How can I make a model of a Black Hole for my science project?
464698
stick a black ball in a middle of a usless disc. color the disc yellow because the black hole is very bright!
923134
Use the pastel or whatever the kindergarden kids use.  It is like mud but comes in different colours.  The model should be a representation of the cross-section of your cell.  Use strings and other things to show different structures of the cell.  Some diagrams are drawn in 3D, and that's what your model should look like.  I wish they made us do that in university.  It would be fun.
230312
You can find many lectures on MIT OpenCourseWare, including the following course on basic general relativity: http://ocw.mit.edu/OcwWeb/Physics/8-224Exploring-Black-Holes--General-Relativity---AstrophysicsSpring2003/CourseHome/index.htm
373282
We haven't actually had a black hole close enough to experiment with, at least not that we know about--although there are theories about dryers having a black hole that eats socks, see earlier response!!--so most of the work on black holes is done with theory, prediciting what a black hole might do, and then seeing if something out there is doing it.\n\nNow, the best data seems to be based on the orbital velocities of stars in galaxies: the velocity distributions demand a truly massive central mass in a lot of the galaxies, one that is best viewed as a black hole.\n\nSome very nice data exists with observations of events predicted to happen with "near misses" with black holes--particles that get into the titanic gravity well of the black hole, but decay into two particles, one escaping the black hole.\n\nBut no one has actually seen a black hole do anything, directly..
78938
Try this link :)\nhttp://www.scienceproject.com/
465421
Thinking out of the box:\n\n  Just crumple it up into a paper ball.\n\nRough texture but easily a sphere.
964413
Some examples of measurements where scientific notation becomes useful follow.\n\nThe wavelength for violet light is 40-millionths of a centimeter 4 × 10-5cm. \nSome black holes are measured by the amount of solar masses they could contain. One black hole was measured as 10,000,000 or 1.0 × 107 solar masses. \nThe weight of an alpha particle, which is emitted in the radioactive decay of Plutonium-239, is 0.000,000,000,000,000,000,000,000,006,6 45 kilograms (6.645 × 10-27 kilograms). \nA computer hard disk could hold 4 gigabytes (about 4,000,000,000 bytes) of information. That is 4.0 × 109 bytes. \nComputer calculation speeds are often measured in nanoseconds. A nanosecond is 0.000000001 seconds, or 1.0 × 10-9 seconds.
978352
A model volcano is always a hit. Or a model of the solar system. For the latter, just string some colored balls on the interior of a shoe box painted black. Pretty simple.
17
The current scientific theory holds that black holes are formed when stars of sufficient mass (about 3x the mass of our Sun) reach the end of their life and collapse down into a singularity, which is, in essence, an infinitely small point with a huge amount of gravity - gravity so powerful that not even light can escape it's pull if it gets too close. It is also thought that black holes can be formed from smaller masses if external energy/pressure is exerted to squeeze the mass into a singularity.\nNot sure if there's any direct experimental evidence of creation, but there is evidence that they exist. Cosmologists use several different methods to detect blacks holes, such as by looking for light being bent and/or disappearing as it travels from remote stars towards us, and also by looking for bursts of x-rays that are given off as matter is sucked into the back hole and destroyed.\nFun fact: current evidence and theory suggests that the center of the Milky Way is a giant black hole that was formed as the densly packed stars in the center collapsed and sucked each other in.
136973
It is a science project
920243
Make a Simple Telescope\nYou will need the following: \ntwo magnifying glasses - perhaps 1 - 1.5 inches (2.5-3 cm) diameter (it works best if one is larger than the other) \na cardboard tube - paper towel roll or gift-wrapping paper roll (it helps if it is long) \nduct tape \nscissors \na ruler, yard stick, or tape measure \nsheet of printed paper - newspaper or magazine will do \nTo assemble your telescope, do the following: \nGet the two magnifying glasses and a sheet of printed paper. \nHold one magnifying glass (the bigger one) between you and the paper. The image of the print will look blurry. \nPlace the second magnifying glass between your eye and the first magnifying glass. \nMove the second glass forward or backward until the print comes into sharp focus. You will notice that the print appears larger and upside down. \nHave a friend measure the distance between the two magnifying glasses and write the distance down. \nCut a slot in the cardboard tube near the front opening about an inch (2.5 cm) away. Do not cut all the way through the tube. The slot should be able to hold the large magnifying glass. \nCut a second slot in the tube the same distance from the first slot as your friend wrote down. This is where the second magnifying glass will go. \nPlace the two magnifying glasses in their slots (big one at front, little one at back) and tape them in with the duct tape \nLeave about 0.5 - 1 inch (1 - 2 cm) of tube behind the small magnifying glass and cut off any excess tube remaining. \nCheck to see that it works by looking at the printed page. You may have to play slightly to get the exact distances between the two glasses right so that the image comes to a focus. \nWith your telescope, you should be able to see the moon and some star clusters as well as birds, etc. \n\n+++++++++++++++++++++++\n\nMake a Simple Microscope\nYou can make a simple microscope by using magnifying glasses and paper: \nGet two magnifying glasses and a sheet of printed paper. \nHold one magnifying glass a short distance above the paper. The image of the print will look a little bit larger. \nPlace the second magnifying glass between your eye and the first magnifying glass. \nMove the second glass up or down until the print comes into sharp focus. You will notice that the print appears larger than it does in the first magnifying glass. \n\nI've included two links below for this and other info.\n\nMyst
670484
To detect a black hole itself is not possible - what you can detect is the radiation caused by matter falling into the black hole. \n\nThrowing matter into a black hole converts matter to energy (e=mc^2) very efficiently, so when you can see point sources of hard x-rays or gamma rays in the sky with no obvious physical source this can be taken to be a black hole. \n\nThe other thing we can do is model how stars age. When all their nuclear fuel is consumed they change form. A star like our sun will convert to a red giant. If the sun were about 3 (?) times as heavy (this is known as the Chandrasekhar limit) it would collapse to form a neutron star. About 10 times as heavy and the matter inside would not be able to stop collapsing and you would end up with a black hole. We can detect this in binary stars where two stars orbit each other. If one star appears to be orbiting something we can't see we can work out how heavy it is and from that decide whether its a black hole or a neutron star.
32519
A Yahoo Search for black holes turns up a bunch of useful sites:\n\nhttp://search.yahoo.com/search?p=black+holes&y=Search+the+Web&ei=UTF-8&fr=sbc-web&x=wrt\n\nThe Wikipedia article is a good start:\n\nhttp://en.wikipedia.org/wiki/Black_hole\n\nAnother really good starting place is Stephen Hawking's new book "A Briefer History of Time".  Which is an update to his previous book "A Brief History of Time"\n\nhttp://shopping.yahoo.com/search?fr=ytff1-&p=A+briefer+history+of+time&ei=UTF-8&cop=mss
636120
I had participated in a presentation competition in my college. We made a Powerpoint presentation on Einstein and his theories of relativity. We made it very simple. Go to my site (see link)\n\nhttp://www.geocities.com/sudeepjaiswal_2001/ppt.html\n\nOr directly download my presentation\n\nhttp://www.geocities.com/sudeepjaiswal_2001/ppt.zip\n\nHope it helps.
146531
This site is constructed well and has a high level of detail (up to degree level).\n\n\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
645991
ok...\n\ntry this...do a little research on Newtonian versus non-Newtonian fluids. (see link)  There are several types of fluids (this is a very important topic in Chemical Engineering, so don't be worried if you don't understand all of the mathematics on this link).\n\nSet up a web/video camera above a bowl containing one of each type of fluid in the table. Make sure you have a ruler or some other scale in view of your shot. Then take turns dropping:\n1) Large marble\n2) Small marble\n3) Pencil\n4) die (singular of dice)\n\nwhile you photograph the results.  Discuss General shape differences of the waves generated by the objects.  And discuss wavelength differences (measured using the ruler in your shot and freeze frames of the video) between the different types of fluids.  \n\nThis project will yield some cool photographs and a demonstration will act as an awesome visual aid as well.\n\nHope this is what you were looking for. If not, or if you need any additional information, feel free to contact me. Good luck.
60047
From your own hard work and effort. Noone here will do anyone's homework for them.\n\nMy suggestion - if it is a project on astronomy, quote a famous astronomer, like Percivel Lowell. If it is a project on the large nature of the universe, find a catchy quote by Einstein or Stephen Hawking. And if the project concerns the space program, you'll find wise words from any astronaut who has been up there and made awestruck comments about what it is like.