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20 to 22 September 2019
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Quote of the day
I do not keep up with the details of particle physics.
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@Chrishamper 17 Mar 17:01RT @TOKtweet: Beta version of Chris Hamper's amazing Physics website for IBDP students now out. Great for revision - & FREE - https://t.co/…
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IntroductionPlotting PV curves for isothermal and adiabatic changes is also covered in the worksheet PV diagram in geogebra but plotting the closed curves of a Carnot cycle is a bit clumsy so here is an alternative (better) method. In the previous example the curves are plotted by tracing a point whose position is defined by the equations for isothermal and adiabatic changes. In this example the lines...
AimsUnderstand how a cyclic process can result in net work being doneInvestigate the "rectangular" cycleRepresent a heat engine with a flow diagramDerive the equation for thermal efficiencyInvestigate the Carnot cycleUnderstand how a refrigerator is based on a reverse cycleCyclic processesA cyclic process is a series of transformations that take the gas back to its original state. These...
AimsIntroduce the idea that that energy will naturally become more spread out as a consequence of the particle nature of matterState the second law in its different forms and understand that they mean the same thingDefine entropyUnderstand the relationship between entropy and the second lawDescribe processes in terms of entropy changeIntroductionAccording to the first law of thermodynamics, if you...
- Introduce the concept of fields to explain how bodies can experience a force without contact.
- State Newton's Universal law and apply it to calculate the force acting on a body close to the earth.
- See how Newton's law gives the correct value for the acceleration of gravity close to the earth and the period of the earth's orbit around the Sun.
- Understand the concept of "field strength" as a measure of the size of a field and calculate field strengths.
- Understand how field lines can be used to give a visual representation of the field.
- Know that field strength is a vector, add field strengths as vectors.
Practical skills are assessed in two different ways, the internally assessed (and externally moderated) investigation and the externally assessed question on a list of prescribed practicals on paper 3.The InvestigationThe investigation is a 10 hour, 6 – 12 page scientific paper on some aspect of physics that interests the student (ideally). It counts for 20% of the final grade and is assessed...
Analysis of data is basically what we used to call data collection processing and presentation plus a bit of the evaluation. As with the other criteria this is a holistic assessment based on the whole report so you can't pin it down as easily as you could with DCP. There are many ways of analyzing data, linearizing and drawing straight lines, curve plotting and statistical analysis, all count...
The IB mark scheme gives the letters of the correct answers but not the complete solution. The examiners report gives some more details and statistics but again no worked solution. Here I have written out how I would solve each problem, this may not be the intended way and there has been a lot of OCC discussion on a couple of them but I've done it anyway. Students need to be familiar with MC...
A well planned site with lots of informations in Physics!
I was new to teaching IB and moved to a brand new school with no other Physics teacher and no resources at all... With the huge help from the InThinking Physics site I was able to put in place a course with no problems at all. It has been like having...
I consider Chris Hamper's InThinking page for IB Physics to be an indispensable resource for the course. Whether you use his textbook or not the IA section alone is worth the subscription cost.
14 February 2019
A couple of days ago I posted about this year's Group 4 project at UWCRCN. Students are going to measure electrical energy usage over a 24 hour... more
21 Feb Colin Cuthbert
Introduction to the siteHi Chris, Do you still have the two sections that I'm looking for? 1. Activities that the students work through at their own pace 2. The revision section with animations and questions etc I can't seem to find them
21 Feb Rodrigue Keumoe
MCQs: Moments of inertiaHi there Please I tried the second question on my own, I think that there is a mistake on that question. Angular accélaration = Sum of moment (we might take in consideration that weight are 1 kg and that will avoid the 2N force to move the...
21 Feb Joylene Vette-Guillaume
MCQs: Electric fieldsQuestion: I thought that the distance value in Coulomb's law is from the surface of a charged sphere because the charge will gather on the surface of a conductor rather than at its centre. So I tell my students to use the distance from the...
21 Feb Emma Mitchell
Standard Level CoreHi Jaya, I'm not actually Head of Physics at my school so I don't buy our books. I think that we generally order direct from the publisher but after a little shopping around to compare prices (against Amazon and local academic book sellers,...
21 Feb Chris Hamper
Introduction to the siteI'm afraid not, they were all written directly into the webpage editor interface. Copy and paste will get the text but not the boxes.
21 Feb Chris Hamper
Standard Level CoreI'm not sure, I get mine straight from the publisher. Maybe Emma has a recommendation.
21 Feb Jaya Ramchandani
Introduction to the siteHi Chris, do you have the doc files of these unit plans?
20 Feb Jaya Ramchandani
Standard Level CoreWhat's the best online shop to buy the text books? Warm regards, Jaya
20 Feb Chris Hamper
Ideas for investigationsCould be interesting if they compare with, for example an iterative model. Might also be interesting to attempt to limit the heat loss so that heat is only lost by one of the processes (convection, conduction and radiation) and see how it affects...
20 Feb Koelia Ojha
Ideas for investigationsHello Chris, One of my students is detecting the rate of cooling of a cup of milk vs the method of cooling. Do you think it will make a good IA? Kindly advice as I ma quite new to IA.
19 Feb Chris Hamper
MoneyHi Colin; That's what I thought but it turns out they're OK with it. Damp squib it is then.
18 Feb Colin Cuthbert
MoneyI think School Management would have a problem with it because it looks like payment rather than prize. Would a token, that can still be spent, be equally motivating but less controversial (even though it is essentially the same thing)