Radioactive decay transmutations Half-life Nuclear power plant Measuring radiation

What is the process in which an unstable atomic nucleus emits charged particles or energy or both? What is the process in which an unstable atomic nucleus emits charged particles or energy or both? A)radioactivityA)radioactivity B)oxidationB)oxidation C)decompositionC)decomposition D)none of the aboveD)none of the above answer answer answer

A)radioactivity A)radioactivity

What type of nuclear decay releases energy but not a particle? What type of nuclear decay releases energy but not a particle? answer answer answer

Gama decay Gama decay

Which polish scientist carried out major experiments in the discovery of radioactivity? Which polish scientist carried out major experiments in the discovery of radioactivity? A)BecquerellA)Becquerell B)Pierre CurieB)Pierre Curie C)Marie curieC)Marie curie D)Antoine LavoisierD)Antoine Lavoisier answer answer answer

C)Marie Curie C)Marie Curie

If you stop this type of radiation then you are safe from all the others… If you stop this type of radiation then you are safe from all the others… answer answer answer

Gamma Gamma

What is the mass, atomic number, and charge of an alpha particle? What is the mass, atomic number, and charge of an alpha particle? answer answer answer

Atomic number= 4; Atomic number= 4; Atomic mass= 2; Atomic mass= 2; Charge= positive Charge= positive

Uranium-238 undergoes alpha decay. Therefore, uranium-238 will… Uranium-238 undergoes alpha decay. Therefore, uranium-238 will… A)remain stableA)remain stable B)change into a different element altogetherB)change into a different element altogether C)emit neutral particles and no energyC)emit neutral particles and no energy D)none of the aboveD)none of the above answer answer answer

B)change into a different element altogether B)change into a different element altogether

When radium-226 decays to form radon-222, the radium nucleus emits a (an)… When radium-226 decays to form radon-222, the radium nucleus emits a (an)… A)alpha particleA)alpha particle B)beta particleB)beta particle C)gamma rayC)gamma ray D)electronD)electron answer answer answer

A)alpha particle A)alpha particle

The atomic number = ? The atomic number = ? answer answer answer

# of protons # of protons

Which of the following takes more energy to carry out: Which of the following takes more energy to carry out: A)fissionA)fission B)fusionB)fusion c)alpha decayc)alpha decay D)beta decayD)beta decay answer answer answer

fussion fussion

Carbon-14 forms nitrogen-14 by Carbon-14 forms nitrogen-14 by A)alpha decayA)alpha decay B)beta decayB)beta decay C)gamma decayC)gamma decay D)none of the aboveD)none of the above answer answer answer

B)beta decay B)beta decay

____  e + N ____  e + N answer answer answer

14 O8

Define the term “half-life” Define the term “half-life” answer answer answer

The time it takes for half of the atoms present to undergo radioactive decay The time it takes for half of the atoms present to undergo radioactive decay

What radioisotope is used to date biological specimens? What radioisotope is used to date biological specimens? answer answer answer

C-14 C-14

What biological specimens is used to date rocks? What biological specimens is used to date rocks? answer answer answer

U-235 U-235

An original sample contains 200 g of C-14. If after 11,460 years there is only 50 g, what is the half-life of c-14? An original sample contains 200 g of C-14. If after 11,460 years there is only 50 g, what is the half-life of c-14? answer answer answer

5,730 years 5,730 years

A sample of radioisotope had a mass of 100.0g. After exactly 24 days, 6.25 g of the sample remain unchanged. The half-life of the isotope is ________ days A sample of radioisotope had a mass of 100.0g. After exactly 24 days, 6.25 g of the sample remain unchanged. The half-life of the isotope is ________ days answer answer answer

6 days 6 days

What is the main fuel of a nuclear power plant What is the main fuel of a nuclear power plant answer answer answer

Uranium Uranium

What keeps a nuclear power plant cool (what takes away the heat from the reactor)? What keeps a nuclear power plant cool (what takes away the heat from the reactor)? answer answer answer

Water running through pipes and circulated by pumps Water running through pipes and circulated by pumps

Process by which neutrons are slowed down so that they are able to cause fission Process by which neutrons are slowed down so that they are able to cause fission answer answer answer

Neutron moderation Neutron moderation

Process by which the number of neutrons is decreased in order to slow down the reaction (fission) Process by which the number of neutrons is decreased in order to slow down the reaction (fission) answer answer answer

Neutron absorption Neutron absorption

What structure is responsible for nuclear absorption and specifically what material is it made of? What structure is responsible for nuclear absorption and specifically what material is it made of? answer answer answer

Control rods; Cadmium Control rods; Cadmium

Which of the following would be most susceptible to damage from gamma radiation? Which of the following would be most susceptible to damage from gamma radiation? A)a piece of woodA)a piece of wood B)soft tissueB)soft tissue C)a piece of metalC)a piece of metal D)a piece of cartonD)a piece of carton answer answer answer

B)Soft tissue B)Soft tissue

What would you have to wear if you go into a nuclear power plant to measure the amount of radiation you’re exposed to? What would you have to wear if you go into a nuclear power plant to measure the amount of radiation you’re exposed to? answer answer answer

A film badge A film badge

What device detects radiation by measuring electric current created by ionized gas? What device detects radiation by measuring electric current created by ionized gas? answer answer answer

A geiger counter A geiger counter

What is the tip of a scintillation counter made of? What is the tip of a scintillation counter made of? answer answer answer

Phosphorus Phosphorus

What exactly does a scintillation counter measure in order to detect the amount ionizing radiation? What exactly does a scintillation counter measure in order to detect the amount ionizing radiation? answer answer answer

The intensity of the light created from electrons falling back to their original orbits The intensity of the light created from electrons falling back to their original orbits