WorksheetsRadioactivity Practice
Total questions: 10
Worksheet time: 5mins
What is the main reason for the decrease in activity of a radioactive source over time?
The rate of emission detection decreases
The rate of emission detection increases
More unstable nuclei are produced
Unstable nuclei become stable through decay
Which type of radiation emitted has the strongest ionisation ability?
Proton
Gamma ray
Beta particle
Alpha particle
What is the main effect of intense dose of radiation on cells?
The DNA is damaged and passed on to future generations
The cells die as if burned
The cells divide uncontrollably
The DNA is damaged and the cells become lighter
What is the charge on a neutron?
2
1
0
-e
Which type of radiation can penetrate a thick sheet of lead or meters of concrete?
Proton
Alpha particle
Gamma ray
Beta particle
What is the time taken for radioactivity to halve called?
Nuclear decay
Activity time
Half-life
Decay rate
Which isotope is used for sterilisation of equipment using gamma rays?
Uranium-235
Americium-238
Plutonium-238
Uranium-234
What is the charge of an electron?
0
-e
2
1
What is the type of radiation emitted when the nucleus changes to that of a different element?
Proton emission
Alpha decay
Beta decay
Gamma emission
Which isotope is used for household fire (smoke) alarms?
Uranium-234
Uranium-235
Plutonium-238
Americium-238
