Exams

Unfortunately I still can't upload any documents so can't link to them, but if you have any questions before tomorrow feel free to email me at tco@cheney.oxon.sch.uk . LIke wise if anyone has any last minute questions I have tutor time with my group in W13 so feel free to drop in.  Good luck!

Revision powerpoint

Mr. Pike has sent me the revision powerpoint that you were using in class with him the other day, unfortunately I'm not able to upload it yet but should be able to do so soon.  Watch this space...

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.

Revision

We are starting revision now in class, and will be doing a few different things in lessons to cater for different people's learning styles.  Have a think about what you most need to revise from the year and come ready to let me know if you didnt today so I can draw up a program that is the most beneficial to all of us.  Otherwise, keep practising with past papers and resources like this website.

Heres the link to the information that each group used for their presentations today:
https://docs.google.com/document/d/1V8JMyxR5derTh-2y-PP4gq6NiXl_wBJD8QHvktLMcKA/edit?hl=en&authkey=CLDDnoQH
Make sure that you have a rough idea of what each concept covers, as these could pop up as short answer questions in the exam that you don't want to miss out on.  Next lesson (wed. afternoon) we'll talk more about revision etc. but until then making sure that you're up to date would be a good way to spend time.

I found this article the other day talking about the dangers of nuclear power - there is also some interesting reading to be found on what's happening in Japan at the moment. http://www.telegraph.co.uk/science/science-news/3309842/Windscale-fire-We-were-too-busy-to-panic.html#

https://docs.google.com/viewer?a=v&pid=explorer&chrome=true&srcid=0BzFUvVu_WNI_YmUzMDUxY2UtZThjYi00MjFkLWEwODItMWFjZjM0NzRjY2I0&hl=en
This is the link to the slideshow we used for the radiation lesson on Friday.  As I said in class, we had to move quickly to cover everything so make sure that you go back and have a better look at  the questions on the last slide.

Chernobyl

This is the video we saw in class today, dealing with the nucelar reactor accident at Chernobyl complete with amazing acting.  The link is

http://www.youtube.com/watch?v=zyHvDhILYl8&feature=related  if you want to watch more segments of the complete documentary.  Make sure you remember how fission occurs in a reactor and how the electricity is produced.

This is the video we saw in class where a geiger counter is used to measure radiation from colouring on a plate: http://www.youtube.com/watch?v=l93naDmFgzE&feature=related

Background radiation

Today we covered sources of background radiation, including rocks, the air, cosmic radiation and other radioactive everyday items such as smoke alarms (and old dinner plates! See the video above).  Make sure you can list one or two of these items.  We also revisited alpha and beta emissions, so use the slideshow on the link below to make sure youre up to speed with everything so far:
https://docs.google.com/present/edit?id=0ATFUvVu_WNI_ZGRxdDk3a3hfMGR0eHJ6Zmcz&hl=en&authkey=CJ-BrYcF

Types of emissions and radiation

For revision/homework this week, make sure that you know what the three types of radiation and emissions are (alpha, beta, gamma) as well as what particles are involved in each one.  For practice, try this question set:

1.       A polonium nucleus with 84 protons and 126 neutrons is unstable and decays by emitting an alpha particle.

a)        How many protons are in the original nucleus?                          ………………

b)        How many neutrons are in the original nucleus?                        ………………

c)        How many protons are in the product nucleus?                          ………………

d)        How many neutrons are in the product nucleus?                         ……………...
e)        What is the mass number of an alpha particle?                          .......................

Welcome!

Hi Year 11, I've just created this so I can share material that will help you revise what is being covered in class.  Make sure you save the address or write it down so you can check it regularly.