Physics Unit 5 Radioactivity
- Created by: Nicola Hanson
- Created on: 14-04-13 17:26
Other questions in this quiz
2. Why do substances for medical tracers have a 6 hour half life?
- Stable enough to make measurements and decays away after use
- Short enough that radiation won't reach sensitive parts of the body
- Radioactive substance will be digested before it fully decays
3. What is the de Broglie wavelength of electrons in electron diffraction?
- 10^-10m
- 10^-15m
- 10^-12m
4. Why is a vacuum needed for the alpha scattering experiment?
- Alpha radiation might come from the air particles
- Alpha particles scatter off of air particles
- Alpha particles would be slowed down
5. What are the effects of ionisation on the body?
- Destroys cell membrane and damages DNA
- Destroys cell membrane but DNA is unaffected
- Damages DNA but cell membrane is unaffected
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