Question | Answer |
what has the most penetrating power | gamma rays |
what has the least penetrating power | alpha particles |
what is a half life | the amount of time it takes for half of a radioactive substance to decay |
what hapens in beta decay | neutrons breakdown into positrons and elctrons |
name one use of nuclear engery. | nuclear medcine to treat cancer |
what are one of the dangers of nuclear energy | radiation sickess |
who discovered nuclear energy | henri Becquerel |
what is nuclear fission | process in which a large nucleus splits into two smaller nuclei and releases neutrons |
example of a controlled nuclear chain reaction | nuclear reactor |
example of an uncontrolled nuclear chain reaction | nuclear bomb |
what are some advantages of nuclear fission | less polution and enegery production money is less |
what are sone disadvantages of nuclear fission | accidents,nuclear waste and $$$ |
when is nuclear fussion possible | high temperatures and high pressure |
what notable thing is powered by nuclear fussion | the sun |
what is nuclear fusion | when 2 small nuclei combine to form 1 big nucleus |
what some advantages of nuclear fusion | Produces less waste, less accident prone, plenty of material for fusion |
what are some disadvantages of nuclear fusion | Requires high temperatures and pressure
Uses more energy than it produces |
What is plasma | State of matter in which electrons are removed from atoms |