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WorksheetsGCSE Uses and Dangers of Radioactivity
Total questions: 20
Worksheet time: 38mins
What is the rate of decay of a sample called?
Activity
Count rate
What is the number of counts reaching a detector each second called?
Activity
Count rate
When radioactive material gets into or onto an object
Contamination
Irradiation
When an object is exposed to radiation
Contamination
Irradiation
Which of these is not a safety precaution for using radioactive sources?
Keep source in a lead box
Use tongs or gloves
Wear goggles
Do not point at people
Tick all the risks of radiation
Damaged cells
Kills cells
Flashes in eyes
Cells divide and become cancer
Time taken for radioactivity to half is called ____-____
(a)
What is the half life?
1
2
3
4
If the count rate is 64 Bq now, what will it be in 2 half lives?
64
32
16
8
If the count rate is 64 Bq now, what will it be in 3 half lives?
64
32
16
8
Tick all the things that can affect your radiation dose
Your job
Your location
Your name
Your age
Tick the artificial sources of background radiation
Rocks
Nuclear waste
Air
Cosmic rays
Tick the natural sources of background radiation
Cosmic rays
Medical X Rays
Nuclear waste
Rocks
Which type of nuclear radiation source would you use for a medical tracer?
alpha α
beta β
gamma γ
Which type of nuclear radiation source would you use for a medical implant to kill cancer?
alpha α
beta β
gamma γ
What type of nuclear energy reaction happens in the sun?
fission
fusion
What type of nuclear energy reaction happens in a power station?
fission
fusion
What type of nuclear energy reaction splits a large nucleus into smaller nuclei?
fission
fusion
What type of nuclear energy reaction joins together smaller nuclei?
fission
fusion
What type of nuclear energy reaction is induced (set off) by a neutron?
fission
fusion
