GCSE Physics 9.1 Wednesday 15-06-2016 More static charge Classwork I showed you the light bulb that I ran really hot last lesson. The inside of the glass bulb was coated in a thin layer of tungsten metal which was shiny, especially when I broke the bulb and we looked at the inside of it. I demonstrated a few more things with levitating bits of aluminized plastic, and we added to our notes. Homework Research one danger of sparks arising from static electricity. Max 1 side A4. Due Friday morning. Monday 13-06-2016 Going through exam Classwork We went over the end of year exam. I demonstrated this toy and we started to look at quite a lot of the physics involved in making the metallic coated plastic and also how it levitates. We started to make notes on static electricity. The stuff we will be learning in this topic can be found here and here. Monday 23-05-2016 Circuits revision Classwork We did a kahoot quiz that had a few extra bits that you don't need to know about (but they are interesting). You did some past paper questions - we went through about half of them and the answers are at the end of this pdf if you want to check the rest. I've removed Q4c) as you haven't learned about that yet. Monday 16-05-2016 Efficiency Classwork You did a long question about a crane that recapped on ideas about work and power and led onto ideas about efficiency. We went over the two formulae for efficiency and showed that they are equivalent. We looked at a few electrical appliances and tried to identify useful energy output and wasted output. We discussed 'wasted' energy again. We played MFL articulate. REMINDER: no test for this topic now - we will just work through some questions in class. Wednesday 11-05-2016 Spring Energy Classwork We made notes on the formula for spring energy, then did quite a few tricky calculations. We looked at situations where a spring fires an object (or the spring itself) and calculated the speed it is fired at and the height it might reach. We then did this for a real spring, and it almost reached the predicted height (although not quite due to friction and air resistance). Next lesson we need to do energy efficiency, then we are pretty much finished with this topic. Monday 09-05-2016 Power, Springs Classwork I gave out the revision list for the end of year examination. We finished off the questions from last lesson found here. We derived the formula: power = force x speed which can be useful. We tried to observe the transit of Mercury using a pinhole. See this demonstration which shows a pinhole being used to observe an eclipse. The greater the distance between the hole and the screen, the bigger the image of the sun will appear. We made notes on springs and their uses, and calculated the spring constant of two different springs. Monday 02-05-2016 Bank Holiday Wednesday 27-04-2016 Work and energy - examples Classwork We made notes on "work done" (for those who missed the lesson) and did an example calculation for dragging a box across a desk. We discussed and made notes on the energy that is 'wasted' as heat by friction in most systems. We also discussed 'heat engines' which are not on they syllabus, but are interesting. For theory on heat engines watch this and for examples see Hero's Engine and the Stirling Engine. Homework If you missed the cover lesson, please read P40-41 and answer the quetions on P41. Bring to next lesson. Then next lesson we can go through these and everyone should be in the same place. Monday 25-04-2016 Cover Lesson Classwork You marked and went over the sheet on rollercoasters. You made notes on "work done" and answered the questions on P41. Homework Watch the first half of this video - stop when he starts talking about asteroids. Add to your notes where necessary. Wednesday 20-04-2016 Rollercoasters Classwork We went through the waves test and discussed ways of checking whether two things are proportional to each other. I gave out the list of stuff you need to know for this topic. I demonstrated the principle of how most rollercoasters work using a marble track like this. You started this sheet. Homework Finish both sides of the rollercoaster sheet and hand in tomorrow morning before registration. Monday 18-04-2016 GPE Classwork You did some estimation questions about kinetic energy. We went over the HW by putting people's answers on the board. We made notes on GPE and did some example calculations. We also started to look at transfers from GPE to KE (e.g. when an oject is dropped). You started to answer Q1 on P45. We will finish these questions next lesson. Wednesday 13-04-2016 Kinetic Energy Classwork We did some recap on energy, then looked at kinetic energy in more detail. You made notes on the formula for kinetic energy, and we did a quick example calculation. Homework Answer Q1-2 on P47 and bring to next lesson. NOTE: we haven't done GPE yet - the answer to 2 b) i) is 98J. You may find this video useful, and it links to some worked examples. Monday 07-03-2016 Wavefronts and rays Classwork We went over the HW and corrected your diagrams. You did an experiment with a triangular prism, and we made notes on dispersion. You made notes on wavefronts and rays - more on this next lesson. Wednesday 02-03-2016 Refraction Classwork You predicted and then plotted the path of a ray as it refracted through a perspex block. We made notes on refraction. Homework Read P100-101. Answer Q1-2 on P101. Hand in tomorrow AM before registration. Monday 29-02-2016 Radiotherapy, radiation dose, reflection Classwork We went over your HW on radiotherapy. You made notes on ratiation dose and the sievert. I showed you this chart of radiation exposure. You did an experiment to investigate the reflection of light at a plane mirror. Wednesday 24-02-2016 CT Scans Classwork We played spot the difference. I showed you this video and we made notes on CT scans. We made brief notes on sterilization (see P85) and why gamma rays and x-rays are a good choice due to their penetrating ability. Homework Make notes on radiotherapy using P85 and this video. You need to explain how using lots of weak beams of radiation minimizes the damage to healthy tissue surrounding the tumour. Note that x-rays and gamma rays can both be used for radiotherapy. Bring your notes to next lesson. Monday 22-02-2016 EM Spectrum Dangers Classwork We played waves bingo. You made notes on the dangers of different parts of the EM spectrum. You made notes on ionizing radiation, and which parts of the EM spectrum are ionizing. We looked in a bit of detail at how x-rays are used to image broken bones. I told you that we will be doing a test on waves in the last week of this term. Wednesday 10-02-2016 Electromagnetic Spectrum Classwork I showed you this video about the electromagnetic spectrum. You did some research on the electromagnetic spectrum: What is the electrmagnetic spectrum? What are the parts of the electromagnetic spectum in order? Find three uses for each part of the parts of the elecrtomagnetic spectrum. Find five similarities and five differences between different parts of the E-M spectrum. Homework Answer Q1-4 on P79. Hand in tomorrow morning before registration. Monday 08-02-2016 Waves calculations Classwork We went over the questions you did for HW. I noted the importance of laying your work out clearly, and showing units in your working. I demonstrated laser light diffracting through a narrow slit, and we discussed the focussing of water ripples, light, sound and radio waves using curved reflectors. Here is a sound reflector and a light/infra-red reflector (DON'T TRY THIS AT HOME) and a radio wave reflector. Wednesday 03-02-2016 Waves calculations Classwork We looked at wave calculations and did some calculations for the waves in the ripple tank. Homework Answer Q1-7 on the sheet I gave out. Due before 9:00am on Friday. Monday 01-02-2016 Wave properties Classwork We went over the notes that you started to make on P68-9 and continued these. We covered wave properties, the relationship between period and frequency, and the relationship between speed, frequency and wavelength. We did quite a few examples, then you started the questions on P69. We will finish these next lesson. Wednesday 27-01-2016 Waves Classwork I did a number of demonstartions of wave phenomena using the ripple tank. I demonstrated transverse and longitudinal waves using a slinky and aslow motion camera, and we made notes on them. Homework Answer Q1-2 on P67. Hand in tomorrow morning before 9:00am. Monday 25-01-2016 Test & Waves Classwork We went over your test. If you want a blank copy for corrections then collect one from me next lesson. If there are any questions/areas you are still struggling with, come and find me. I introduced the new topic - waves. I demonstrated a number of wave phenomena using a ripple tank. You started to make notes on wave properties using P68-9 - we will continue this next lesson. Wednesday 20-01-2016 Test Classwork We did the test on electricity. Homework No homework. Monday 18-01-2016 Diodes, LEDs, recap Classwork We finished our notes on diodes, and I demonstrated an LED as well. We made notes on the reason why the resistance of a light bulb filament increases with temperature. We did some recap on a few things to prepare for the test on Thursday. Wednesday 13-01-2016 V-I Curve for Bulb Classwork You plotted a graph of your results, and also calculated the resistance at different currents. We analysed the curve, and discussed how and why the resistance of the bulb changes at higher currents. I demonstrated the V-I curve for a diode - we will make notes on this next lesson. Homework Revise for a test on electricity on Wednesday 20th January. Here is the list of stuff you need to know. Monday 11-01-2016 Voltage-Current Characteristic Curves Classwork You asked each other (and answered) a series of questions about four circuits that you made up. I demonstrated an experiment to plot a V-I graph for a resistor, and we analysed the graph. You collected results to plot a V-I graph for a bulb, and started to plot the graph. Monday 07-12-2015 Thermistors Classwork You made notes on thermistors. You did an experiment to create a calibration curve for a thermistor. Some of you extrapolated to predict the resistance at 100°C. Wednesday 02-12-2015 Current, charge and time Classwork I gave out the list of stuff you need to know for this topic. You tried to calculate the current in a tricky parallel circuit. You made notes on the relationship between charge, current and time, and did some example calculations. Homework No homework :( Monday 30-11-2015 Circuit calculations & simulations Classwork We went over a couple of questions from the HW (but not all). You found the voltage and current at different points in these circuits. Then you built the circuits using this simulator to check your answers. Wednesday 25-11-2015 Solving problems Classwork We used the circuit rules we have come up with so far to answer a few challenging questions. Homework Answer these questions and hand in tomorrow morning before registration. If you haven't finished after spending 30 minutes on them, then stop and just hand in what you have done. Monday 23-11-2015 Investigating current Classwork You did an experiment to investigate current in series and parallel circuits, and verified the rules we learned last lesson. You investigated voltage in series and parallel circuits, and we started to work out the rules for voltage. Wednesday 18-11-2015 Resistance and Voltage Classwork We did a few quick recap questions on current in parallel circuits. We made brief notes on resistance, voltage, and Ohm's Law. Homework Answer the questions on P167 (leave out 3b). Hand in tomorrow morning before registration. Monday 16-11-2015 Current Classwork We went through the test. If any issues remain, please come and find me and I will explain. We made a note of some circuit symbols you need to know. You predicted how bright some bulbs would be in different circuits, and we tested this. We made some notes on current in series and parallel circuits using this circuit simulator to help visualise. Wednesday 11-11-2015 Test Classwork Do the test. Homework No homework. Wednesday 04-11-2015 Forces and braking Classwork You will be given the answers to the questions you did last lesson. Check your answers and try to correct any mistakes. When you have finished, answer the questions on P35 on terminal velocity and check your answers. Homework Revise for test next Wednesday. Wednesday 14-10-2015 Scalars & vectors Classwork We made notes on scalars and vectors, and made a table with examples of scalar and vector quantities. Homework Revise for the test in the first week back after half term. Monday 12-10-2015 Terminal velocity Classwork We went over terminal velocity, and annotated a speed-time graph for a parachutist. We also looked at terminal velocity in the context of a car (or scooter) reaching its top speed. You worked through Q1 and Q3 on P35. I demonstrated a ball bearing reaching terminal velocity in a cylinder of liquid, which we will analyse next lesson using the slow motion camera. I gave out the list of stuff you need to know for this topic. NOTE: the test will NOT cover Forces and Braking, or the first item in Resultant Forces (about equal and opposite forces). Wednsday 07-10-2015 Investigating Newton's Second Law Classwork We went through the last two questions from the sheet from last lesson. You did this practical to investigate Newton's Second Law. A few people need to finish off their graphs - we will do this at the start of next lesson and discuss what you found. Homework Watch this video from 3:05 onwards and use P34-5 to make notes on Terminal Velocity. Bring your notes to next lesson. Monday 05-10-2015 Newton's Second Law Classwork We went over Newton's First Law, which you made notes on for HW. We pretty much worked out intuitively what Newton's Second Law would be. We did some simple calculations using F = ma for a man and a boy pushing a trolley and a car. You answered the questions on this sheet and we went through everything up to Q6 on NII. Wednesday 30-09-2015 More tangents Classwork We did this sheet. The ideal answers were: 2a) 0.8m/s, 2b) 2.2m/s, 4a) -3m/s², 4b) -18.75m/s², 5) 6075m We went through Q1 on P11 together (the one about the oil drops). Homework Make notes on Newton's First Law using this video and P14 of the textbook. Bring your notes to next lesson. Monday 28-09-2015 Graphs and formulae Classwork We wemt through the HW in detail - it was quite tricky. We learned a new formula for acceleration: a = (v-u)/t We practised a few examples of using the formula, then did Q6 on P10 and Q1-2 on P11. I also gave out this sheet which we can do at the start of next lesson. Remind me to go through Q1-2 on P111 next lesson. Wednesday 16-09-2015 Tangents, terminal velocity Classwork We finished off this sheet and learned how to calculate the gradient of a curve at a point using a tangent. We discussed what would happen if an object fell from a great height, then used a slow motion camera to investigate a paper shape falling. We will make notes on terminal velocity next lesson. Homework Answer Q2-4 on P10 and hand in tomorrow morning before registration. For Q3 you can draw a tangent *very lightly* on the book in pencil, then rub it off afterwards. Monday 21-09-2015 Ticker Timers Classwork We plotted a distance-time graph and the class gave feedback on one graph. We will complete that sheet next lesson when we learn about finding the gradient of a curve. We did an experiment with ticker timers, and investigated a falling ball of plasticine. We will find out what happens if it's dropped from higher up next lesson... Wednesday 16-09-2015 Speed-time graphs and velocity-time graphs Classwork We worked through Q1&2 of this sheet. We then started to make notes on what the area under a speed-time graph represents. Homework Watch this video from 7:01 to 9:15 - this shows how to calculate the area under a more complicated speed-time graph. Add to your notes that we started in the lesson. The gradient of a speed-time graph gives you the acceleration in m/s². Watch the same video from 1:50 to 5:15 and make notes on this. We will do examples of these next lesson. Monday 14-09-2015 Velocity, speed-time graphs Classwork We quickly went over the HW. We made some notes on displacement and velocity. We started to interpret speed-time graphs, and translate between distance-time graphs and speed-time graphs. We will do more on this next lesson.
Wednesday 09-09-2015 Displacement-time graphs Classwork We calculated the average speed of a jouney from a distance-time graph. We started to make notes on displacement-time grahps, and how they differ from distance-time graphs. We acted out a few displacement-time graphs, and saw that the gradient of a displacement-time graph can be positive or negative. Homework Complete both sides of this worksheet and hand in tomorrow morning before registration. Monday 07-09-2015 Distance-Time Graphs Classwork We went through some basic expectations. We acted out some distance-time graphs, and made notes on the features of distance-time graphs. We practised calculating the gradient of parts of distance-time graphs to calcuate speed. We looked at a few things that are not allowed on distance-time graphs because they are impossible.