Alterations.....

Not sure why google docs keeps playing with documents I post, but for the last question those funny 'a' symbos should be arrows showing what comes from the original elements when they emit the particles.

Test paper

Here is the link to the test paper that we used on Friday, it might be useful for revision.  The one question that was completed most poorly by the class was the final one on alpha and beta emissions, so looking at that might be a good start. 
However, overall marks are good and people should be happy with what they achieved.  Have a good break and don't forget Mr. VDH's revision sessions on this Friday.
https://docs.google.com/document/d/1STNsBWwKGkYkI2_TQ951XXHySdTGhMfnkPyudd59xEI/edit?hl=en&authkey=COHb7_sE

circuits

So this isn't extremely relevant to the course, but there's some electrical circuit stuff here and might be a good watch if you're feeling like revision is getting a bit tough.....

Test revision

THere are some good activities on this bitesize link - http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/ .  Scroll down to electricity or radiation.  I've also uploaded a short slideshow with formulas that we'll need for the test on Friday so make sure that youre happy with what each one is used for as well as being able to use them to solve problems. 
Slideshow: https://docs.google.com/leaf?id=0BzFUvVu_WNI_MGVhZTU5NTktYWQyZC00NzAxLWEyNzUtYTgyOWNjZDI2Nzg5&hl=en&authkey=CP7w3ZUB

Have a good week and make sure if  you have any questions you come and see me before Friday.

Change of test date

Sorry for the confusion, not sure why but I didn't realise that we had a lesson on Friday!  That being the case, we'll do some more revision type stuff on Wednesday for the test at the end of the week.  Still have a go at the questions already here as they'll be good preparation.

Here is a revision set for the nuclear reactions section: Make sure you're comfortable with the different types of reactions and the dangers of nuclear energy.

1. What are alpha and beta particles made up of? Describe the changes in the nucleus that occur with each type of emission:

2. Try the questions on this powerpoint to practice the reactions we were using earlier in the topic: https://docs.google.com/leaf?id=0BzFUvVu_WNI_MjFmYzJhODEtM2ZjNS00NTU1LTg4MzctNjY1MzE4MzMyNDM2&hl=en&authkey=CJeomOAF
Its intentionally very boring-looking so it doesnt move off the page again!

3. Name some sources of background radiation, as well as some uses for nuclear reactions.

4. Describe the reaction that takes place in a nucelar reactor, explaining how it can be controlled to avoid meltdown and how electricity is produced.  Include diagrams if you wish.

Test

For those of you who weren't in class on Friday, we will be doing a test in class on Wednesday.  It will cover the electricity topic we've been finishing (circuits, calculations) as well as the nuclear reactions section.  I'll upload a revision sheet here this afternoon, so make sure you have a look tonight so you can let me know if you have any questions before Wednesday.  As with the last test, if you're happy with everything on the revision sheet the test should be fine.