## Revision

### Classwork

- You came up with some questions and we played bingo.
- Some of you asked about learning to code. There are loads of amazing free resources online - you can do a lot without even having anyone to teach you.
- If you want to make websites you need to learn html and css.
- If you want to learn a 'programming language' you could try javascript or python.
- Try w3schools or codecademy

## Radioactive Decay

### Classwork

- We did a kahoot quiz that highlighted a few issues with radioactive decay processes, so we went over those a bit.

## 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 the markscheme to Specimen Unit 3 Higher.
- I also gave out January 2013 Unit 2 Higher.
- We tried kahoot and failed again.
### Homework

- Continue your revision.
- Grade Gorilla seems to have some well thought out questions.
- These quizzes look ok.
- This site has some basic notes and some useful animations and worked examples.
- This guy has some videos that are pretty basic but quite useful.
- This guy has some decent videos too.
- This guy has videos that are slightly boring but usually cover stuff to a high level.

## 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, we can mark it next lesson.

## Revision

### Classwork

- We did a kahoot quiz that covered a variety of areas.
- I gave out the past papers on Waves that are here.
### Homework

- Continue your revision.

## Past paper questions, bingo

### Classwork

- I gave out the next set of past paper questions on Nuclear Physics from here.
- We also played a game of GCSE Physics Bingo.
### Homework

- Continue your revision.

## Classwork

- You did more past paper questions.
- I gave out the Electricity and Magnetism questions from here.
### Homework

- Technically there is no HW today, but I gave out a sheet of key terms you need to know.
- At some point you should watch this video which goes through these key terms,and ask me if you have any questions about it.

## Past Paper Questions

### Classwork

- You did lots more past paper questions - June 2015 B, June 2015 C, and some of you even finished June 2015 D.
- I demonstrated chromatic aberration using a single glass lens.
### Homework

- Continue your revision.

## Thanks to Mr H

- There are now lots of past paper questions and answers here if you want to do some.

## Lens Formula

### Classwork

- You did these past paper questions.
- You did the questions on P113, and then started the questions on P118.
- If you are still not 100% sure about the lens formula then you may want to watch this video which shows some examples.
### Homework

- We are missing all our lessons next week :( Ideally it would be great to finish the syllabus, so we can focus on revision and past papers after Easter. Here's what you need to do for this HW and both next weeks' HWs:
- You need to know the parts of the human eye and what they do. Use the diagram on P114 to make notes on this. This video is quite good despite the strange voices...
- You need to know what the 'near point' and 'far point' are, and what the ray diagrams look like for a normal eye focussing on a near object and a far object. Use the two diagrams on P115 for this. Copy those diagrams EXACTLY and note that the lens is more curved when focussing on the nearby object.
- You need to know what 'long sight' and 'short sight' are, and how they are corrected. You also need to be able to draw ray diagrams for this. P116 will help, as will this video I just made.
- You need to be able to comapre the eye with a camera - P115 and this video are excellent.
- Finally you need to know how to calculate lens power. This is really easy - see top of P117 and this video.
- For your revision, here are the answers to the questions in the textbook.

## Converging lenses

### Classwork

- We ray diagrams for a converging lens with the object exaclty at f, and the object at a distance less than f.
- We verified the results experimentally.
- We made notes on diverging lenses, and the ruls for constructing ray diagrams.
### Homework

- Draw a ray diagram for a diverging lens if you did not manage it in the lesson. 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 .

## 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.

## 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.
- 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.
- We made brief notes on applications of optical fibres.
### 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, critical angle

### Classwork

- We finished the 'Analysis' side of the sheet from last lesson and went through it.
- We made notes on total internal reflection and critical angle.
- I demonstrated pulling a glass rod into a thin, flexible glass fibre and sent light along it.
### 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.

## 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 will go through the other side of the sheet 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 plotted a graph with sin(i) on the y axis and sin(x) on the x axis. Calculate the gradient - this is the refractive index of the block.
- Watch this video about total internal reflection. Copy the four diagrams, and write down the conditions for total internal reflection.
- Bring your work to next lesson.

## Refraction

### Classwork

- We completed our notes on refraction from last lesson by adding a diagram showing refraction through a rectangular block.
- You did a ray diagram for light travelling through a semicircular block.
- 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.
- It's better if you use the formula in the video, as this works in all situations.
- Bring your notes 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.
- Next lesson we will look at the formula that lets you calculate the angle of refraction.

## 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.

## Generator effect past paper questions

### Classwork

- You worked through these past paper questions on the generator effect.
- I demonstrated a few of the examples in the paper.
- I gave out the markscheme and we went through a some of the questions in detail.
### 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.

## Generators

### Classwork

- You tried inducing a voltage in a coil.
- I showed you this model which you can play with at home.
- I used this model to look at AC and DC generators. Here is a sheet I gave you based on that model.

## Generator effect - wires and coils

### Classwork

- We went over the generator effect for wires and made notes on the generator effect in coils.
- You learned the rule for determining which pole of an electromagnet is which.
- I showed you how to workout which direction a current will be induced in a coil by a moving magnet.
- You answered Q2-3 on P201.
### Homework

- Check your answers to the questions on P201 here.
- Use P201, the sheet I gave out in the lesson, and this video to make notes on the AC generator.
- Bring your notes to next lesson.

## Cover Lesson

### Classwork

- If you didn't watch it in the lesson, watch this video. **NOTE** you do NOT need to know the formula he mentions for your GCSE.
- Make notes on the generator effect for a straight wire using the yellow box on P200. The important thing is that a voltage is induced when the wire cuts across magnetic field lines. If the wire is not moving, or if it is moving parallel with the field lines, then no voltage will be induced.
- You can find the direction of the induced current using Fleming's Right Hand Rule. Stick in the diagram and label it - the fingers are the same as the left hand rule, but this is for when you are generating a current in a wire. We will practise this next lesson.
- Answer Q1 on P201.
### Homework

- You can also induce a voltage in a coil of wire.
- Watch this video and this video which demonstrate this effect. Make notes on this, and bring your notes to next lesson.

## DC Motor

### Classwork

- I gave you some feedback on the HW - most people did not write enough.
- Most of you managed to build a working DC motor.

## 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 answered some past paper questions and we started to go through them.
### Homework

- Check your answers to the rest of the questions from the lesson using this markscheme.
- Answer Q1 on P209 and hand in on Monday morning before registration.

## Motor Effect

### Classwork

- 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.
### Homework

- Watch this video about the motor effect - is a better demonstration than the one I did in class.
- Complete the sheet I gave out in the lesson and bring to next lesson.

## Electromagnetic devices, current carrying wire

### Classwork

- I demonstrated the relay and the electric bell.
- You made notes on conventional current and the magnetic field around a single straight wire carrying an electric current.
- I will show you how to work out the direction of the field arrows next lesson.
- I also demonstrated the 'motor effect' - you can see a demonstration with some better apparatus here.

## Magnetism - recap

### Classwork

- We used the Y8 test you did for HW to recap on ideas about magnetism, including:
- magnetic materials
- bar magnets & the field around 1 bar magnet and 2 bar magnets
- electromagnets & the field around a current-carrying coil of wire
### Homework

- Makes notes on relay switches and electric bells.
- Use P197 of the textbook & this video about relays & this video about bells from 1:07 onwards.
- Bring your notes to next lesson.

## Mock

### Classwork

- We went over the mock and got up to Q5 (the water butt).

## Revision

### Classwork

- You did an end of year quiz sheet, and some past paper questions on graphs of motion.
### Homework

- Continue revision for your mock.

## COVER LESSON

### Classwork

- Complete the worksheet on radioactivity, fission and fusion (do as much as you can in the lesson) - you can use your notes and your textbook.
### Homework

- Continue revision for your mock.

## More circuits

### Classwork

- We went over the rules for voltage and resitance in circuits, and did some examples.
- Hopefully the printers will be working tomorrow and I can give you more questions to practise.
### Homework

## Circuits Questions

### Classwork

- We started to recap on circuits. I went over diodes and some rules about current in citcuits.
- You started doing these recap questions on circuits.

## Heat transfer

### Classwork

- We went over the specific heat capacity sheet from last lesson, and continued to revise this topic.
### Homework

- Continue revision for your mock.

## Heat transfer

### Classwork

- We finished off the quiz that we started last lesson.
### Homework

- Complete the specific heat capacity sheet and bring to tomorrow's lesson.

## Oscilloscopes, heat transfer

### Classwork

- We finished going through both sides of the oscilloscope sheet.
- I started to give you a multiple choice quiz about heat transfer.

## Bulbs, diodes, oscilloscopes

### Classwork

- We went through the HW sheet on light bulb costs.
- We made notes on diodes and half-wave rectification, and I demonatrated this with an AC power supply and some LEDs.
- You started to go through the oscilloscope sheet I gave out before half-term, and we went through the first one together.
### Homework

- Finish off the oscilloscope sheet and bring to next lesson.

## Recap questions, lighting

### Classwork

- You answered Q7-8 on P192 and we went through these.
- I started to talk about incandescent light bulbs - more on this (and other types) next lesson.
### Homework

- Complete the lighting choices sheet and bring to tomorrow's lesson.

## Electricity recap

### Classwork

- We went over:
- cost of electricity
- parts & voltages of the national grid
- why transformers are used
- fuses, circuit breakers and RCCBs
- Well done for making excellent progress while I was away.

## 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
- 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 $
### Homework

- No homework.

## Mains appliances, earthing

### Classwork

- You did this starter activity.
- We went through the HW.
- We started to make notes on earthing - see also this video.

## Mains electricity

### Classwork

- You wired a plug in pairs - some more successfully than others.
- We made some notes on mains electricity - the voltage, frequency, and the difference between the live and neutral wires.
- We started to look at fuses and fuse ratings & I demonstrated some fuse wire blowing. Here's a slow-mo video I made last year.
### Homework

- Answer the questions on P183 and hand in before registration on Monday morning.

## AC & DC

### Classwork

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

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

## End of topic test

### Classwork

- We did the test.
### Homework

- No homework.

## Revision

### Classwork

- We did a hard question that combined levers and hydraulics.
- We put some people in the hot seat.
### Homework

- Revise for test next week.
*NOTE THAT WE HAVE MOVED THE TEST TO TUESDAY!!!*

## Past paper questions

### Classwork

- We made notes on the three factors that affect the size of the centripetal force.
- You continued with the past paper questions I gave out last lesson.
- I gave out the markschemes so you can go through them.
### Homework

- Revise for the test next Thursday.

## Past paper questions

### Classwork

- I demonstrated a hydraulic jack, and showed that it uses a combination of a lever and two hydraulic pistions to achieve the necessary multiplication of force.
- We did these past paper questions - some of them are quite tough. We will go through them next lesson.

## Hydraulics

### Classwork

- We played pressure bingo.
- We did an example of working out the output force from a hydraulic system, and noted that the ratio of the piston areas is equal to the ratio of the input and output forces.
- We did these questions on pressure and hydraulics and went through the answers.
### Homework

- Watch this video about force multipliers and make notes.

## Circular Motion

### Classwork

- 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 did these past paper questions and went through Q1 together.
- We agreed to do a test on this stuff on Thursday 8th October
### 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 last question of the HW.
- We predicted what would happen if you whirled an object round on a string then let go, and we tried it.
- We did a practical to investigate the repationship between speed and centripetal force - we will plot a graph next lesson.
- 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.

## Circular Motion

### Classwork

- We went through the HW in detail, using the actual GCSE markscheme.
- We considered some objects (like cranes and cars) and how their stability can be improveed. We watched a few videos showing actual toppling tests for buses: first one, second one.
- We started to make notes on circular motion, and got up to describing the centripetal acceleration and centripetal force.
- I showed you this simulation where you can send stuff into orbit.
### Homework

- Answer the questions on P61 and hand in on Monday morning before registration.
- this video will help - watch it up to 6:08 when he starts talking about the bucket of water.

## Stability

### Classwork

- We did this starter question on stability.
- We finished off stability, making notes on how the position of the centre of mass and the width of the base affect stability.
- We did a very short practical to investigate this with different shaped bits of card.
### Homework

- Complete this worksheet and bring to tomorrow's lesson.

## Stability

### Classwork

- We went through the HW in detail.
- We started to make notes on stability - next lesson we will see how objects can be more or less stable.

## Even More Moments

### Classwork

- We went through the HW. Please make sure you have corrected your answer to the penultimate question (about the people on the see-saw) - if you still can't do it, ask me.
- We did some harder moments problems where you really had to think about which direction the moments were acting.
- 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" - you will practise this for HW.
### Homework

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

## More Moments

### Classwork

- We did some really easy moments questions.
- We then did some harder examples, which included upward forces, and working out the weight of a ruler when it was balanced with the pivot off centre.
### Homework

- Answer Q1-3 on P57.
- BRING TO TOMORROW'S LESSON - I won't have time to mark it if you hand it in.

## Moments

### Classwork

- We went through the HW and considered factors that could affect the period of a swing in a park.
- We saw that the centre of mass of an object with a non-uniform distribution of mass may not be in the middle.
- We started to make some notes on moments - we will continue this next lesson.

## Centre of Mass

### Classwork

- We recapped on ideas about pendulums, and also the relationship between period and frequency.
- We considered the best way to time a the swing of a pendulum.
- We did a practical to find the centre of mass of a cardboard shape.
- We chucked a piece of caradboard so it span and used a slow motion camera to analyse the motion.
### Homework

- Answer Q1 on P51 and Q1-2 on P53.
- Hand in on Monday morning before registration.

## The Pendulum

### Classwork

- We investigated the effect of the length and the mass on the period of a pendulum.
### 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.