1 Radiation and Life Revision for January 2011. 2.

1

Radiation and Life

Revision for January 2011

3

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

4


ADIO

Learn the OrderR

ICROWAVE

MNFRARED

IISIBLE

VLTRAVIOLET

URAY

XAMMA

G

5

Robbie Makes It Vibrate...

6

... Using X-rated Goods

X rated

7


OBBIE

Robbie makes it vibrate using x-rated goods

RAKES

MT

IIBRATE

VSING

URATED

XOODS

G

8


OBBIE

again...R

AKES

MT

IIBRATE

VSING

URATED

XOODS

G

9


OBBIE

last time for Robbie...R

AKES

MT

IIBRATE

VSING

URATED

XOODS

G

10


ADIO

Which are ionisingR

ICROWAVE

MNFRARED

IISIBLE

VLTRAVIOLET

URAY

XAMMA

G

11


Ionising radiation• High energy photons

• Can break molecules

• Can damage DNA

• Can cause cancer

Ionising – so what?

LTRAVIOLET

URAY

XAMMA

G

12

Animation of breaking molecules?

13

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

14

Cause, Correlation, Factor, Outcome

(a) Which two people have taken actions that will reduce the amount of carbon dioxide in the atmosphere?

15


(b) Which one person mentions a correlation between a factor and an outcome?

16


(c) Which two people have identified possible consequences of global warming?

17

Risk and Benefit

18

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

19

Risks and Benefits

Which two people are taking action to reduce the risks from exposure to ultraviolet?

20

Risks and Benefits

Who is talking about the dangers from exposure to ultraviolet? (It could be more than one.)

21

Risks and Benefits

Who is talking about the benefits from exposure to ultraviolet? (It could be more than one.)

22

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

23

Risks and Benefits

The article suggests there is a risk to using a mobile phone.

Which two students seem unaware of any risks?

24

Risks and Benefits

Which two students have done things that lead to a lower risk?

25

Risks and Benefits

26

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

1 Radiation and Life Revision for January 2011. 2.

Documents

Transcript of 1 Radiation and Life Revision for January 2011. 2.