Lesson 6.4.2.4
6.4.2.4 Radioactive contamination Quiz: AQA Combined Science, Unit 21
20 questions
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Lesson 6.4.2.4, Radioactive contamination: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 21: Atomic structure, written with Revision Ninja.
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The 20 questions
-
What term describes the unwanted presence of radioactive atoms on other materials?
- Contamination
- Absorption
- Ionisation
- Irradiation
-
What term describes the process of exposing an object to nuclear radiation?
- Decay
- Fission
- Irradiation
- Contamination
-
Does an object become radioactive when it undergoes irradiation?
- No
- Yes
- Only if metal
- Always
-
What is the direct cause of the hazard associated with radioactive contamination?
- Decay of atoms
- Heating effect
- Chemical toxicity
- Magnetic fields
-
What factor determines the level of hazard posed by a radioactive contaminant?
- Ambient temperature
- Type of radiation
- Object mass
- Chemical colour
-
Why is radioactive contamination generally more hazardous than irradiation?
- Radiation continues
- Atoms stop decaying
- Radiation is absorbed
- Source is removed
-
Why are safety precautions necessary when carrying out the process of irradiation?
- Radiation stops completely
- Objects become radioactive
- Air turns toxic
- Source is hazardous
-
Why must scientific studies on the effects of radiation undergo peer review?
- Patented quickly
- Kept secret
- Funded publicly
- Checked by others
-
What is the primary danger if a radioactive powder gets onto a protective glove?
- Glove melts
- Source disappears
- Mass increases
- Spreads to skin
-
A metal plate is irradiated in a lab. What remains a potential hazard afterwards?
- Surrounding air
- Cooling water
- Radiation source
- The metal plate
-
Why is internal contamination by an alpha emitter particularly dangerous?
- Magnetic locally
- Chemically inert
- Strongly ionising
- Highly penetrating
-
What does a very long half-life imply about a radioactive contaminant?
- Safe immediately
- Non-ionising
- Zero activity
- Long-term hazard
-
What defines radioactive contamination compared to irradiation?
- Exposure to gamma rays
- Induced permanent magnetism
- Heating by radiation
- Unwanted radioactive atoms present
-
What primarily determines the level of hazard from radioactive contamination?
- Air pressure
- Object mass
- Type of radiation emitted
- Distance from source
-
What causes the hazard from radioactive contamination on a surface?
- Decay of atoms
- Reflection of light
- Chemical reactivity
- Electrical conductivity
-
What happens to an object when it undergoes the process of irradiation?
- Does not become radioactive
- Melts completely
- Becomes contaminated
- Emits alpha particles
-
Why are research findings on radiation effects shared with other scientists?
- Tax exemption
- Peer review
- Commercial profit
- Patent registration
-
Which of these is a standard example of irradiation?
- Sterilising medical equipment
- Touching contaminated soil
- Spilling radioactive liquid
- Inhaling radioactive dust
-
Which of these represents an example of radioactive contamination?
- UV light on fabric
- Gamma scan of pipe
- X-ray in hospital
- Radioactive dust on skin
-
What happens to an irradiated object after the radiation source is removed?
- It becomes radioactive
- It dissolves completely
- It remains non-radioactive
- It attracts magnets
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