7.4 and 7.5

7.4 and 7.5 starter
Tell the person next to you…
· What are the 7 parts of the electromagnetic spectrum you learnt in P3, Waves?
· What are they in order of increasing frequency?

(Note that microwaves are missing from this animation!)

Answers
· Radio waves
· Microwaves
3. Infra Red
4. Visible
5. Ultra violet
6. X-Rays
7. Gamma Rays

7.4 and 7.5
· 7.4 understand that alpha and beta particles and gamma rays are ionising radiations emitted from unstable nuclei in a random process
· 7.5 describe the nature of alpha and beta particles and gamma rays and recall that they may be distinguished in terms of penetrating power

Producing Alpha, Beta and Gamma radiation
· http://youtu.be/pHUgL_RS9ng

Penetrating Power
· http://www.youtube.com/watch?v=48JQaZHuFsQ&feature=youtu.be
· http://youtu.be/61y2GTr0MlQ

Ionisation

Effect of magnetic and electric fields

producing a,b,g.pptx Download this file

penetrating power.swf Download this file

ionisation.pptx Download this file

Interactive simulation - penetration of radiation.swf Download this file

effect of magnetic field on a,b,g.swf Download this file

effect of electric field on a,b,g.swf Download this file

e-m spec.swf Download this file

DJFPh109ioniz2.swf Download this file

DJFPh109gammy5.swf Download this file

DJFPh107pene3.swf Download this file

decays emitting a,b,g.swf Download this file

Animation - ionisation of atom by radiation.swf Download this file