how can i build a composite volcano?
400791
go to  www.enchantedlearning.com\n\nand find stuff at a craft store
20175
Geologists classify volcanoes in following ways:\n\nCinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings. Cinder cones are numerous in western North America as well as throughout other volcanic terrains of the world.\n\nSome of the Earth's grandest mountains are composite volcanoes--sometimes called stratovolcanoes. They are typically steep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 feet above their bases. Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.\n\nShield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of highly fluid lava flows called basalt lava that spread widely over great distances, and then cool as thin, gently dipping sheets. Lavas also commonly erupt from vents along fractures (rift zones) that develop on the flanks of the cone. Some of the largest volcanoes in the world are shield volcanoes. In northern California and Oregon, many shield volcanoes have diameters of 3 or 4 miles and heights of 1,500 to 2,000 feet. The Hawaiian Islands are composed of linear chains of these volcanoes including Kilauea and Mauna Loa on the island of Hawaii-- two of the world's most active volcanoes.\n\nVolcanic or lava domes are formed by relatively small, bulbous masses of lava too viscous to flow any great distance; consequently, on extrusion, the lava piles over and around its vent. A dome grows largely by expansion from within. As it grows its outer surface cools and hardens, then shatters, spilling loose fragments down its sides. Some domes form craggy knobs or spines over the volcanic vent, whereas others form short, steep-sided lava flows known as "coulees." Volcanic domes commonly occur within the craters or on the flanks of large composite volcanoes. The nearly circular Novarupta Dome that formed during the 1912 eruption of Katmai Volcano, Alaska, measures 800 feet across and 200 feet high.
1043691
I couldn't find an exact number, but the source below gives an approximate number of total volcanoes, and the second source gives a breakdown by type of plate boundary.  Most of the eruptions have been for subduction, which means that a lot of volcanoes, at least the active ones, are composites.  My personal guess is that there are about 400 composites worldwide, the majority in the Ring of Fire.
824523
I found a different website that talks about all the different types of volcanos.  There  are Shield volcanoes, Strato, Rhyolite caldera, Monogenetic fields, Flood basalts and Mid-ocean ridges.  There was also some interesting volcano facts that you might be able to use at the 2nd website below.
465753
http://www.volcano.si.edu/reports/usgs/index.cfm
763846
do a erupting volcano. \nAll you need is viniger and baking soda.  Red food coloring on viniger if you want it to be red lava.
764265
Try this website:  http://volcano.und.edu/
361573
First mould a volcano with plastercine or play dough.\n\nThen fill it with bicarbonate of soda, baking powder or health salt.\n\nGet some vinegar and then mix it with reddish-orangey (Lava colour) ink or food colouring.\n\nThen pour your coloured mixture with the bicarbonate of soda, baking powder or health salt in the volcano.\n\nHey Presto! The bubbles should start to rise. \n\nWhen Bicarbonate of Soda is mixed with an acid liquid (Vinegar)it releases the gas carbon dioxide (CO2): \n\nNaHCO3     +     H+     ----->     Na+     +     H20     +     CO2\n(soda)         (acid)           (sodium)       (water)        (gas)\n\n^ Above is the word equasion. If you are good at science you might be able to understand this.\n\nI hope I helped you.
141813
A volcano is made by a solid that turns into a liquid and has the opportunity to rise through some kind of solid. It helps realism if it includes something like gas, because that is also part of a volcanic eruption.\n\nThere are several great ideas here:http://volcano.und.edu/vwdocs/volc_models/explosive.html
444024
for more details, look at http://volcano.und.nodak.edu/vwdocs/vwlessons/volcano_types/type_can.htm
128744
i would say if you aren't wanting to clinb it, use paper mache and balloons to make a wall of "rock".ill i'm bac. mix together glue and water and flour, (i think, look up a paper mache recipe) get news paper (you are gunna need alot) and cut it into 1 inch strips. blow up lots of balloons. (i would say that a good idea would be to put the balloons together with doublesided tape before you begin the next part. make it as big as the wall you want this on.)\ndip the strips of newspaper into the glue mix and begin to layer it onto the balloons. ley dry for 24+ hours. paint as desired.\n\n:D happy "climbing"!
867639
See for yourself:\n\nhttp://www.solcomhouse.com/volcano.htm\nhttp://volcano.und.edu/vwdocs/frequent_questions/group10_new.html\nhttp://www.exn.ca/volcanoes/causes.cfm\nhttp://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/where_do_volcanoes_occur.html\nhttp://library.thinkquest.org/10136/volcano/volctq.htm\nhttp://en.wikipedia.org/wiki/Volcano\n\nMore random links I keep at hand for God knows what uses.
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.
220753
I have an eight year old in third grade and she's in the process of making a volcano...she used strips of newspaper, and a flour/water mixture to make paper mache...it's messy but she had fun. \n\nIt's dried now so she'll be painting it tonight. \nAnd to make it "erupt" you throw some vinegar, baking soda, red food dye (for color), and liquid dishwashing detergent together. \n\nShe thinks it's the coolest thing. \n\nI would say for under $20 you could make an awesome volcano and board. \n\n"How to make a volcano" directions are all over the web in case you're interested.
60647
Vinegar reacts with the baking soda for the eruption to be effective. She's right.......use red food coloring. Did you already build the paper mache volcano? Have fun exploding!
542253
by following this recipe:\nhttp://hometown.aol.com/ckckside/reports/volcanoes/vol10.htm
815221
andesitic lava is blocky