Physics AQA Paper 1 and 2 required practical questions. Why lose rest of the marks due to 2 marks only? Parallax Error - What it is and how to minimise it. moulds, Error: What is the problem with this experiment? Thanks a lot hey. In part c(ii), you are asked to calculate a value ‘d‘, using the formula: In c(iii), you are asked to justify your number of significant figures for value of ‘d‘. Join the mailing list for exclusive news and offers - you can unsubscribe at any time, Accuracy, Precision, Error and Uncertainty, Percentage Uncertainty in Single Measurements, Percentage Uncertainty in Multiple Measurements, Control Variables, Fair Tests and Causation, A Level Physics Online Recommended for Home Learning, Get 10% Off Primrose Kitten Online Courses, for 10% off your purchase of Biology, Chemistry, Maths or Psychology courses. You have to know how to present your data in an appropriate manner. Read more. How many marks we will lose if we get the very first part of the question WRONG and it’s values are used in remaining parts of question i.e (Table and Graph)? Info. Physics A-Level: Downloads The most comprehensive compilation of past papers grouped in categories. Read more. However, setting a criterion like <50%  difference for the relationship to be valid is totally stupid. Lets say, I was given to 3sf. How can I modify it to take better readings? Error: it is very use full description for all guys for ever if they understand to it, Very Helpful.. An ideal experiment should have just one variable altered while everything else is controlled. A thing to keep in mind is that there is no specified criterion to judge the validity of a relationship; it is entirely up to the the candidate to set it. The example question involved only ONE measured quantity; what if there are more than one? Simple. This video looks at 'Absolute Uncertainty' which is really important as you complete practical work at A Level for Physics, Biology and Chemistry. Booklet of questions were compiled from past paper questions from 2002 - 2009 from old scheme (This is a work in progress! All the raw readings of a particular quantity should be recorded to the same number of decimal places which should in turn be consistent with the precision of the measuring instrument. in raw data. (1) Difficult to measure diameter because (object) is flexible/not circular. (2) Labels get wet/ink runs, Improvement: (3) Uncertain starting position, Improvement: tape to ruler, hang weights off end, clamp wire. Error: All exam boards . (2) Method described to secure board/block/support e.g. Our AS and A-level Physics specifications will help you to inspire students, nurture their passion for the subject and lay the foundations for further study and the workplace. ** Below is the animation, showing: How to use Vernier Calipers? (1) Use larger pulley (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. use a long string/pulley and weights* Writing “L m” or “temperature K” is not accepted. (1) Method to ensure force is parallel to ruler e.g. Teach with confidence, the Student Books for Year 1 and Year 2 are approved by AQA. Thank you very much! This is a walk through of a students paper 3 (Part 1) that gained the full 20 marks. Use the full space provided. (3) Mark distance with lines on ramp (to eliminate parallax) Preview this quiz on Quizizz. Practical skills are assessed in a timetabled practical examination. Questions organised by topic, past papers. I am passing P3 tomorrow. Lines must not be kinked. Greek astronomy 3. (6) Use thinner string (1) Difficulty in releasing the object due to (applied force etc) Read this book using Google Play Books app on your PC, android, iOS devices. You will get accuracy marks if you actually write the values which are there on the equipment instead of making your own and if you did the experiment as accurately as supervisor. Error: Scale markings should be no more than three large squares apart so to be on the safe side label all the In September 2015, practical work in A-Level Physics stopped being assessed through examination – but was still a core part of the curriculum. A ticker timer can be used to investigate the velocity of an object. (4) Move by increments. Created: Jan 6, 2017. Author: Created by TRJ. These values of L you have cover almost the whole range of values possible from minimum to maximum. First you will need to revise the equation of linear lines if you don’t remember them. Have any questions? If you thought about these points while performing, you would have definitely no problem dealing with this part of the question. Author: Created by owfm. Rejected: Voltmeter not accurate enough. for ‘d‘ that you give MUST be equal to 2 s.f or 1 more (i.e. (2) Method to read force at detachment e.g. Could you explain question 2 for that please, or at least add the errors and such to the list here? 2 of 149 This is the Physics version of this practical handbook. We really hope it proves useful. (1) Sensible method to ensure ruler vertical The point must be plotted sharply. This page is a good resource for students who want good quality problems to practice with when studying for tests and exams. Download for offline reading, highlight, bookmark or take notes while you read A-Level Practice Questions Physics (Higher 2). But it is not possible that all points lie on the line. 3sf or one more sf, i.e. 'Percentage difference' gives an indication of how close your experimental value is to the accepted true value. Either: Check correct read-off from a point on the line, and substitution into y = mx + c. Read-off must be accurate to half a small square. Get it right from the start and your practical experiments will be a breeze. (1) Method to ensure same section of board used in each experiment (e.g. This critical thinking is very important to do the last part of this question, but the observations are made while doing experiment and setting up the apparatus. Early astronomical measurements 4. Again significant figure of the raw data should represent the precision of the instrument used, and s.f of any calculated value from those data should be in same or one more s.f – correct calculation carries one mark! There are two questions in each paper. The graph is a straight line. Created by teachers for Physics revision. (3) Difficult to judge end point (2) Put coloured paper behind (object) /Description of method of reducing parallax error requiring additional equipment, e.g. I don’t mean that don’t do the practical accurately but I mean to say that don’t waste extra time in making it more accurate and leaving no time to complete rest of the paper. However, if you are to calculate resistance from p.d and current, and the p.d was up to 2 significant figures while current was up to 3 significant figures. In the part following it, you are asked ‘Explain whether your results support the suggested relationship’. Student Book Help students build … (2) Inconsistent bounce, Improvement: (1) Hard to see water surface due to refraction effects/ meniscus effect Error: More accurate voltmeter/ Parallax error/zero error on meters/heating effects of wire. Find the absolute uncertainty & percentage uncertainty in c. absolute uncertainty in c = 0.2 + 0.3  = 0.5, percentage uncertainty in c = 0.5/7 * 100 = 7.14% (up to 3 sf. This allows you to collect repeatable and reproducable results that allow you to see the link between two separate factors. Throughout this question you should think: Why I am feeling that this is difficult? viewed through ruler/parallax error in d (4) Wait until temperature reaches a maximum before reading, Rejected: Switch off fans to reduce convection/Just “weigh water”/ different starting temperatures of water; uneven temperature distribution in beaker/ parallax errors in reading volume or temperature/use of lid/heat loss in warming bowl/cup/draughts/heat loss to surroundings/use more accurate thermometer/thermometer not precise enough/not just ‘digital thermometer’. Learn how your comment data is processed. (2) Friction at pulley Preview and details Files included (1) docx, 748 KB. Ask yourself whether the improvement is practical or not. (2) Thermometer with specified better precision, e.g. Thread starter Mathemagical; Start date May 30, 2015; May 30, 2015 #1 Mathemagical . First draw a rectangle covering whole of the space and then draw a upper row relatively wide. Hopefully it is useful for your own revision. The axes must be labeled with their appropriate units (same as the headings of table). So even if your practical work is not very accurate you should move to the tables, graph and working without wasting time in making it more accurate. Messages 144 Reaction score 137 Points 53. Then the number of s.f. In this question, first set up the apparatus in exactly the same manner as shown on the question paper. (2) Object does not swing freely/ friction between pivot and object Learn more about the 'lobf' and the 'walobf' in this video (not proper physics terms). This critical thinking is very important to do the last part of this question, but the observations are made while doing experiment and setting up the apparatus.”. (1) Masses hit each other Common answers that are rejected by mark scheme : If clay/plasticine/heavy object is used in the experiment, wind movement doesn’t affect it anymore. Improvement: Reject reaction time ideas/difficult to release from the same point each time. (1) Use coloured liquid Rejected: The difference you can take here is 15, so the readings of L you’ll take will be: 15 cm, 30 cm, 45 cm, 60 cm, 75 cm, 90 cm. We include observations of the night sky and demonstrations of the models which have been proposed to explain them. Either discard it from your calculations or identify it on your graph. However, some general errors and improvements are given below: (Pro-Tip: The first error and improvement works for ALL experiments. (2) Board tends to slip/board not stable/supporting block can topple, Improvement: Different Experiment Scenarios (and their potential errors and improvements): Error: Physics Practical Paper 3 Notes and Tips. The Copernican r… NEW: Revise for your January Mock Exams. (4) Oscillations die out quickly/ heavy damping (Light object only) Here you need to keep in mind that when you are calculating a certain value, its significant figures must be equal to or 1 more than the significant figures in the raw data. (1)Protractor “wobbles” when being held by hands/ Difficulty in measuring θ owing to container not perfectly right angled (curved) at the bottom/difficult to line up protractor/horizontal line of protractor not on table