power plant primer
gone fission'
con-fusion
what a reaction...
potpourri
the days of our
half-life...
half-life...
100
Helps control the rate of fission in the reactor.
What are control rods?
100
When a larger nucleus splits into two or more smaller neuclei, it is called this type of reaction.
What is fission?
100
The combining of of two smaller nuclei.
What is fusion?
100
The element produced when neptunium-237 undergoes beta decay.
What is Pu-237?
100
In nuclear chemistry, nucleons refer to these.
What are protons and neutrons?
100
The percent of an unstable substance that remains after 3 half-lives.
What is 12.5%?
200
Acts as a protective barrier from radiation emitted from the pressure vessel.
What is the containment building?
200
The main uses of nuclear fission.
What are in power plants and weapons?
200
The largest element that can be made during normal nucleosynthesis in massive stars.
What is iron?
200
The daughter product of the alpha decay of Ra-224.
What is Rn-220?
200
Elements with atomic numbers greater than ________ or mass numbers greater than ______ are all radioactive.
What are 93 (atomic number) and 209 (atomic mass)?
200
The definition of half-life.
What is the time it takes for half of a radioactive sample to decay?
300
Large blades that spin when hit by pressurized steam, the rotation is what causes the generator to spin.
What is the turbine?
300
This subatomic particle is used to start a fission reaction and is also one of the products of the reaction.
What is a neutron?
300
The main reason our current nuclear reactors are unable to make fusion feasable as an energy source.
What are very high temperatures?
300
This type of nuclear energy is often ejected during other nuclear decays; especially electron capture and positron emission.
What is gamma decay?
300
A nuclear decay series finally ends with this.
What is a stable atom?
300
After 37.50 minutes, this is the mass of 47.95 grams of a radioactive isotope (half-life of 12.50 minutes) that remains.
What is 5.994 grams?
400
Pellets of uranium arranged in long steel cylinders.
What are fuel rods?
400
Reaction that creates nuetrons as a product in order to sustain itself.
What is a chain reaction?
400
The amount of nuclear waste produced in fusion reactions.
What is none?
400
This is produced by the positron emission decay of sulfur-36.
What is phosphorus-36 and gamma rays?
400
The most stable ratio of neutrons to protons in elements under atomic number 20.
What is 1:1?
400
If 128.4 mg decays to 2.006 mg in 147 years, this is the half-life of the sample.
What is 24.5 years?
500
Huge mass of coiled wire spinning in a magnetic field to create electric current.
What is a generator?
500
The minimum amount of fissionable material required to sustain a chain reaction.
What is critical mass?
500
This is released when a nucleus is formed from its constituent particles.
What is binding energy?
500
When this element undergoes beta decay, the product is nitrogen-14.
What is carbon-14?
500
This is the only radioactive decay that does not decrease the atomic number of the element.
What is beta decay?
500
It will take this many years for a sample of a radioactive substance (half-life 3550 years) to have 15/16 of the substance decay.
What is 14,200 years?
600
Heavily shielded structure containing fuel rods, control rods, and coolant.
What is the pressure vessel?
600
The missing product of the fission of the common isotope of uranium shown below:
What is Krypton-92?
600
Nuclide created by the fusion reaction below:
What is phosphorus-30?
600
Radium-226 produces these products by electron capture.
What is francium-226 and gamma?
600
The spontaneous disintegration of a nucleus into a slightly lighter and more stable nucleus, accompanied by emission of particles, electromagnetic radiation, or both, is called this.
What is radioactive decay?
600
Radon-222 has a half-life of 3.82 days. If a sample currently has a mass of 60.47 mg, this was its mass 19.1 days ago.
What is 1935 mg?