WorksheetsUnit 5 Review-Radioactivity, Fission/Fusion, Half-Life
Total questions: 18
Worksheet time: 17mins
Which type of radioactive decay can be stopped by a piece of paper?
alpha
beta
gamma
zeta
Which type of radioactive decay can only be stopped by a think layer of lead or concrete?
alpha
beta
gamma
zeta
What type of radioactive decay is represented by the equation?
alpha
beta
gamma
zeta
Which type of radioactive decay is represented by the equation?
alpha
beta
gamma
zeta
Gold-191 has a half-life of 12.4 hours. If a lab starts with sample of 10 mg, how much will remain after 37.2 hours?
5 mg
2.5 mg
1.25 mg
0.625
Carbon-14 has a half-life of 5,700 years. How much of a 1000 g sample will be left after 11400 years?
1000 g
500 g
250 g
125 g
This reaction creates large amounts of energy when nuclei split apart.
fusion
fission
friction
function
What does the picture represent?
fission
fusion
friction
function
Changes matter into energy.
fission
fusion
both
neither
Nuclear fusion is commonly found where?
In the sun
On the earth
In nuclear power plants
In a microwave oven
What kind of reaction is this?
fission
fusion
friction
function
Which two things cause an atom to be unstable and therefore radioactive?
Having more than 82 protons
Having too many energy levels
Not having a proton:neutron ratio of 1:1 for small atoms and 3:2 for large atoms
Having 8 valence electrons
What is the half-life of Carbon-14 according to the graph?
57 years
5700 years
23000 years
1000000 years
Nuclear waste typically remains radioactive for around how long?
100 years (a hundred years)
1000 years (a thousand years)
1,000,000 years (a hundred thousand years)
1,000,000,000 years (a billion years)
Which one is an advantage (a PRO) of nuclear energy?
It produces NO air pollution
It produces NO heat pollution
It produces radioactive waste
It can create health problems due to accidents
Tin-126 has a half-life of 100,000 years. How many years does it take for a 100 g sample to disintegrate to 12.5 g?
100,000 years
200,000 years
300,000 years
400,000 years
What kind of nuclear reaction is the picture showing?
fission
fusion
friction
function
Which type of decay can be stopped by thin metal, such as aluminum?
alpha
beta
gamma
zeta
