1 lesson Circular motion Centripetal force and the idea that velocity changes but not speed. Demonstration: The ball attached to the meter. Worksheets and PowerPoint’s available on the S-drive. End of Unit Test 1.5 Effect of Forces Time Frame Topic Cur ref objectives Activities Resources Assessment 2 lessons Effects of Forces 1.5a Go over the importance of balanced forces. that a force may produce a change in size and shape of a body. Plot extension/load graphs and describe the associated experimental procedure. Describe the ways in which a force may change the motion of a body. Find the resultant of two or more forces acting along the same line recall and use the expression F = kx Law experiment. This is a good opportunity to reinforce graph drawing skills. Worksheets and PowerPoint’s available on the S-drive. 6 lessons Forces – Turning effects 1.5 (b) 1.5 (c) 1.5 (d) Describe the moment of a force as a measure of its turning effect and give everyday examples describe, qualitatively, the balancing of a beam about a pivot. Apply the idea of opposing moments to simple systems in equilibrium. that, when there is no resultant force and no resultant turning effect, a system is in equilibrium Perform and describe an experiment to determine the position of the centre of mass of a plane lamina. Describe qualitatively the effect of the position of the centre of mass on the stability of simple objects Experiments involving balancing a rule on a pivot with a variety of different weights should be used here. Centre of mass A variety of shapes of lamina should be used in experiments to find the centre of mass. Standard shapes (circle, square, etc.) can be used first and then ‘non-standard’ shapes for which the position of the centre of mass is not so obvious. Extension students can be challenged with a Video on the network ‘Machines and Moments’ Worksheets and PowerPoint’s available on the
lamina that has its centre of mass in a space (e.g. hole in the lamina). 2 lessons Pressure 1.7 Relate (without calculation) pressure to force and area, using appropriate examples • Describe the simple mercury barometer and its use in measuring atmospheric pressure • Relate (without calculation) the pressure beneath a liquid surface to depth and to density, using appropriate examples • Use and describe the use of a manometer • Recall and use the equation p = F/A • Recall and use the equation p = hρg Calculate the pressure various objects exert Demonstrate the peeing can. Demonstrate a barometer/ manometer. If you have not already you can show the collapsing can using a vacuum pump or collapsing soft drink can using steam and cold water. Worksheets and PowerPoint’s available on the S-drive. 1-2 lesson Gas pressure and volume Relate the change in volume of a gas to change in pressure applied to the gas at constant temperature. Use p1v1=p2v2 They should have already covered p1/T1=p2/T2 so should be able to use p1v1/T1=p2v2/T2 Understanding of the Kelvin scale and absolute zero. A direct measuring Boyle’s Law apparatus can be used here. Useful graph plotting If you have not already you can show the collapsing can using a vacuum pump or collapsing soft drink can using steam and cold water. This is a good opportunity to reinforce graph drawing skills. Worksheets and PowerPoint’s available on the S-drive. Use of data loggers to record data from demos and students to use data in Excel to produce graphs. A good simulation on PHETT Physics on the network to get ideal results. End of Unit Test
How houses are insulated against heat loss 3.3 Sound Time Frame Topic Cur ref objectives Activities Resources Assessment 3 lessons sound 3.3 Describe the production of by vibrating sources. Describe the longitudinal nature of sound waves. State the approximate range of audible frequencies. Show an understanding that a medium is required in order to transmit sound waves. Describe an experiment to determine the speed of sound in air. Relate the loudness and pitch of sound waves to amplitude and frequency. Describe compression and rarefaction Basic idea of resonance Use a variety of musical instruments to introduce this section. A signal generator and loudspeaker can be used to investigate the range of audible frequencies. A bell in a bell jar that can be evacuated can be used to show that a medium is required for the transmission of sound (at the same time showing that light travels through a vacuum). Use of a C.R.O. and microphone gives a visual picture of amplitude and frequency. Extension candidates can analyse the C.R.O. traces in more detail. Worksheets and PowerPoint’s available on the S-drive. 1-2 lesson Uses of sound Describe how the reflection of sound may produce an echo. – Sonar Ultrasound You could take the students outside to measure the speed of sound using an echo. Worksheets and PowerPoint’s available on the S-drive. 3.1 Wave properties Time Topic Cur ref objectives Activities Resources Assessment
3 lessons EM spectrum Describe the main features of the electromagnetic spectrum and state that all e-m waves travel with the same high speed in vacuum. Use the term monochromatic Include plenty of examples to show students that they already have much general knowledge regarding the uses of electromagnetic waves opportunity for research project and students to present ‘uses and dangers’ of EM waves in ppt to form class notes End of Unit test or End of year exam 1-2 lessons Revision for end of Year 9 Exam General revision to remind Year 9 what has been covered this year. Personal revision, revision tests, making revision notes, open book tests, revision posters and class discussion. Worksheets and PowerPoint’s available on the End of year exam 1-4 lessons Radioactivity You should have enough time to recap/introduce the structure of the Atom. Alpha, Beta and Gamma. See Year 10 Scheme of work. Worksheets and PowerPoint’s available on the S-drive.