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- 1. Multiple Choice
In order to get accurate results with radioactivity what do we need to do?
Repeat it
Do it for a short time
Do it for a long time
Repeat it and do it for a long time
- 2. Multiple Choice
Radioisotopes do NOT occur naturally.
True
False
- 3. Multiple Choice
Which of these is the most suitable description of background radiation?
A measure of the level of ionising radiation present in the environment at a particular location
A measure of how much radiation you absorb
A measure of radiation that comes from space only
A measure of radiation that comes from the buildings
- 4. Multiple Choice
What is the most common source of background radiation?
Radium
Nuclear waste
Radon
Cosmic rays
- 5. Fill in the Blank
What percentage of background radiation in the UK comes from radon gas?
- 6. Multiple Choice
Which of these best describes why radon is a dangerous radioactive gas?
It emits alpha and it can be breathed in and out
It emits alpha and it can be breathed in and can ionise cells
It emits beta and it can be breathed in and can ionise cells
It can be breathed in and it can go the the brain
- 7. Multiple Choice
After Radon, which of these is the biggest source of background radiation?
Buildings and ground
Nuclear power stations
Water
Cosmic rays
- 8. Multiple Choice
All background radiation comes from natural sources.
True
False
- 9. Multiple Choice
What unit is radiation dose measured in?
Sieverts (Sv)
Seaverts (sV)
Radons (Rn)
Becquerels (Bq)
- 10. Multiple Choice
Why is the background radiation from cosmic rays relatively low for most people?
Our clothes protect us.
The atmosphere absorbs a lot of cosmic rays.
We are too far from the Sun.
Satellites reflect them back into space.
- 11. Open Ended
Explain why a pilot receives a larger dose of background radiation that someone who does not fly.
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