What is radioactivity?
The diagram shows a radioactive source emitting nuclear radiation which is passing through various materials - Leaving Cert Physics - Question d - 2010
Question d
What is radioactivity?
The diagram shows a radioactive source emitting nuclear radiation which is passing through various materials.
(i) How do you know that t... show full transcript
Worked Solution & Example Answer:What is radioactivity?
The diagram shows a radioactive source emitting nuclear radiation which is passing through various materials - Leaving Cert Physics - Question d - 2010
Step 1
How do you know that the source is emitting three types of radiation?
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Answer
The source is emitting three types of radiation because different materials in the diagram can stop specific types of radiation. The paper blocks alpha radiation, the aluminum blocks beta radiation, and the concrete blocks gamma radiation. This indicates the presence of all three types of nuclear radiation.
Step 2
Name the radiation blocked by each material.
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Answer
Paper blocks alpha radiation.
Aluminum blocks beta radiation.
Concrete blocks gamma radiation.
Step 3
Give one danger associated with nuclear radiation.
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One significant danger associated with nuclear radiation is the risk of cancer due to exposure, as radiation can cause damage to DNA and increase the likelihood of cell mutations.
Step 4
State two precautions that should be taken when handling radioactive substances.
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Use tongs to handle radioactive materials to avoid direct contact with the skin.
Wear gloves to provide an additional layer of protection against radioactive exposure.
Step 5
Give two uses for radioactive substances.
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Medical diagnostic imaging, such as PET scans, where radioactive tracers help visualize internal body processes.
Industrial applications, like radiographic testing, where radioactive isotopes are used to detect structural flaws in materials.
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