Radiation-the risks and uses
Radiation part 2
- Created by: Tally
- Created on: 09-05-10 12:38
Other questions in this quiz
2. What is the activity of a radioactive source measured in?
- becquerels
- grams
- watts
- seconds
- poises
3. What is meant by a half life of 100 000 years?
- after 100 000 years the ammount of radioactive atoms halves
- it will disappear in 100 000 years
- in 100 000 years the radiation will double
- it will stop being radioactive in half of 100 000 years
4. What is a cohort study?
- a study of how radiation is spread
- when scientists compare a sample exposed to a factor with a control group that isnt exposed to the factor
- a study of how diseases are spread
5. We tend to over-estimate the risk of unfamiliar activities relative to everyday ones. true or false?
- True
- False
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