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