What is a good way to make bottle rockets out of homemade materials?
450016
Hi\nYou can just use a simple plastic water,drink or juice bottle.\n\nIMPORTANT NOTE:your rocket may not work if you use a screw lid.\n\nTo make rocket:\n1 Tape a straw to the side of the bottle:make sure that one end of the straw is within 1-2cm of the top of your bottle\n\nTo make launch pad:\n1 Insert skewer into a round piece of cardboard so that the skewer is standing securely upright.\n\nTo launch rocket:\n1 Insert one of the following fuels:\n   1x crushed alka-selzer tablet and 15ml of water \n   1 teaspoon of baking soda and 40mL of vinegar.\n2 Then put on the lid on as soon as the substance(s) are in the rocket.\n3 Place rocket on launch pad so that the skewer goes through the straw.\n4 watch in amazement as your rocket takes off!
356607
check out www.bottles.com
385728
mix potassium chloride with chlorine \n\nlol chemical weapons
186149
Spears, boomerangs, fire.\n\nGoogle "how to make a boomerang"
137156
Well it depends on how old they are. I would get a big ball of plasticine. I would make it big and round, and then show them how it started out spinning. Then as it spun, it spread out like a plate. Take a lump and roll it for the sun, and smash the rest flat so it is a big flat plate. Cut out a hole in the middle and place the sun in it. Then get a knife an cut it into annuli, and then roll those annuli into balls, and place them at different distances from the "sun" ball. There, you have made yourself a big spinning solar system with a sun and planets. \n\nAnd you have had fun rolling the plasticine into balls and smashing it and cutting it etc.
577077
Chemical reactions are fun how about a baking soda volcano?\nor you can make an experiment showing air pressure and oxygen use, use a big clear jar( mayo peanut butter) a pie plate a bit of modeling clay a candle and some colored water and some pennies.\nplace the clay  in the center of the pie plate\nplace the pennies 2 or 3 high( you may wish to tape them, make 3 or 4 sets set them around the clay so they will support the jar up from the bottom of the pie plate\nplace a birthday candle into the clay  fill the pie plate with enough colored water to cover the edge of the jar and a little more when it is upside down on the pennies\nnow remove the jar, light the candle and replace the jar over it.\nThe candle will go out. this shows that fire needs oxygen and uses the oxygen in the jar.\nIf your jar is not too big you will see the water rise up into the jar. The gas in the jar has changed, it does not have the same pressure it did before the oxygen was removed. The pressure from the outside air makes the water rise. This demonstrates air pressure. Have the teacher light the candle. try it at home a few times you may have to change jar or glass size to get a good effect.\nI do not recommend the electric pickle experiment.
660694
Here's one way.  I built something like this when I was 11.\n\nI dont need to say the obvious about not cutting off your fingers, poking your eyes out, or gluing your hands to the table do I?\n\nie I'm assuming you're capable of doing the below safely.\n\nyou need:\n\n2 big wheels\n1 smaller wheel (you can always make wheels from cardboard and balsa)\nThe biggest propeller thats fits.\nelectric motor\nlantern battery (big square thing with springs on the top)\nSome 1/8" thick balsa sheet.\nsome dowel which fits in the wheel.\nwire\nA wide necked plastic drinks bottle - Sunny D maybe?\nsticky tape \nhot melt glue \nlong drawing pins/nails\n2 x 10-20 ml syringes and a length of narrow bore plastic tube.  (doctors surgery might give you two syringes if you ask nicely an the tube is used on fish tanks)\n\n\nThe plastic drinks bottle is going to be the chassis for your car.\n\nyou need to cut the following holes in it\n\n- small hole in the lid \n\n- Big hole in the side just smaller than the tennis ball\n\n- Small hole for the wires from the motor\n\n- small rectangle opposite the big hole, near the bottom of  the bottle, same width and length as the small wheel.\n\n- 2 small holes the same diameter as the dowel further up\n\n\nHot melt the motor to the inside of the lid with the shaft sticking through the hole.\n\nSecure the propellor to the front of it. \n\ncut two long lengths of wire.  Strip the ends and twist one wire around each of the terminals on the motor.\n\nFit the cap, motor & propellor wires.  push the motor wires though the bottle.\n\nPut a short length of dowel through the small wheel and then hot melt it inside the plastic bottle so the wheel sticks down through the hole you made.\n\nStick a long piece of Dowel through the two small holes at the front.  And pin the wheels on the axles.  All the Wheels rotate freely.\n\nHot melt  another piece of dowel to the bottom of the bottle so that it sticks up vertically.\n\nMake a rudder out of the 1/8" balsa. say 6" high and 3" deep.  Near the bottom stick a 1/2" long piece of dowel so that pokes out at 90°.\n\nTape the balsa to the vertical dowel along one side only so that it will hinge.\n\nHot melt a syringe to the top of the bottle so that the plunger is facing the rudder.  Attach a piece of dowel to the syringe plunger and then to the short bit of dowel sticking out of the rudder.  the rudder end needs to be able to move  ie pinned together.\n\nConnect the syringe to the plastic tube.\n\nWrap the wire from the motor and the tube together with tape to make an umbilical cord. \n\nconnect the other end of the tube to the syringe\n\nConnecting the battery up will give you forwards and reverse and pushing the syringe in and out will give you steering.\n\nThe tennis ball will just sit in the hole on top.
1136054
Volcano is the classic answer.  Make a volcano out of clay and add some baking soda, vinegar, and red food coloring for the eruption.  You could use styrofoam balls from walmart or a craft store along with doll rods or straws to make a model of the solar system or an atom.  The links below are to some websites that have samples of some projects you could do.  If you tell me a little more specifically what kind of project you want, I could help more.
701653
get 2 ) 2 liter soda bottles\nfill on with water.\ntape the empiy one to the full one ( opening to opening)\nturn them upside down and you have instant tornado in a bottle\nif that doesnt work shoot the bottles out at 200 mph that would be fun too
805418
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/
907704
First I want to say YEAH RIGHT! Like you are just curious and not wanting to make something for yourself to use . Haha!\nI don't know of any sites but I know you can use a soda can. My friends and I made a water bong from one of those tall amusment park cups back in the day. \nGood luck =)
918098
plastic pvc plastic with thousands of little rubber bands wrapped around a little ball with water in it thats the core . throw one in the fire and stand back. its pretty cool
403623
One of my favorites was making a tornado in a 2 L soda bottle.\n\nWhat you do is take a bottle and pour it almost full of water. Get some grass and some small toys, like cars to put in there. I like to use the monopoly houses to. Then put a small drop of soap in then swirl the top a the bottle around really fast. There ya go a tornado. Then give a one or two paragraph summery on how a tornado is formed.
1026333
Here's a clever way to make an artificial volcano. \n\nMaterials:\n1.flour 2. water 3.food colorings-red and yellow 3. a small plate 3.baking powder 4.vinegar 5.pencil \n\nExperiment:\nFirst mix the plain flour in a little flour,make it into a dough then make it in he shape of a small mountain and keep it on the small plate then make a hole by inserting the pencil into the top center of the mountain and allow it to dry ,after it dries remove the pencil. You will see that it is like a mountain with a volcano hole. Put baking powder into the hole along with the red and yellow food colorings and then gently pour a little vinegar you will soon see that vinegar and baking powder react eject out from the hole and that is along with the color which looks like the volcano erupting from the mountain. \n\nData and Observations:\nWhen an acid reacts with a base effervescence is formed and a salt is formed.
61279
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.
485319
A classic, but great visual experiment is sucking a hard boiled egg into an erlenmyer flask. It is done by using the principles of the kinetic theory of matter.\nAnother cool project might be doing something with dry ice. Find a place that you can get dry ice and do fun stuff with it, like create smoke, put bubble solution in water and then drop in dry ice to make bubbles that, when you pop, let out white smoke.\n\nAnother idea might be to do some cool colorful reactions. Make some dye molecules or something.\n\nHope one of these ideas works for you.
1033222
Send up a few bottle rockets\nParty on, Garth!