GCSE Physics 9-4 Tuesday 12-05-2015 Adding Vectors Classwork We did the examples on the first page of this using scale diagrams on graph paper. You did it very well. We then started to go thorugh the HW and got up to question 4 a). We will go though the rest next lesson. Monday 11-05-2015 Graphs of Motion Classwork We went through the test on circuits. I gave out the list of stuff you need to know for the end of year exam. We did this task and went through it: A teacher paces backwards and forwards across the classroom twice. They walk at a constant speed of 1m/s. The room is 5m wide. Draw: a) a displacement-time graph b) a velocity-time graph c) a distance-time graph d) a speed-time graph We started these exam style questions. Homework Finish off the exam style questions and bring to tomorrow's lesson. Tuesday 05-05-2015 Test Classwork We did the test. Monday 04-05-2015 No Lesson (Bank Holiday) Tuesday 28-04-2015 Filament Bulbs Classwork We made some notes on filament bulbs - how they work and why the resistance increases with temperature. I demonstrated a carbon filament glowing when a current flowed through it, and the carbon oxidizing due to oxygen in the air. Monday 27-04-2015 Circuit simulator Classwork We finished going through the sheet from last lesson, and built models of the circuits using this program (click the 'download' button then run it). Some people then tried to do some calculations for this circuit and then made a model of it. Homework Revise for test next week. Tuesday 21-04-2015 Circuit Rules Classwork We went through these circuit rules. We did these questions and went through Q1-2 together. We will go through Q3 and 4 next lesson. Homework No homework, but please make a note that there will be an End of Topic Test on this stuff on Tuesday 5th May. Monday 23-03-2015 Recap questions, LED Classwork We did some recap questions on the material we have covered so far. We added to our notes on the diode to include the LED, and I demonstrated a string of LEDS only starting to conduct at a particular voltage. Homework Answer Q2 and Q6 on P174 and hand in tomorrow morning before reg so I can mark them for the lesson. Tuesday 17-03-2015 Thermistor, LDR, Diode Classwork We experimented with thermistors and saw how their resistance changed with temperature. I demonstrated the changing resistance of an LDR in different light conditions. We added to your notes with examples of electronic items that might use thermistors or LDRs. We made notes on the diode and its voltage-current graph. Monday 16-03-2015 Voltage-current graphs Classwork We did a practical and plotted voltage-current graphs for a bulb and a resistor. We then looked in more detail at the graphs for a bulb and a resistor, including negative voltages, and made notes. I demonstrated the V-I curve for a diode - more on this next lesson. Homework Read and make notes on P168-9 - in particular about thermistors and LDRs since we haven't talked about these yet. Here's a video about thermistors and a video about LDRs. Answer Q1 on P169 and bring to next lesson. Tuesday 10-03-2015 Measuring Resistance Classwork We did a practical to measure the resistance of four different resistors. We went through the questions on P165 that you did for cover work. Monday 09-03-2015 Cover Lesson Classwork Read and make notes on P164-5. Answer Q1-3 on P165. Read and make notes on P166-7. Answer Q1-3 on P167. If you finish quickly read P170-171 - you might remember some of this from Y7. Homework Complete this work and bring to next lesson. Tuesday 03-03-2015 More Sankey diagrams Classwork We went through the HW, and people corrected or re-did their Sankey diagrams. We started to talk about electrical resistance but didn't make any notes - we will start on this next lesson. Monday 02-03-2015 Efficiency and Sankey diagrams Classwork We made some notes on efficiency and did some example calculations. We discussed energy transfers in an electric fan and an electric hairdryer, and represented these with Sankey diagrams. We measured the energy input and useful energy output of a Lego winch system, and calculated its efficiency. Homework Answer Q1-2 on P157 and hand in tomorrow morning. Tuesday 24-02-2015 More on payback Classwork We did a quiz on the stuff from P158. We finished off going through the payback time task from last lesson. We highlighted the difference between solar cells (which generate electrciity) and solar water heating panels (which heat water). Monday 23-02-2015 Payback time Classwork We went through the test. We made some notes about payback time (see textbook). We did this task - we will finish going through it next lesson. Homework Read and make notes on P158 Be ready for a quiz next lesson. Tuesday 10-02-2015 Nothing Classwork Since there were only a couple of people in the lesson we just built some electrical circuits as recap from Y7 work. There's nothing to catch up on if you weren't here. Monday 09-02-2015 Test Classwork We played a game of bingo to recap on key ideas. We did the test. Homework No homework. Monday 02-02-2015 Tin can experiment Classwork We planned and carried out an experiment similar to that on P144. Homework Revise for test next Monday on this stuff. Tuesday 27-01-2015 Thermal radiation - surfaces Classwork We went through the HW, and then looked at a real demonstration of Leslie's cube. The matte black surface emitted the most thermal radiation, and the shiny metal surface emitted the least. We also watched a demo similar to that on P145 to demonstrate absorption of thermal radiation by different surfaces. The matte black surface warmed up faster than the shiny metal surface, because it absorbed more thermal radiation. We added to our notes from last lesson. Monday 26-01-2015 Thermal radiation Classwork We did a starter question to recap on adding forces. We made notes on thermal radiation, and felt the thermal radiation from a hot sheet of metal. Homework Answer Q3 on P145 and bring to next lesson. Here is a short video of an infra-red sensor being used. There are some interesting videos on youTube using thermal imaging cameras. Try F1 cars or hot and cold liquids. Tuesday 20-01-2015 Conduction & convection Classwork We went through Q1 of the HW in detail. We looked at some more demos of convection, and watched a few videos that people made at home last night - well done for putting the effort into making those. We also used a helium balloon in the lesson to show hot air rising from a radiator. Monday 19-01-2015 Convection Classwork We demonstrated that hot air rises using paper propellors balanced on pencils. A bit like this but made of paper and using the hand as the heat source rather than a candle. We made some notes on convection and also saw a demo of convection in water. Homework Answer P1-2 on P139 and hand in tomorrow morning before registration. Tuesday 13-01-2015 Conduction in metals Classwork I gave some feedback on the HW and we discussed why some of the proposed experiments to compare inslulating boot linings would not work. We discussed why metals are good conductors of heat (but also found that some of the very best conductors of heat are not metals - some are quite newly discovered materials made from carbon). Monday 12-01-2015 Thermal conduction Classwork We watched a demonstration that compared how well different metals conducted heat. We made notes on conduction. Homework Read P136-7 and add to your notes if necessary. Answer Q1-2 and hand in before reg on Tuesday. Tuesday 16-12-2014 Bimetallic Strips Classwork We discussed some ideas for different uses for bimetallic strips. Here is a slightly long and boring video about bimetallic strips in thermostats - you don't have to watch the whole thing, but parts of it are interesting, like when he unwinds the coiled up strip so you can see how long it is. Also I showed you this video in the lesson, which again uses a coiled bimetallic strip. Monday 15-12-2014 Thermal expansion Classwork We did the ball and ring experiment and heated a bimetallic strip. We made some notes on the thermal expansion of solids. Homework Think of a use for bimetallic strips, other than for fire alarms and turning air conditioning on and off. Tuesday 09-12-2014 Rate of evaporation Classwork WE Looked at your graphs and considered the conclusions that could be drawn from them. We made some notes on the factors that affect the rate of evaporation of a liquid. Monday 08-12-2014 Cooling by evaporation Classwork We discovered why evaporating liquids cool things down, and investigated the cooling effect of different liquids under different circumstances. If you missed the lesson, watch this video. We collected some data to calculate the specific latent heat of fusion of water - we will use this next lesson to complete the calculation. Homework Plot both graphs on the same axes and write a short conclusion (do that on the graph paper). Bring to next lesson. Tuesday 02-12-2014 Specific Latent Heat of Fusion & Vaporization Classwork We did these questions about specific latent heat. We discussed where this latent heat energy goes when stuff is frozen in your freezer - if you get a chance, feel the pipes at the back of your freezer and you will find that they are warm. Monday 01-12-2014 Measuring specific heat capacity Classwork We did a practical to measure the specific heat capacity of aluminium or brass. We evaluated the result and compared it to the true values, and tried to explain the variation between the measured and the true values. Homework Watch and make notes on this video and P132-133 of the textbook. Bring your notes to next lesson so I can see them. Tuesday 25-11-2014 Specific Heat Capacity Classwork We did some questions on specific heat capacity - we will go through the last few questions next lesson. We will also do an experiment on specific heat capacity next lesson. Monday 24-11-2014 Heating and Cooling Curves Classwork We tried to compress syringes containing sand, water and air. We made notes on heating and cooling curves. We did a practical to plot a cooling curve for steartic acid, and determined its freezing point. Homework Watch and make notes on this video using P128-9 of your textbook to help you. Bring your notes to next lesson. Tuesday 18-10-2014 States of Matter Classwork We did some recap on the properties of different states of matter and their particle arrangement. We will go through the heating curve next lesson, and I'll get a syringe full of water to try to compress. Monday 17-11-2014 No Lesson Classwork There was no lesson because of the birds of prey talk. Homework No homework. Tuesday 11-10-2014 Heating Curves Classwork We predicted the shape of the heating curve or water, then did a practical to find out what it really looks like. We will finish the graphs and analyse them next lesson. Monday 10-11-2014 NIII, Terminal Speed Classwork We went through Newton's Third Law and Terminal Speed. It turns out you're not supposed to do terminal speed till next year, but never mind. Homework Please go through your test and do corrections in a different colour. Can everybody please bring your corrected test to next lesson where we will go through any areas of difficulty. Tuesday 04-10-2014 Test Classwork We did the test. Next lesson we will do Newton's Third Law. Monday 03-11-2014 Topic Recap Classwork We did a revision quiz to test our understanding of the topic. Homework Revise for test tomorrow. Tuesday 14-10-2014 Newton's Second Law Continued Classwork We looked at your graphs and considered the meaning of the line crossing the x or y axis at different points. We answered these questions on Newton's First and Second Laws and went through the answers. Monday 13-10-2014 Newton's Second Law Classwork We introduced Newton's Second Law (F = ma). We did a few calculations, then did a practical to measure the acceleration of a trolley. Homework Plot a graph with force on the x-axis and acceleration on the y-axis. Hand in tomorrow morning before registration. Tuesday 07-10-2014 Scalars and Vectors We went through key ideas about scalars and vectors from the homework. We finished off the second page of the parallelogram method worksheet, and considered adding velocities for aeroplanes flying in crosswinds. Monday 06-10-2014 Parallelogram Method Classwork We went through lots of examples of adding forces and displacements using this worksheet. Homework Watch and make notes on this video about scalars and vectors (it mentions momentum at the end - you don't need to worry about that till Y11). Make sure your notes include the table of scalars and vectors in your notes. Bring your notes to next lesson.
Tuesday 30-09-2014 Resultant Forces Classwork We went over key ideas from the homework I introduced the parallelogram method for adding two forces at an angle to each other. We will practise this more next lesson.