08/05/08
Bye all. [email protected] or [email protected] for last minute questions. Good luck....
The final push. Electromagnetism.
Electromagnetism revision links
Brilliant set of exam style electromagnetism questions - with answers!
Before next lesson RM must mark ME and JH papers. Also answers priority is: e-m, solids liquids gases, waves, energy. 2 more papers for next time perhaps?
Next time, last time - paper 3 questions.
You were given every my answers to every radioactivity question ever to check agaisnt your efforts. You also got the 2 most recent paper 2Hs and 3s with markschemes. They should be dynamite for revision.
We started looking through work energy and power. Quite a few formulae for you to remember in this topic, although it is generally fairly straightforward.
Revise here ; our syllabus seems to fit with the Scots rather well.
We then began to talk through the solids, liquids and gases topic, but you had had enough.
IGCSE Qs on both these topics will be dug out on Thursday.
Art GCSE (I mean really, art?) impinged for some. The rest of us got on with every IGCSE radioactivity question ever. Also a Paper 3 (specimen) was distributed.
Radioactivity revision, , and more .
RM needs to make answers for both waves and radioactivity. We have energy, pressure and gas laws and electromagnetism left to revise.
Waves revision ended. You received every IGCSE waves question ever. Answers will probably be forthcoming eventually. You also got the answers to every electricity question ever.
Waves revision continued.
We went through Snell's law as you are expected to know it: sin i/sin r = n (more simply than in the 3rd form) and critical angles/total internal reflection.
The we hit the electromagnetic spectrum.
Finally I reminded you about the advantages of digital communication. Sampling an analogue signal to discete values....
then converting it to base 2 (binary)
avoids any uncertainty in the information content of the signal.
You were issued with frankly shedloads of waves and em spectrum questions to answer during revision. I'll do all the IGCSE ones for you next time, then we can move on to radioactivity.
Waves Revision. We went through units and basic definitions. Also the law of reflection and diffraction. Refraction was dealt with qualitatively, but we have to recall Snell's Law and look at em waves next time.
BBC waves basics revision - nice animations.