7.14

starter

01 February 2012

13:08

Tell the person next to you…

·         What is the most dangerous type of radiation outside the body?  Why?

·         What is the most dangerous type of radiation inside the body?  Why?

·         Gamma radiation is the most dangerous type of radiation outside the body because it is extremely penetrating.  (Alpha radiation is not dangerous because it is stopped by skin)

·         Alpha radiation is the most dangerous type of radiation inside the body because it is highly ionising due to its high charge (+2) and high mass (RAM=4).  (Gamma radiation is only very weakly ionising)

 

 

7.14

12 January 2012

10:24

·         7.14 describe the dangers of ionising radiations, including:

·         radiation can cause mutations in living organisms

·         radiation can damage cells and tissue

·         the problems arising in the disposal of radioactive waste

<<Dangers of radioactivity.pptm>>

Chernobyl Disaster

Hiroshima and Nagasaki - the first nuclear bombs

After the Hiroshima bomb

Dangers of radioactivity.pptm Download this file

alpha, beta, gamma - effect on human body.pptx Download this file