals have different beautiful shapes and colors. \n\nWhat you'll need\n\n Your magnifying glass \n Table salt \n Epsom salt \n Honey jar \n Measuring cups and spoons \n Paper cut into circles \n Scissors \n Pencil \n String \n 1 3/4 cups of sugar \n 2 or 3 paper clips \n A glass jar or drinking glass \n Your science journal\n\nWhat to do\n\n \n\n1. Use your magnifying glass to look for crystals. Inspect: \n1. The table salt and Epsom salt; \n\nThe honey jar (particularly if it has been open for awhile) and \n\nThe walls of the freezer (if it's not the frost-free kind). \n\n1. Draw pictures of what you see in your science journal. \n1. Do all of the crystals look the same? \n1. If not, how are they different? \n1. Try dissolving salt crystals and forming new ones: \n1. Dissolve 1 teaspoon of salt in 1 cup of water\n1. Grown-up alert! \n\nHeat the mixture over a low flame to evaporate the water. \n\nWhat's left? \n\nWhat shape are these crystals? \n\n1. Snowflakes are made of ice crystals and are beautiful, but they are hard to see clearly. You can make paper snowflakes. \n1. Take a circle of paper (use thin paper) and fold it in half. Then fan fold it. \nMake cuts along all the edges. Unfold them. \n1. Grow rock candy crystals from dissolved sugar. \n\nGrown-up alert! \n\nPour a cup of boiling water into a dish and add 1 3/4 cups of sugar. Stir until the sugar is completely dissolved. Prepare a jar or glass as shown. \n\n\n\nWash the paper clips and use clean string. When the sugar water is cool, pour it into the jar and put it where no one will move it. Hang the paperclips in the water and put the pencil on top of the jar. \n\nSome crystals may form in a few hours. Some may grow to be half an inch on each side. To save them, take them out of the water and keep them dry. But they may disappear--they are good to eat. \n\nWhen certain liquids and gases cool and lose water, crystals are formed. Crystals are made up of molecules that fit neatly together in an orderly package. All crystals of the same material have the same shape, regardless of the size.
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Use the fire to heat water in a container to boiling. Pipe it to a steam driven compressor to compress refrigerent to cool the ice chest. Don't forget the condenser, evaporator and expansion valve.
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Use chicken wire to make a volcano like thing, then cover it with plaster. paint it and add trees and stuff like that. then mix vinegar, red dye and baking soda together to make the lava.
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get no flavor gelatin and follow the instructions to make it\nwhen stirring the liquid part pour in some red food coloring. Cool and serve. enjoy
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Put water under a vacuum. It will boil at room temperature. \n\nOr do you just want to create the illusion of steam? You could put dry ice in water. Then it will be could and appear to be steaming and boiling. And many people will think it is steaming.
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You can make your own saline solution very cheaply because the main ingredients are just water and salt. Here's how to do it along with a couple of other tips on reducing costs:\n\nBuy some distilled (or de-ionised, or de-mineralised) water. You should be able to find it with the laundry supplies in your supermarket (it's used for steam irons), in a hardware store, or an auto store (for topping up car batteries). I suggest buying at least a litre or a quart, and preferably twice this much. It's cheap stuff: around 2-3 dollars for 2 litres (half-gallon) here in Australia.\n The other supply you need is salt. In the absence of laboratory grade sodium chloride, I recommend cooking salt because table salt seems to have silica-type minerals added to make it free-flowing. Silica is exactly the sort of insoluble gritty stuff you don't want in your solution. The cooking salt should probably be plain rather than iodised (though I've used the latter myself), as I can't say what long-term effects, if any, the trace amounts of iodine might have.\n If you can find a clean, sterile container that holds a litre or a quart, this will be handy too. You could use a well-cleaned plastic soft-drink bottle. Rinse it well with water that has been well boiled, then give it a small final rinse or two with some fresh distilled water. To really give your containers a thorough sterilisation, you could use a solution made with sterilising powder from home brew or winery supply shops. However, you'd have to use a fair bit of distilled water to rinse it out completely. Several small rinses are generally much more effective than one large rinse.\n Now comes the only hard part: approximating the correct amount of salt. You are aiming for 8 grams per litre to make "normal saline" as it's called. If you have access to laboratory or jeweller's scales you'll be laughing. You can buy electronic jewellers scales fairly cheaply on eBay these days. Otherwise, use a teaspoon measure of the kind that is used for cooking. Make sure it's clean and sterile (boiling water is a good steriliser). A teaspoon holds about 5 mls, so allowing for the density of salt, I find that a very slightly heaped teaspoon is perfect for a litre of water. A quart is close enough to a litre that you don't have to worry if that's what you have - just make sure it's a very full quart.\n As you can see, this is all very rough and approximate but I've found that it doesn't matter. You don't need precision and your eyes won't feel the difference. It's better to err on the side of a weaker solution if anything, because too much salt will make your eyes sting slightly whereas too little will just produce a vaguely uncomfortable suction until the osmotic pressures equalise. You probably know the feeling if you've ever had distilled or tap water in your eyes. If you find that you've made a solution that's too strong, add more water (which is why it's nice to have some spare).\n Keep the solution in a dark place and/or a dark bottle so that algae doesn't grow in it. Keep the lid tight. I suggest refilling smaller squirt-bottles and using these on a day-to-day basis. You can often prise the cap off a commercial saline or disinfecting solution bottle and reuse it repeatedly as long as you maintain its sterility. Keep the caps and bottle tops away from surfaces if possible. Open the bottles only briefly.\nDon't use home-made saline if you're disinfecting your lenses with heat. Commercial salines are pH-buffered. If you cook your lenses in a slightly acidic solution repeatedly, it will probably damage them (I did this a long time ago when heat disinfection was popular). Remember also that this home-made solution is not actively sterilised. Take care when preparing it, and you should find that it's fine for rinsing, enzyme cleaning, and so on, but not for your daily sterilisation. You will s
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If it's just a school project, you might try pumping it or simply use a bucket. It depends on how large your model and pocket are.\nIn actual aqueducts, the water is already at a higher level (like a mountain spring or lake) so I think it would be fair to replicate that situation.
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welld oint this can be tricky without proper sterile procedure... however it is not impossible...\n\n\nget a sleeve of plastic or glass petri dishes\n\nmix up a mixture of Malt Extract And Agar... and put it in a sealable vessle that can be pressure cooked or boiled at a high temperature...\n\nIn a clean environment after boiling or pressure cooking for about 15-25 minutes, \n\ntake the vessle and pour your agar plates...\n\ntake the dishes and let them cool in a very clean environment\n\nonce cool....\n\ntake a qtip and swab the inside of your mouth really well\n\nopen each plate and swab the surface with the qtip\n\nrepeat for each plate\n\nincubate the plates at room temperature for about 3 days or so\n\nyou should see some growth\n\nor you can do it this way\n\nhttp://www.science-projects.com/NAplates.htm\n\nwww . Science-Projects . com \n\n\n\n\n--------------------------------------------------------------------------------\n\nMaking Nutrient Agar ("NA") Plates\n \n| Site's Table of Contents | Site's Index |\n\n\n--------------------------------------------------------------------------------\n\nThere are several ways to make NA plates, all depending on what you have to start with. The well equipped person has clean and sterile empty petri plates, and a bottle of NA powder sitting on the shelf. That person needs only to follow the directions on the bottle. As it is the purpose of this website to assist those who, being mostly young students, have neither NA powder nor even petri plates. What are they to do? Here's what! \n\nPETRI PLATES FROM SCRATCH\n(click this to find ready-made plates) \n\nFirst, you must find something that simulates a petri plate. Rather shallow glass custard cups covered by a double thickness of aluminum foil works well. \n\nSecond, you must have the nutrient agar to put in them. What might you use as a alternative to the commercially available microbiological stuff? The answer is canned beef or chicken broth (supermarket) and agar (health foods store; sometimes called "agar agar"). \n\nThird, you must sterilize these things in appropriate combinations. Included in the following steps will be the way to use a pressure cooker. There is NO substitute for a pressure cooker or autoclave, which is an automated pressure cooker. Boiling is not a sterilizing condition. Boiling doesn't work! The only commonly employed sterilizing conditions are wet heat at 120°c (250°F) for 20 minutes (pressure cooker), or dry heat in excess of 190°c (375°F) or more for an hour or more (oven). \n\n\nMeasure and record the amount of water that half-fills a custard cup. \nDetermine the number of plates (custard cups) you will need to use, and from that the amount of medium you need to make to half-fill all the cups. \nEmpty a can of fatfree beef or chicken broth into a large measuring cup and dilute, if necessary, with water as per the instructions on the side of the can. Mix. Discard the excess beyond what you need for your cups. Pour this into a sauce pan. \nAdd 1 level teaspoon of agar per 2/3 cup of broth. Stir the required amount of agar into the COLD broth in the sauce pan. \nTurn on the heat, and with constant and continuous stirring and/or swirling bring just to a boil. Keep swirling, and then adding small amounts of heat, and do this until all the granules of agar are dissolved. Agar solutions burn very easily - just like making gravy (in which you have added another polysaccharide as a thickening agent). An alternative way to do it is to place the broth/agar mix into a glass bowl and place it in a microwave oven. But do this cautiously as the mix will suddenly foam up. So be ready to shut off the energy at any moment. Give the dissolving solution a swirl, and microwave a bit longer. Swirl and energize repeatedly until all the granules are dissolved.§ \nDistribute the hot medium among the cups you need. \nPlate pieces of double-thick aluminum foil over the cups so that at leas
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Here's a site with alot of different ideas and difficulty levels with instructions.  Maybe you can find something here.\n\nOr you can tell us more about what you are wanting to do and what you like and we might be more helpful on here.\n\nhttp://www.all-science-fair-projects.com/
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I would use a length of nichrome wire (see links below) stretched between a couple copper blocks. You could make some sort of pinch block out of the copper and connect a power supply to the copper. (or drill a hole through it with a set screw, tap a hole and us a pan head screw)  You will have to insulate the copper from the rest of the world so you don't short something out.  G-10 (a glass/epoxy resin) makes a good moderately high temperature insulator.  One of the contacts should be fixed and the other allowed to "float" and allow for changes in the length of the wire due to heating.  A spring could be used to provide tension or an air cylinder.  The power supply will depend on the length and diameter wire you choose.  If there is a problem with the electrical contacts heating up, you could run some cooling water through them.  Just drill a hole through it and 1/8 NPT pipe tape both ends.  You can plumb some water to it and it will keep the copper chilled.
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How to make a simple Van de Graaff Generator\n\nITEMS:\nPlastic Tupperware (microwave oven safe)\nSome wires\nNail\nSmall DC motor \nPiece of PVC pipe (approx. 3.8 cm in diameter)\nBroad rubber band \nWooden skewer\nPlastic bag\nRoll of tape\nSoft drink can\nMineral water bottle\n2 3volt batteries\nBattery holder (optional)\n\nPutting it together:\n1) Cut a hole in the middle of the bottom of the plastic container.\n2) Glue/tape the motor to the lid, making sure the shaft is at the centre of the lid.\n3) Using a hot nail (can be heated at the stove), make two holes near each other for the wires of the motor\n4) Thread the wires through the two holes (the two wires will connect to the batteries)\n5) Cover the container with the lid. (Inverted container in this case)\n6)Make another hole, perpendicular the motor shaft\n7) Thread another wire through(this will be your ground wire) \n8) Make the appropriate measurements for cutting your PVC pipe length and grooves(where the stick will rest)\n9) To make the roller, just stick tape to your stick and go round and round and round.\n10) Place the PCV tube on the lid, perpendicular to the motor. \n11) Thread the stick thru the rubber band and place it in the grooves.\n12) Make sure both rollers are parallel to each other when you thread the bottom of the band to the other "roller"\n13) Cut the top of the soft drink can.\n14) Cut both ends of the mineral water bottle off, making sure that it isn’t shorter than the PVC pipe.\n15) Make a hole near the top of the bottle.\n16) Strip some wire, twist it, and poke it through the hole.\n17) Electrically connect the copper wire to the soft drink can.\n18) Tape everything in place.\n\nWhen you put everything together, you get a crude Van de Graaff generator. Make sure the combs (end of wires) are near the belt and rollers. Make sure that when you run it, the belt doesn't slip off. If it does, make sure both rollers are parallel to each other. Also, try to superglue the motor to the Tupperware lid.\n\nWhen you first run it try taping strips of tissue paper to the can. It should start to rise seconds after the batteries are connected. If this fails, put your finger near one of the tissue strips. The strip should be attracted to your finger.\n\nPlaces with high humidity can be a real problem for electrostatic experiments. Try working in an air conditioned room to help overcome the problem.\n\nThe last two links are the best ones and both include detailed step by step process with pictures.
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buy tea bags.\n\nBoil the water.\n\nPut your tea bag into a coffee mug\n\nPoor the boiling hot water on top\n\nLeave in and stir for a minute.  \n\nTake out at desired color. \n\nDrink.  Enjoy.
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Get a bottle cap. Put candle wax in it. Burn the bottom of the cap until wax melts. Wax will start to set on fire after while.\n\nPut a drop of water on it.\n\nBurn yourself.
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1. Get a common heavy pliers.\n\n2. Get a common three- or four-tined eating fork.\n\n3. Use the pliers to bend the inner tine(2) back at the base to a 90-degree angle, so that only the outer two tines are facing out.\n\n4. Fill a Dutch oven withabout three inches of water.\n\n5. Wet a standard bath towel.\n\n6. Proceed to the nearest operational electrical outlet providing at least 10 amps of 120 volt, single-phase alternating current.\n\n7. Place the wet towel on the floor near the outlet.\n\n8. Place the water-filled Dutch oven on top of the towel.\n\n9. Remove your shoes and stand in the Dutch oven, ensuring your feet are covered with water. \n\n10. Insert the fork in the outlet, making contact with the home wiring.\n\n11. Die, and spare the world another person so dumb, he asks on Yahoo! Answers how to violate the Yahoo! Terms of Service and invade other Yahoo! users' privacy.
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It depends on what superconductor do you want to make. For example, let me give you a brief idea about making the most common 'High-Tc Superconductor' YBCO:\n\nRecipe for a homemade superconductor \n1.825g or 0.005M  Y(NO3)3.5H2O \n2.614g or 0.010M  Ba(NO3)2 \n3.624g or 0.015M  Cu(NO3)2.3H2O \n\nWeigh out the ingredients and grind together thoroughly in a mortar. Transfer the mixture to an alumina crucible and place in the centre of a tube furnace. Pass a slow flow of oxygen over the mixture and bake at 350°C for 1 hour. Then increase the temperature to 950°C and cook for a further 3 to 4 hours.  \nAllow the furnace to cool somehwhat before removing the crucible with tongs and gloves. Let the crucible cool on a fire-brick before emptying the contents into the mortar. Re-grind thoroughly.  \nThen press two 13mm pellets from the mixture (at 12 tons pressure). Place them in a crucible lined with platinum foil. An unlined crucible won't do since it would contaminate the pellet. Re-heat the crucible in the furnace to 950°C with a slow flow of oxygen. Programme the furnace to cool the sample at 50°C/hour through the tetragonal-orthorhombic phase transition (at 690°C). Ensure an appropriate sign for an overnight reaction is displayed on your furnace and do remember to ask a Senior Demonstrator first! Switch off the tube furnace, allow to cool a little and then remove your sample as before. \n\nJust a note at the end: You can't say Superconductors are 'conductors' with no resistance! In fact, superconductors are materials which essentially show the following two properties:\n1. zero electrical resistance, and\n2. expulsion of magnetic field.