In our discussions yesterday, one of the things that cropped up was that we need to revise the material covered before the summer holidays. I thought I would make a start on this by looking at significant figures.
You might have heard me referring to “calculator vomit” in class. This is an expression I use whenever people simply write down the answer provided by their calculator, without thinking about whether or not the number of decimal places reported is appropriate. In Physics, we can avoid “calculator vomit” by using significant figures. I’ve provided some links below to direct you to sites that explain what significant figures are and how to use them.
If you’ve read through some of those pages and feel that you are ready for a test, you can try your luck at
Note: these links might also be useful for AH pupils analysing their investigation data.
Some of you have been asking why people are talking about the world ending on Wednesday. Funny how this question has arisen whenever I hand out homework! I’ve spoken about the Large Hadron Collider and some of you may have seen the BBC coverage on Big Bang Night last week. They also have some special programmes scheduled to commemorate the day the LHC is switched on, including a particle physics radio programme with Alan Alda, Ben Miller, Eddie Izzard, Dara O’Briain and John Barrowman but then I could have told you that Physics is the new rock’n’roll 😉
I’ve also found a rap video about the LHC. The clip seems to stream slowly so you might want to start it and hit pause to let it load fully before playing. Enjoy!
You should now have 4 anonymous investigation reports to mark according to the SQA instructions. Read and mark the reports in pairs, according to their subject. You will get the 1st period of our double on Monday to finish the task if necessary. We will spend period 6 comparing the marks awarded and discussing what is required for a successful report.
Remember I am looking for you to submit your LO3 report by the end of the first week back after the October holidays. I have scanned in the diagrams of the turntable and accessories so you don’t have to redraw them. Click on the thumbnails below to get the full size version, then right click to save to your own computer.