Luke Physics: Fw: 7.14

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From: Matt Baker <maba@patana.ac.th>

Date: Wed, 7 Mar 2012 14:28:42 +0700

To: Andrew Koomenjoe Nyaga<anny14@patana.ac.th>; Arisara Amrapala<aram14@patana.ac.th>; Boondaree Chang<boch14@patana.ac.th>; Chrischawit Chomsoonthorn<chcm14@patana.ac.th>; Christopher Lo<chlo14@patana.ac.th>; Connor Blair Sailes<cosa14@patana.ac.th>; Frazer Allen Briggs<frbr14@patana.ac.th>; Huei-Yu Daniel Lo<hulo14@patana.ac.th>; Isabel Catriona McDonald<ismd14@patana.ac.th>; Kavin Supatravanij<kasu14@patana.ac.th>; Luke Michael Gebbie<luge14@patana.ac.th>; Lydia Anna Foley<lyfo14@patana.ac.th>; Morrakot Sae-Huang<mosa14@patana.ac.th>; Puchawin Borirackujarean<pubo14@patana.ac.th>; Qing Tang<qita14@patana.ac.th>; Sanyam Grewal<sagr14@patana.ac.th>; Sebastien Grimm<segr14@patana.ac.th>; Soo Hyun Lee<sole14@patana.ac.th>; Tatiksha Singh<tasi14@patana.ac.th>; Usa Wongsanguan<uswo14@patana.ac.th>; Yanida Areekul<yaar14@patana.ac.th>; Yi-Lin Huang<yihu14@patana.ac.th>

Subject: 7.14

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?

<<alpha, beta, gamma - effect on human body.pptx>>

<<BBC NEWS Health What is polonium-210.mht>>

Answers

· 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