Miscellaneous
Half-Life
Alpha, Beta Gamma
Fission/Fusion
Radiation
100
Define radiation
Energy that is spontaneously released from or given off by an object when particle/wave emitted
100
Thorium-234 has a half-life of 24 days. You have a 100 g sample. How much is left after 48 days?
What is 25 grams
100
Radioactive particle with a charge of -1
beta
100
Both fission and fusion reactions release large amounts of this
What is energy?
100
Cesium-137 undergoes beta decay to form this.
What is barium-137?
200
Part of the atom involved in a nuclear reaction.
nucleus
200
Plutonium-239 has a half life of 24,100 years. How much of 100 g remains after 96,400 years?
What is 6.25 grams?
200
Rank the radioactive decay in order from most dangerous to least dangerous
gamma > beta > alpha
200
Put in order from least energy to most energy released: fusion, chemical reaction, fission
What is chemical reaction, fission, fusion?
200
Francium (Fr)-208 undergoes alpha decay to form this
What is Astatine (At)-204?
300
the type of radiation that has no effect on the nucleus
What is gamma radiation?
300
Radium-266 has a half life of 1600 years. How old is a sample that has gone through 3 half-lives?
4800 years
300
Least penetrating form of radiation
What is an alpha particle?
300
Why isn't fusion used in power plants?
We can't harness enough energy to get the reaction started. (We need too high of temperatures)
300
Sodium-24 undergoes beta decay to form this.
What is magnesium-24?
400
The half life of this substance?
What is 6 hours?
400
You start with 60 atoms and now 7.5 atoms are present. If a half-life for this sample is 8 days, how many days have passed?
24 days
400
What type of radiation has a mass and charge of 0?
gamma ray
400
A
B 
Identify
A: Fission
B: Fusion
400
What isotope is used to date things 60,000 years old or younger?
Carbon-14
500
Inside a nuclear reactor, this action destabilizes Uranium and causes it to split, which triggers a nuclear chain reaction (hint: PHET)
what is firing neutrons?
500
The definition of half life
What is the average time it takes for half the amount of a radioactive element to decay?
500
Used for shielding from alpha, beta, and gamma radiation
alpha: skin
beta: foil
gamma: lead
500
The differences between fission and fusion by definition
Fission is the splitting of an atom; fusion is combining of two atoms.
500
The reason an atom releases radiation
The atom is unstable and wants to become stable.