1 radiation and life revision for january 2011. 2
TRANSCRIPT
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Radiation and Life
Revision for January 2011
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Electromagnetic Spectrum
This is the name for the family of waves that all behave like visible light. Learn
• the order
•which are ionising
•some effects on life
•some uses
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Electromagnetic Spectrum
ADIO
Learn the OrderR
ICROWAVE
MNFRARED
IISIBLE
VLTRAVIOLET
URAY
XAMMA
G
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Robbie Makes It Vibrate...
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... Using X-rated Goods
X rated
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Electromagnetic Spectrum
OBBIE
Robbie makes it vibrate using x-rated goods
RAKES
MT
IIBRATE
VSING
URATED
XOODS
G
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Electromagnetic Spectrum
OBBIE
again...R
AKES
MT
IIBRATE
VSING
URATED
XOODS
G
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Electromagnetic Spectrum
OBBIE
last time for Robbie...R
AKES
MT
IIBRATE
VSING
URATED
XOODS
G
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Electromagnetic Spectrum
ADIO
Which are ionisingR
ICROWAVE
MNFRARED
IISIBLE
VLTRAVIOLET
URAY
XAMMA
G
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Electromagnetic Spectrum
Ionising radiation• High energy photons
• Can break molecules
• Can damage DNA
• Can cause cancer
Ionising – so what?
LTRAVIOLET
URAY
XAMMA
G
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Animation of breaking molecules?
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Uses of radiationsEmitted by TV remote control
microwave
Emitted by mobile phone when sending a text
Emitted by sun-bed in a tanning studio
Used in hospitals to check for broken bones
visible
X-ray
gamma
???
???
???
radio
infra-red
ultra-violet
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Cause, Correlation, Factor, Outcome
(a) Which two people have taken actions that will reduce the amount of carbon dioxide in the atmosphere?
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Cause, Correlation, Factor, Outcome
(b) Which one person mentions a correlation between a factor and an outcome?
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Cause, Correlation, Factor, Outcome
(c) Which two people have identified possible consequences of global warming?
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Risk and Benefit
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Uses of radiationsUsed to heat foods quickly
radio
microwave
Used to make toast and grill foods
Used to show up security markings
Used to treat cancers
infra-red
visible
???
???
ultra-violet
X-ray
???gamma
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Risks and Benefits
Which two people are taking action to reduce the risks from exposure to ultraviolet?
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Risks and Benefits
Who is talking about the dangers from exposure to ultraviolet? (It could be more than one.)
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Risks and Benefits
Who is talking about the benefits from exposure to ultraviolet? (It could be more than one.)
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Uses of radiationsEmitted by TV remote control
gamma
Used to grill foods and make toast
Emitted by sun-bed in a tanning studio
Used by humans to see with their eyes
radio
???
???
???
???
???
ultra-violet
visible
infra-red
microwave
X-ray
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Risks and Benefits
The article suggests there is a risk to using a mobile phone.
Which two students seem unaware of any risks?
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Risks and Benefits
Which two students have done things that lead to a lower risk?
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Risks and Benefits
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Uses of radiationsHuman eyes can detect this
microwave
Emitted by any warm object
Used to see inside bags in airport security
Used in broadbast TV signals
visible
X-ray
???
???
???
radio
infra-red
ultra-violet
???gamma