Very useful resource for students and teachers. Hopefully it is useful for your own revision. These values of L you have cover almost the whole range of values possible from minimum to maximum. Therefore, the resistance calculated can only be given to either 2 sf (least sf used in calculation) or 3 sf (1 better sf). (4) Use increased thickness of object These values of resistance must cover the whole range possible, like from minimum to maximum value possible (here keeping the difference between individual values of resistance for different combinations common is not necessary!). Now what is required for the graph? (1) Difficult to measure diameter because (object) is flexible/not circular. moulds, Error: That 1/I is calculated from I. Although the wording will look different in many places, the teaching content remains largely the same 2. updated the list of command words and their meanings to help learners know what's expected of them in the exam. in raw data. A bit of a weird one this, and something that isn't immediately obvious. All points must be plotted accurately so they are not more than 1mm away from where they must be plotted(slight offsetting is pardoned). 5 7 customer reviews. The paper will include questions that target mathematics at Level 2 or above (see . Then the calculated form (1/I) must have same number of sf, i.e. Then the number of s.f. Greek astronomy 3. (1) Hard to see water surface due to refraction effects/ meniscus effect There must be an even distribution of points either side of the line along the full length, as we can call the best fit line ‘Insaaf Wali Line’ in Urdu, which means line doing fair treatment to all the points. Scale must be chosen to give at least 50% of the graph in both of x- & y- directions. Physics revision site - recommended to teachers as a resource by AQA, OCR and Edexcel examination boards - also recommended by BBC Bytesize - winner of the IOP Web Awards - 2010 - Cyberphysics - a physics revision aide for students at KS3 (SATs), KS4 (GCSE) and KS5 (A and AS level). Percentage uncertainties for single measurements can be calculated using the equation in this video. Afterwards, use this data to calculate other quantities. Then draw a narrow column headed, S.No. (4) Clamp rule / ensure rule is vertical using a set square on the bench Each heading will have the name or symbol of quantity with it’s standard units in brackets of after slash such as “L /m” or “Temperature (K)”. The numerical labels must be regularly spaced. (5) Use of fiducial marker/pointer, Rejected: Do the experiment in a vacuum, switch the fans off, not just ‘use video’, light gates, Camera, High speed camera, Too fast, Time too fast, Time more swings , Time large no. A summary of the key points to include when answering questions about experiments. Booklet of questions were compiled from past paper questions from 2002 - 2009 from old scheme (This is a work in progress! (5) Difficult to judge end/start/ centre of swing/difficult to judge complete swing, Improvement: DO NOT panic if your data has some flaws; inform the supervisor and if he gives replacement of some instrument carry on or if he doesn’t, hit him with the same instrument!! Pearson Edexcel Level 3 Advanced GCE in Physics . Here you need to set a certain criterion for yourself. Lines thicker than half a small square are not accepted so I recommend a sharp lead pencil and a transparent ruler for this job. Just kidding. Improvement: (2) Board tends to slip/board not stable/supporting block can topple, Improvement: You will draw one single table with headings. Outline: No graph will be required. Could you explain question 2 for that please, or at least add the errors and such to the list here? (2) Friction at pulley For finding the percentage/absolute uncertainty, keep in mind the following rules: After calculations involving a given formula to find a certain value, the candidate is usually asked to ‘justify the number of significant figures‘ in the final answer to the value you were asked to calculate. Improvement: (2) Inconsistent bounce, Improvement: practice problem 3 A laboratory cart ( m 1 = 500 g) rests on a level track. AQA A Level Physics 7407 7408 Paper 3 Practical Questions and Mark Scheme. The following organisations have recently recommended these resources to support students who are learning from home during the Covid-19 crisis. (3) Rod falls sideways/not entering sand vertically. Parallax Error - What it is and how to minimise it. 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