Lesson 4.4.2.4
4.4.2.4 Radioactive contamination Quiz: AQA Physics, Unit 4
20 questions
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Lesson 4.4.2.4, Radioactive contamination: 20 multiple choice questions for the AQA GCSE Physics (8463), Unit 4: Atomic structure, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
What is the unwanted presence of radioactive atoms on materials called?
- Ionisation
- Contamination
- Background radiation
- Irradiation
-
What term describes exposing an object to nuclear radiation?
- Fission
- Contamination
- Irradiation
- Absorption
-
What happens to an object when it undergoes irradiation?
- Gains mass
- Melts entirely
- Remains non-radioactive
- Becomes radioactive
-
What causes the hazard from radioactive contamination?
- Thermal energy
- Magnetic fields
- Decay of atoms
- Chemical toxicity
-
Which factor determines the level of hazard from radioactive contamination?
- Air pressure
- Surface colour
- Object mass
- Radiation type
-
Which differs between contamination and irradiation?
- Source distance
- Half-life value
- Radioactivity of object
- Radiation type
-
Why is a surface with radioactive contamination dangerous?
- Continuous radiation emission
- Permanent magnetic fields
- Instant thermal burns
- High chemical toxicity
-
What safety precaution is needed when handling an irradiated object?
- Airtight sealing
- Lead suit
- Source precautions
- Full decontamination
-
Why must scientific findings on the effects of radiation be shared?
- Public panic
- Commercial gain
- Government censorship
- Peer review
-
Which action directly reduces the hazard from a contaminated bench?
- Cleaning
- Irradiating
- Sealing
- Cooling
-
Which radioactive emission inside the human body causes the greatest localized damage?
- Beta
- Neutrons
- Gamma
- Alpha
-
A radioactive dust spreads onto a laboratory table. This is an example of:
- Nuclear fission
- Irradiation
- Contamination
- Background radiation
-
Sterilising food by exposing it to gamma rays, without making the food radioactive, is an example of:
- Nuclear fission
- Irradiation
- Half-life decay
- Contamination
-
Which type of radiation from contaminating atoms is generally the most hazardous if it is taken into the body?
- Electromagnetic wave
- Radio wave
- Gamma ray
- Alpha particle
-
Must an irradiated object be isolated from people afterwards?
- Only overnight
- No
- Yes
- Only if lead-shielded
-
How is the hazard removed from a surface contaminated with alpha emitters?
- Shielding
- Freezing
- Washing
- Heating
-
What precaution is needed when using a radioactive source for irradiation?
- Radiation safety
- Pressure release
- Electrical earthing
- Thermal insulation
-
What term describes unwanted radioactive atoms present on a material?
- Ionisation
- Irradiation
- Background
- Contamination
-
Which process allows independent scientists to validate radiation research?
- Condensation
- Peer review
- Filtration
- Calibration
-
What is the correct first response to a radioactive contamination spill?
- Restrict access
- Ignore it
- Ventilate room
- Turn off lights
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