1. Types of Radiation

2. 1N None Neutron or Neutrino Heavy water –H2O made with 3H
SYMBOL
GREEK
LETTER
NAME
STOPPED
BY?
HARM/NOTES 1N
None
Neutron or Neutrino
Heavy water –H2O made with 3H
-Very harmful
-Dangerous to eyes
-Causes “radiation burns”

3. 1N None 4He = 2p 2 2n Alpha Harmful if swallowed or inhaled
SYMBOL
GREEK
LETTER
NAME
STOPPED
BY?
HARM/NOTES 1N
None
Neutron or Neutrino
Heavy water –H2O made with 3H
-Very harmful
-Dangerous to eyes
-Causes “radiation burns”
4He = 2p n
Alpha
Paper
Skin
Cloth
Harmful if swallowed or inhaled

4. 1N None 4He = 2p 2 2n Alpha 0e -1 Beta Wood
SYMBOL
GREEK
LETTER
NAME
STOPPED
BY?
HARM/NOTES 1N
None
Neutron or Neutrino
Heavy water –H2O made with 3H
-Very harmful
-Dangerous to eyes
-Causes “radiation burns”
4He = 2p n
Alpha
Paper
Skin
Cloth
Harmful if swallowed or inhaled 0e -1
Beta
Wood
Electrons seperated from nucleus. Can ionize in body and create major problems

5. 1N None 4He = 2p 2 2n Alpha 0e -1 Beta Wood Gamma
SYMBOL
GREEK
LETTER
NAME
STOPPED
BY?
HARM/NOTES 1N
None
Neutron or Neutrino
Heavy water –H2O made with 3H
-Very harmful
-Dangerous to eyes
-Causes “radiation burns”
4He = 2p n
Alpha
Paper
Skin
Cloth
Harmful if swallowed or inhaled 0e -1
Beta
Wood
Electrons seperated from nucleus. Can ionize in body and create major problems
Gamma
Nothing stops; slows
Lead> concrete > wood > water
Effects decrease overtime (gets less harmful as it passes through things)

6. US Nave Skittle Activity
You will be given 4 skittles each color will represent one of the following:
-1 alpha particle
-1 beta particle
-1 gamma particle
-1 neutron
You must decide how to best protect yourself from the harmful effects of those four types of radiation. You may….
-eat one
-hold one
-put one in your pocket
-throw one away (ie. set on your desk out of the way)
You have 30 seconds to decide what to do….GO!
Record your results and how you decided:

7. EAT
HOLD
POCKET
TOSS

8. Homework:
25.3 p813 #15-20