B+nuclear+subs

=__Isotope and Radioactivity__= = = =Name of radioactive isotope/electromagnetic radiation/scientist:= = NUCLEAR SUBMARINE = = = = = =Explanation of interesting facts: (how used/works.experiments/discoveries)= =**3 Advantages of using the radioactive isotope/radiation/benefits of discovery**=
 * 1) Nuclear submarines use nuclear reactors, steam turbines and reduction gearing to drive the main propeller shaft, which provides the forward and reverse thrust in the water
 * 2) Nuclear subs that are powered by nuclear reactors that are nearly identical to the reactors used in commercial power plants.
 * 3) In a nuclear-powered submarine, reactor heat produces steam to drive the turbines that provide the submarine's power.
 * 4) Nuclear submarines were first used during the cold war
 * 5) Nuclear reactors are defueled in specially designated ports. Spent radioactive fuel is removed from the reactor casing, thereby removing most of its radioactivity.

1. Nuclear generators need no oxygen, so a nuclear sub can stay underwater for weeks at a time.

2. Never need to be refueled throughout their 25-year lifespans.

3. Does not need to surface to charge it's batteries

=3 Disadvantages of using the radioactive isotope/radiation/discovery:= 1. The fission process produces radiation

2. The cost can range from 2 billion to 2.5 billion

3. If a reactor is damaged in action or during naval operations, it can contaminate vast areas of the ocean.

=Is the radioactive isotope/radiation/discovery still used today? Explain= Yes. They are used to patrol areas of water, to track other ships/subs and to destroy other ships and subs.

=References= Add your useful link to the resource page as well as this template http://outthere.whatitcosts.com/nuclear-submarine.htm http://en.wikipedia.org/wiki/Nuclear_submarine http://www.howstuffworks.com/submarine.htm

=Diagram/image (include source and caption)=

http://visual.merriam-webster.com/society/weapons/nuclear-submarine/nuclear-submarine_2.php

http://www.cameco.com/uranium_101/uranium_science/nuclear_reactors/