## Revision

### Classwork

- I gave out some past paper questions on the generator effect which someone requested last week.
- We played MFL articulate, and also a game of kahoot that some of you made.
- Good luck to those of you who have a Spanish exam tomorrow!

## Radioactive Decay

### Classwork

- We went over radioactive decay processes.
- We also went over key electronic components and their functions and uses.
- We looked at the generator effect, but we still need to talk about AC and DC generators.
- Some of you made a kahoot quiz that was very good - well done.

## Revision

### Classwork

- We did a couple of kahoot quizzes. It seems that some of you definitely need to revise what happens in alpha and beta decay.
- I gave out another of the AQA GCSE papers - January 2013 Unit 2 Higher.
### Homework

- Finish the past paper you started in the lesson.

## If you have run out...

- There are lots of past papers from the AQA GCSE syllabus (similar but not identical to ours) here.
- Here is a list of questions to ignore:
- June 2013 Unit 1 Higher - Skip 6.
- June 2013 Unit 2 Higher - All questions OK
- June 2013 Unit 3 Higher - All questions OK
- January 2013 Unit 1 Higher - All questions OK (except maybe 'ethical' stuff - not sure this is on our syllabus.
- January 2013 Unit 2 Higher - All questions OK
- June 2012 Unit 1 Higher - Skip 1. d) and 3.
- June 2012 Unit 2 Higher - Skip 2. d)
- January 2012 Unit 1 Higher - Skip 2. b) and d)
- Specimen Unit 1 Higher - Skip 3. and 5. b) and c)
- Specimen Unit 2 Higher - Skip 4.
- Specimen Unit 3 Higher - All questions OK

## Past Paper Questions

### Classwork

- I gave out Specimen Unit 3 Higher which you started to work through.
- We tried to do a kahoot quiz and failed - hopefully it will be working next lesson.
### Homework

- Finish the paper we did in the lesson, and mark it using the markscheme here.

## Revision

### Classwork

- We did some quizzes on kahoot.
- I provided even more past paper questions for you.
### Homework

- Continue your revision. If you are super keen you can make your own quiz on kahoot to use next lesson.

## Past Paper Questions

### Classwork

- Most of you finished the Electricity and Magnetism questions, and I went over a few of the tricky questions with some of you individually.
- Some of you might want to watch this video that goes over voltage in series circuits (very basic).
- Many of you then started the questions on thermal physics from here which I printed out for you.
### Homework

- Continue your revision.

## Past Paper Questions

### Classwork

- You did lots more past paper questions - June 2015 C and June 2015 D.
- I gave out the Electricity and Magnetism questions from here.
### Homework

- Continue your revision.

## Past Paper Questions

### Classwork

- You did June 2015 A and started June 2015 B.
- I demonstrated chromatic aberration with a glass lens. This is not specifically on the syllabus though.
- I also talked briefly about fluorescence (because of the fluorescent dye used in the model eye) - again this is not on the syllabus, but there's a really interesting video here that you might like if you're interested in it.
### Homework

- Finish June 2015 B and mark using the markscheme I provided.

## Eye & Camera

### Classwork

- You did some past paper questions on refraction and lenses.
- I showed you a demonstration of a model eye, and we saw the correction of short sight and long sight.
- I also showed you an SLR camera, and we went over the silimarities and differences between the eye and the camera.
### Homework

- I gave out a sheet of key terms you need to know. Watch this video which goes through these key terms, and bring any questions you have to next lesson.

## Sight defects & corrections

### Classwork

- We went over the ray diagrams you did for HW.
- You made notes on lens power and we did some example calculations.
- We discussed and made notes on laser eye treatment and the use of different materials for spectacle lenses.
- You answered Q3 on P119.
### Homework

- Make notes on the comparision between an eye and a camera using P115 and this video.
- For your revision, here are the answers to the questions in the textbook.
- Thanks to Mr H there are now lots of past paper questions and answers here if you want to do some.

## The Eye

### Classwork

- We went over the HW questions you did, and especially the conventions for the lens formula: f is positive for converving lenses and negative for diverging lenses; v is positive for real images and negative for virtual images. This was important for Q3 especially.
- You did some of the quetsions on P118.
- We labelled a diagram of the eye (se P114) and made notes on the function of key parts. If you missed the lesson, this video may help.
- We drew two ray diagrams for a normal eye focussing on nearby and distant objects.
### Homework

- Use P114 to make brief notes on the 'near point', 'far point' and 'range of vision'.
- Use P116 and this video to make notes on long and short signtedness, and draw four more eye diagrams for the following situations:
- A short sighted person looking at a distant object without a corrective lens
- A short sighted person looking at a distant object with a corrective lens
- A long sighted person looking at a nearby object without a corrective lens
- A long sighted person looking at a nearby object with a corrective lens

## Past Paper Questions

### Classwork

- You did these past paper questions.
- We went through the first few questions, but need to go through the rest.
### Homework

- Answer Q1-3 on P113 using the lens formula and check your answers here.
- You may want to watch this video which shows some examples of using the lens formula.

## Converging lenses

### Classwork

- We went over the ray diagrams you did for your HW.
- You did a practical with a converging lens to recreate the scenarios from the HW.
- We then did ray diagrams for the object exaclty at f, and the object at a distance less than f.
- You started the questions on P111 - we will go over these next lesson.
### Homework

- Draw a ray diagram for a diverging lens. You can watch this video which does lots of examples, but you don't need to watch it all.
- Make notes on the lens formula using this video. No need to make notes on magnification again. Make sure you have a clear diagram that labels u and v. We will apply this formula next lesson.
*SORRY!!!*After posting the video above you pointed out that it uses a different version of the lens formula. We use the version1/u + 1/v = 1/f .

## Intro to Lenses

### Classwork

- You did a problem about refraction throught a semicircular block.
- We went over the HW and the diagrams for the optical fibres.
- I demonstrated light travelling along the fibre I made last lesson, and we made brief notes on applications of optical fibres.
- We made notes on lenses, in particular converging lenses, and the properties an image can have.
- You used a converging lens in a magnifying glass to form a real diminished image on a screen.
### Homework

- Watch this video up to 6:18.
- Very carefully draw the diagrams and make notes on the properties of the image for the first three situations he discusses - up to d
_{o}between 2f and f. - P110 may be useful.
- Bring your notes to next lesson.

## Total internal reflection

### Classwork

- You did a very hard starter sheet about refraction through a hexagonal prism.
- You did a practical to investigate refraction and total internal reflection in a semicircular block.
- We made notes on total internal reflection and critical angle.
- I demonstrated pulling a glass rod into a thin, flexible glass fibre.
### Homework

- Watch and make notes on this video and do the calculations yourself.
- Complete the path of the two rays in optical fibres on the sheet I gave out in the lesson.
- Bring to next lesson.

## Snell's Law

### Classwork

- You did some calculations using Snell's Law.
- You did a simple practical with a rectangular block to find the refractive index of the material it was made from.
- You did a better practical using a semicircular block to find the refractive index more accurately.
### Homework

- Make sure you have calculated n for each row of your table, then find an average.
- Watch this video about total internal reflection. Copy the four diagrams, and write down the conditions for total internal reflectin to occur.
- Bring your work to next lesson.

## Refraction

### Classwork

- We did a quick recap on ray diagrams for reflection.
- We made notes on refraction, and looked at refraction through a glass block and refraction through a triangular prism.
- We defined 'refractive index' and did some example calculations.
### Homework

- Make notes on Snell's Law using P102-3 of the textbook and this video.
- Bring your notes to next lesson.

## Transformers

### Classwork

- I demonstrated how transformers work using two coils and an AC power supply.
- We recapped on the key points from your notes.
- You worked through a set of questions on transformers (will post the link when I find the file).
- We went through the quesions.
- You made excellent progress on transformers - well done.

## Generators

### Classwork

- You tried inducing a voltage in a coil.
- I showed you this model which you can play with at home.
- We learned how to work out the direction of the induced current in a coil.
- I used this model to look at AC and DC generators, and demonstrated lighting an LED with a generator turned by hand.
- You answered Q1-2 on P203.
### Homework

- Make notes on WHAT TRANSFORMERS DO, HOW THEY WORK, and the TRANSFORMER EQUATION.
- This video is quite short and explains what you need to know.
- P204 and P206 of your textbook will also be useful.
- The first four minutes of this video give a practical demonstration of how transformers work, using a setup similar to that in Figure 5 on P201.
- Bring your notes and any questions you have to next lesson.

## Cover Lesson

### Classwork

- Stick the right hand rule diagram in the gap we left last lesson and label it.
- Answer Q1-2 on P201.
- Make notes on the AC generator on P202. I have printed out a sheet showing an AC generator in several positions that you may find useful.
- Answer Q2 on P209
- For homework, watch this video and add to your notes where necessary.
- If you finish early, do some quiet revision work.

## DC Motor, Generator Effect

### Classwork

- I gave you some feedback on the wording of your HW answers.
- Most of you managed to make a working DC motor.
- I demonstrated the generator effect, and we made notes on it.
### Homework

- In the lesson I induced a voltage in a straight piece of wire. You can also induce a voltage in a coil of wire.
- Watch the first half of this video and this video and possibly this video which demonstrate the principle in action.
- Use the videos an P200-201 to make notes on inducing a voltage in a coil using a magnet.

## DC Electric Motor

### Classwork

- We went over the sheet you did for HW.
- I demonstrated the operation of a DC motor. Hopefully you can build your own next lesson.
- We looked at a labelled diagram of a DC motor and explained how the split ring commutator allows it to turn continuously.
- You started doing some past paper questions.
### Homework

- Finish the past paper quesions and hand them in before registration on Monday morning.

## Motor Effect

### Classwork

- We went over the diagrams you did for HW.
- We made notes on "conventional current".
- You learned the "right hand grip rule".
- I demonstrated the motor effect, and you made notes on that.
- I showed you Fleming's Left Hand Rule & we did a bit of practice.
- If you missed the lesson, wathc this video.
### Homework

- Complete the sheet I gave out in the lesson and bring to tomorrow's lesson.

## Magnetism Recap

### Classwork

- We finished going through the mock paper.
- We started to recap on magnetism. You went through a magnetism test from Year 8, and we made notes on:
- magnetic materials
- electromagnets & the field around a current-carrying coil of wire
- bar magnets & the field around a bar magnet
### Homework

- Continuing from your notes in the lesson, draw the field patterns for:
- two bar magnets attracting
- two bar magnets repelling
- a straight wire with a current flowing through it
- leave some space around each diagram to add notes next lesson.
- Use P195-6 of the textbook and this video from 5:58 onwards to help you.

## Mock

### Classwork

- We went through the mock and got most of the way through it.
### Homework

- No homework.

## More circuits

### Classwork

- I gave out the markscheme to the past paper questions you started last lesson.
- I gave out some more circuits problems, and you modelled these using this circuit simulator.
### Homework

- Continue your revision for your mock.

## Electrical Circuits

### Classwork

- I went over the rules for current, voltage and resistance in series and parallel circuits.
- You did these circuits questions and we went through the answers.
- You started some past paper questions.
### Homework

- Continue your revision for your mock.

## Heat transfer revision

### Classwork

- We went through the quiz questions you did for homework.
- We worked through a sheet on specific heat capacity and started this sheet on latent heat.
- We can finish going through the latent heat sheet next lesson.
### Homework

- Do some revision for your mock.
- this video about latent heat of vaporization might be useful.

## Light bulbs, diodes, rectification

### Classwork

- You completed a sheet on lighting choices.
- You made notes on diodes and rectification, and I demonstrated this using LEDs and an AC power supply.
### Homework

- Complete the quiz on heat transfer and bring to tomorrow's lesson.

## No lesson - science week lecture

## Electricity recap

### Classwork

- We went over:
- cost of electricity
- parts & voltages of the national grid
- why transformers are used
- fuses, circuit breakers and RCCBs
- We started Q7-8 on P192.
### Homework

- Finish Q7-8 on P192 and answer Q1 on P193.
- Hand in tomorrow morning before registration.

## Questions

### Classwork

- Answer the questions on P193 and check your answers. It should take about 45 minutes to answer the questions, leaving 20 minutes to mark and correct them.
### Homework

- Go through what you have done and make a list of things you want to ask me when I get back.

## Power & cost of electricity

### Classwork

- Read and make notes on P186-7.
- Answer the questions on P187 and check your answers.
- Useful videos:
- https://www.youtube.com/watch?v=pffcs7Vlo-w
### Homework

- Recap on what we have covered so far, and re-watch any videos if necessary.

## Electrical safety, national grid

### Classwork

- Answer the questions on P181 and check your answers.
- Read and make notes on P190-191 (the national grid).
- It doesn.t say a lot about transformers . basically at this stage you need to know that they are devices that change the voltage (and current) of AC electricity. A step-up transformer increases the voltage and decreases the current. A step-down transformer does the opposite.
- Answer the questions on P191, and check your answers (they will be given to you).
- Useful videos:
- https://www.youtube.com/watch?v=yJZTk4IP9gE
### Homework

- It's important to understand the concept of earthing, so watch https://www.youtube.com/watch?v=foyBuyx01zI and add to your notes where necessary.

## Recap, electrical safety

### Classwork

- Answer the questions on P177 and P181, then check your answers.
- Read and make notes on P188 ('Electrical issues') and answer questions 2-3 on P189. Check your answers.
### Homework

- In addition to fuses, you need to know how circuit breakers and RCCBs work.
- Watch https://www.youtube.com/watch?v=xS2-Q9l9_ew and https://www.youtube.com/watch?v=1qKiHYNSKjQ (you can skip the bits about fuses) and use P181 to make notes.

## Oscilloscopes

- Claswork
- We went through the test.
- I gave out a sheet on how to use an oscilloscope and a worksheet with examples.
- You used an oscilloscope to look at the voltage across a lamp connected to an AC power supply.
- You found the amplitude (should have been between 5 and 10V), the period (should have been 0.02s but I expect some variation there) and the frequency (should be 50Hz, but again I expect some variation).
### Homework

- No homework.

## Mains electricity

### Classwork

- I gave back the test. We will go through it next lesson. If you missed it I gave you a copy - please complete in 30 minutes and hand in to my locker.
- We made some notes on mains electricity - mainly on the role of the live, neutral and earth wires.
- You wired a plug in pairs - some more successfully than others.
### Homework

- Make notes on Cables and Plugs using P178-9 and the first six minutes of this video.
- Bring your notes to next lesson.

## AC & DC

- Claswork
- We did the test.
- We made some notes on AC and DC, and I demonstrated a few things with the slow motion camera, a turntable, and this simulator.
### Homework

- No homework.

## Revision

### Classwork

- We finished off the past paper questions from last lesson and I gave out the markscheme.
- We put some people in the hot seat and asked them lots of questions from this topic.
### Homework

- Revise for test next lesson.

## Force Multipliers

### Classwork

- You worked through this sheet that introduces concepts about force multiplication.
- We made some notes on force multipliers - you need to know that levers and hydraulic systems are force multipliers.
- We started some past paper questions.
### Homework

- Finish the questions up to and including 3b).
- Hand in tomorrow morning before registration.

## Hydraulic Systems

### Classwork

- We did these questions on pressure and hydraulics.
- I demonstrated a slightly rubbish hydraulic system made from two syringes, and also showed you a real hydraulic jack.
- Next lesson remind me to demonstrate the jack lifting something.
- We added to your notes to say that the ratio of the forces in a hydraulic system is equal to the ratio of the piston areas.
### Homework

- No homework today due to options evening :(

## Circular Motion

### Classwork

- We answered a hard question about the centripetal force on some children on a merry-go-round (see here).
- You marked Q2-3 of the HW using the markscheme, and we went through Q1 together.
- We plotted the graph from last lesson's practical, and discussed the reults with reference to the formula F=mv²/r (though you don't need to know the formula).
- We agreed to do a test on this stuff on Thursday 8th October
- We started Q1-3 on P65, but progress on this was very slow so we only went through a small part of it.
### Homework

- Watch this video about hydraulics and make notes on P62-63.
- Bring your notes to next lesson.

## Circular Motion

### Classwork

- We went through the notes you made for HW to make sure you had all the essential information.
- I showed you this model of what happens if you chuck something horizontally at higher and higher speeds.
- We predicted what would happen if you whirled an object round on a string then let go, and we tried it (this is the video from my other group).
- We did a practical to investigate the repationship between speed and centripetal force.
- NOTE: I'm trialling a new whiteboard so you can see notes from the lesson. The link is here. We'll see how it goes.
### Homework

- Complete these past paper questions and bring to tomorrow's lesson.

## Stability

### Classwork

- We did this starter question on stability.
- We went through the HW in detail.
- We made some notes on stability, and investigated the effect of raising or lowering the centre of mass on stability - though we did not quite finish this.
### Homework

- First complete these sentences at the end of your notes from today:
- If you raise the centre of mass of an object, it becomes ........... stable.
- If you lower the centre of mass of an object, it becomes ........... stable.
- If you widen the base of an object, it becomes ........... stable.
- Then watch and make notes on this video about circular motion up to 6:08 when he starts talking about the bucket of water.
- Bring your notes to next lesson.

## More Moments

### Classwork

- We did an experiment to find the weight of a ruler by balancing it off centre. See Figure 3 on P57.
- We made notes on how to identify the "perpendicular distance".
- We started this sheet of questions.
### Homework

- Finish the worksheet and bring to next lesson.
- Watch this video about stability.

## Centre of mass, moments

### Classwork

- We did some recap on period and frequency, and answered Q1-2 on P53.
- We did an experiment to find the centre of mass of an irregular shaped piece of card.
- We analysed a slow motion video to see that a freely spinning object turns around its centre of mass.
- We made some brief notes on moments, and did a few simple calculations.
### Homework

- Complete both sides of this sheet and hand in before registration tomorrow.

## Pendulums

### Classwork

- We investigated the effect of the length and the mass on the period of a pendulum.
- We considered the best way to time the swings.
- We started to make notes on centre of mass.
### Homework

- Read and make notes on Centre of Mass on P50-51. Bring these notes to next lesson.
- Watch this video which shows an experiment you will do next lesson. No need to make notes on this.