Science Literacy 2006 school release materials - NAP

NAP – SCIENCE LITERACY 2006 released items PRACTICAL TASK year 6Experiment 2:Checking the effect of changing the length of the stringYou will collect data to test this idea (hypothesis):‘The length of the string of a pendulum does not change the number of swings in a given time.’You will release the two-clip bob using two different string lengths.1 Using the longer (40 cm) length of string, hold the bob up, with the stringstretched out, so it is level with the pencil.2 Release the bob and record how many times the pendulum swings in 10seconds. One student says ‘go’ at the start of 10 seconds and ‘stop’ at the end.3 Repeat this two more times, so that you have three results for the long pieceof string.4 Record all of these results in Table 2.5 Now change to the shorter (20 cm) length of string and repeatthe experiment releasing the two-clip bob.6 Record your results in Table 2.Table 2: Changing the length of the stringNumber of swings in 10 seconds (two-clip bob)Trial 40 cm piece of string 20 cm piece of string123Before you go on make sure you have recorded all of your results.You will need to use your results when you work by yourself in Part B.You have finished Part A.Do not turn the page until you are told to do so.© MCEETYA 2006 29