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Phy_Alternative Practical Paper 6_without Annotations

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  © OUP: this may be reproduced for class use solely for the purchaser’s institute IGCSE Sample Examination PaperPHYSICS PAPER 6  Alternative to Practical   1 hour 15 minutes Candidate Name: The questions in this sample were taken from Cambridge IGCSE Physics 0625 Paper 6.Question 1: May 2008 Q5Question 2: November 2007 Q5Question 3: May 2008 Q3Question 4: November 2007 Q3Question 5: November 2008 Q5 Answer questions on the Question Paper.Answer all  questions.  2 © OUP: this may be reproduced for class use solely for the purchaser’s institute 1 An IGCSE student has carried out a timing experiment using a simple pendulum. She plotted a graph of T  2  /s 2  against l  /m. T   is the time for one swing of the pendulum and l  is the length of the pendulum. The graph is shown below. 000.2 1 2 3 4 5 2  /s 2 0.4 0.6 0.8 1.0 1.1 /m a i Determine the gradient G  of the graph. Show clearly how you obtained the necessary information. You could use a labeled sketch of the graph if it helps. ii Calculate the acceleration  g  of free fall, in m/s 2 , using the equation  g   󰀵  4   2   ____   G   iii The student could have calculated the acceleration of free fall  g  from just one set of readings. State the purpose of taking sufficient readings to plot a graph. [5]   3 © OUP: this may be reproduced for class use solely for the purchaser’s institute b The student next studies the relationship between the mass m  of the pendulum and the time for one swing T  . The readings are shown in the table below. m  /   g T   /  s 501.581001.601501.612001.572501.58 i Suggest two variables that must be kept constant to make the experiment a fair test. ii Study the readings in the table, and copy and complete the following sentence. Within the limits of experimental accuracy, the readings show that the mass m  of thependulum [3] [Total: 8]  4 © OUP: this may be reproduced for class use solely for the purchaser’s institute 2 a  An IGCSE student is investigating the differences in density of small pieces of different rocks. She is using an electronic balance to measure the mass of each sample and using the ‘displacement method’ to determine the volume of each sample. The diagram below shows the displacement method. 1008060402010080604020cm 3 cm 3 V  1  V  2 rock sample i Write down the volume shown in each measuring cylinder. These volumes are V  1  and V  2 .  ii Calculate the volume V   of the rock sample. iii Calculate the density of sample A  using the equation  density   󰀵   m   __    v  where the mass m  of the sample of rock is 109 g. [4]
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