Transcript PILE22CO.20040629144..

22 Radiation and Radioactivity
‘Dirty bomb’
Have you ever heard of a
‘dirty bomb’?
 It is nuclear waste material packed with
explosives.
 Western countries are worried about the use of
it by terrorists since September 11, 2001.
Why are ‘dirty bombs’
so dangerous?
‘Dirty bombs’ contains radioactive materials
that emit harmful nuclear radiation.
What are the harmful
effects caused by the
radioactive materials?
Exposure to radioactive
materials results in
radiation sickness and
an increased risk of
cancer.