I recorded this tutorial because of an email I received from one of the students in Ace Your IB Physics Exams. This extra tutorial addresses learning objectives 4, 5 & 6 in your revision list for Topic 1.
I’ll walk you step-by-step through a Paper 1 multiple choice question on solving ratios of orders of magnitudes.
Remember – no calculators for Paper 1! There is also a list of orders of magnitudes that need to be memorised.
I have a question regarding order of magnitude estimates
Are there any on which we should really really focus? For instance, I once came across an exercise where I HAD TO know the order of magnitude of nucleus…
You only need to know
- diameter of nucleus
- diameter of atom
- age of universe
- mass of universe
All shown at the end of this video
The only question you MIGHT need to use these estimates is in Paper 1 for one multiple choice questions about estimates of magnitude. The new specification doesn’t tend to include these types of questions any more – so I wouldn’t get too worried about memorising lots of magnitudes.
Hope this helps?