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WorksheetsRadioactivity and Half life
Total questions: 15
Worksheet time: 8mins
Which type of radiation is stopped by lead and concrete?
Alpha
Beta
Gamma
Neutron
Which order is correct for the most to least ionising
Alpha-Beta-Gamma
Beta-Alpha-Gamma
Gamma-Beta-Alpha
Gamma-Alpha-Beta
Which type of radiation has 2 protons and 2 neutrons
Alpha
Beta
Gamma
Neutron
Which type of radiation is used by smoke detectors?
Alpha
Beta
Gamma
Neutron
In beta becay…..
A neutron becomes a proton and an electron
A proton becomes a neutrons and an electron
A electron becomes a protons and a neutron
It's just a wave
In beta decay a ______ is emitted from the nucleus
Neutron
Electron
Proton
Wave
Which two types of radioactive decay cause an atom of a new element to form?
Alpha and Beta
Beta and Gamma
Alpha and Gamma
None, no new element would form.
Which is the best definition of half-life?
Half the mass of the substance is left.
Only half the time taken for decay to occur
time taken for radioactivity to halve.
Half total decay occurs in a certain time.
If the radioactivity of a substance starts at 500 Bequerels. What will the radioactivity be after one half life?
1000
250
125
500
If the radioactivity of a substance starts at 800 Bequerels. What will the radioactivity be after two half lives?
800
400
200
100
If the radioactivity of a substance starts at 100 Bequerels. And the half life is 10 years. What will the radioactivity be after 20 years?
100
50
25
12.5
Using this graph, what is the half-life of the strontium?
10 years
25 years
50 years
150 years
When using radioactivity for medical treatment, which of these options would you choose?
Alpha radiation, short half-life (few days)
Alpha radiation, long half-life (few years)
Gamma radiation, short half-life (few days)
Gamma radiation, long half-life (few years)
When radioactive particles get on objects. They are....
contaminated
irradiated
dead
isotopes
Which of these defines irradiation
Radioactive particles are on the object
An object is exposed to radiation nearby
An object is radioactive itself
Radioactive particles don't affect the object
