What is a good mini demonstration for an oral report on Chernobyl/nuclear reactors?
Make simple steam turbine with an Erlenmeyer flask and some tubing. The steam can turn a little pinwheel or something. Of course, you should consider using an electric burner as a heat source rather than plutonium or uranium.
How or why is Chernobyl still affected by radiation and Hiroshima isnt?
The Chernobyl disaster had about 400 times the radioactive fallout of Hiroshima and was a steam explosion (when water fails to cool the reactor core and instead gets boiled and the reactor itself "explodes"). This pushed radiation into the atmosphere and was spread by winds over a massively large area. The Chernobyl power plant was also encased in cement afterwards to lock radiative materials underground so it can't spread anymore but unfortunately it can't "fade away" either. As a result, there are leaks in the cement and Chernobyl is still very dangerous.
Plus, after the bombing of Japan people did continue to suffer terrible sicknesses and radiation poisoning for decades.
Also, the people in this Y!A know quite a bit about Chernobyl:
Not more than a few dozen meters. This was not an explosion like an atom bomb. The reactor blew up, spraying radioactive chunks and graphite on the roof of the building and the surrounding grass and parking lot.
A lot more radioactive particles and dust sprayed for many kilometers. Even farther distances were because of winds. Sweden had radiation detectors that first signaled to the world that some radioactive materials had been released.
How has the Chernobyl disaster effected the people around the nuclear reactors health?
Ranking as one of the greatest industrial accidents of all time, the Chernobyl' disaster and its impact on the course of Soviet events can scarcely be exaggerated. No one can predict what will finally be the exact number of human victims. Thirty- one lives were lost immediately. Hundreds of thousands of Ukrainians, Russians, and Belorussians had to abandon entire cities and settlements within the thirty-kilometer zone of extreme contamination. Estimates vary, but it is likely that some 3 million people, more than 2 million in Belarus' alone, are still living in contaminated areas. The city of Chernobyl' is still inhabited by almost 10,000 people. Billions of rubles have been spent, and billions more will be needed to relocate communities and decontaminate the rich farmland.
Is it possible to go to Chernobyl today or is there still a hazardous environment?
The city is called Prypiat, and yes, you can visit. The radiation levels are still higher than normal, bt not dangerously so. YOu need a permit to enter the area, but it's not hard to get. Several tourist companies run tours.
I am doing a paper on the Chernobyl Nuclear Power Plant and i need to know what the original start up cost was?
this is an interesting site, with some previously classified info
remember, the plant was build during the cold war, by a very secretive soviet union. plans were kept secret, costs were kept secret, and put into many different budgets (the USA and most modern countries like Britain, France, and Germany do this also).
here is some declassified cia stuff. nobody knows what it really cost to build.
You could talk about how the disaster helped improve safety requirements for nuclear plants or how the disaster put a halt on construction of nuclear reactors in general. It also might be interesting to look at the environmental impact from an economical sense. Argue whose fault it was? the government, plant workers, the construction workers on the project.