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GCSE
Physics paper 1
Why Radiation is Harmful
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Created by
Mabli Collyer
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Cards (17)
What is irradiation?
Exposure
of an object to
radiation
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What types of radiation can cause irradiation?
Ionizing
and
non-ionizing
radiation
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What are examples of ionizing radiation?
Alpha particles
,
beta particles
,
gamma rays
,
x-rays
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What are examples of non-ionizing radiation?
Ultraviolet
and
microwave
radiation
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What does contamination refer to?
Radioactive
particles
on
other
objects
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Why is contamination a concern?
It
increases
the risk of
irradiation
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What factors determine how harmful radiation is?
Type
of
radiation,
exposure
location,
dosage
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Why are ionizing radiations considered more dangerous?
They can enter
cells
and
ionize
DNA
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What can ionizing radiation cause in DNA?
Mutations
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What rare condition can mutations lead to?
Uncontrolled
cell
division
and
cancer
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Which type of radiation can lead to cancer, even if not ionizing?
Ultraviolet
radiation
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How does the harmfulness of radiation change based on its source location?
Alpha
radiation is most harmful
inside
the body
Beta
and
gamma
radiation are more dangerous
outside
the body
Alpha cannot
penetrate
skin, but
beta
and
gamma
can
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What factors influence the dosage of radiation exposure?
Distance
, exposure
time,
radioactivity
level
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What precautions should be taken around radioactive sources?
Wear
protective
gear
(
gloves,
overalls)
Use
tools
(tongs) to handle items
Store items in
lead-lined
boxes
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Can being irradiated cause mutations or make someone radioactive?
No, it cannot cause mutations or
radioactivity
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When can someone harm others with radiation?
When
carrying
a
radioactive
source
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What is the main difference between irradiation and contamination?
Irradiation:
exposure to radiation
Contamination:
radioactive particles on objects
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