## End of year quiz

### Classwork

- We did this quiz.

## Ultrasound

### Classwork

- We started some questions on ultrasound.

## Ultrasound and the doppler effect

### Classwork

- We made lots of notes on unltrasound scans of the body, and the use of the doppler effect to measure the speed of blood flow.

## Sound - Y8 Recap

### Classwork

- We did some recap of Y8 sound concepts.
- We visualised some sounds on an oscilloscope.

## Forces and motion, radiioactivity

### Classwork

- We finished off the questions I gave out last lesson and went through the answers.
- I gave out a sheet on radioactivity, fission and fusion which most of you finished or nearly finished in the lesson.
### Homework

- Finish the questions started in class, then mark and correct using the markscheme I gave out at the end of the lesson.
- Bring your marked work and any questions you have to tomorrow's lesson.

## Graphs of Motion

### Classwork

- 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 hand in before reg on Weds.

## Big Bang

### Classwork

- We did these questions on the Doppler effect and the Big Bang.
- We made some notes on what the 'Big Bang' theory states, and the other main piece of evidence for it - Cosmic Microwave Background Radiation.
### Homework

- I gave out the list of things you need to know for the end of year examination.
- Go through this list and highlight areas you want to target in the remaining revision lessons we have.

## No Lesson (bank holiday)

## Doppler Effect

### Classwork

- We made some notes on the Doppler effect and I demonstrated it using this website and by whirling a guitar around.
### Homework

- You need to find out about how the Doppler effect was used to show that the universe is expanding.
- Read and make notes on P120-121.
- Watch this video - it's quite good and should help clarify some of the stuff on those pages.

## Test

### Classwork

- We did the test.
### Homework

- No homework.

## X-rays, total internal reflection

### Classwork

- We made some very brief notes on x-rays and CT scans.
- I demonstrated total internal reflection and we made some notes on this including the 'critical angle'.
- You will do more on total internal reflection next year, including the formula to calculate the critical angle.
- We did some practice questions - I gave out the markscheme at the end of the lesson.
### Homework

- Revise for test on Monday.

## E-M Spectrum - uses and dangers

### Classwork

- We made notes on the uses and dangers of radio waves, microwaves, infrared, visible light and ultraviolet.
### Homework

- Add to your notes with the uses and dangers of x-rays and gamma rays.
- Find out which parts of the E-M Spectrum are 'ionizing' and what this means.
- This video and P84-87 will help.
- Bring your notes to next lesson.

## Electromagnetic Spectrum

### Classwork

- We talked about eclipses for a bit, then went outside.
- I did a demonstration of interference of sound from two speakers.
- You made notes on the electromagnetic spectrum, and asnwered Q1-3 on P79.
### Homework

- Check your answers to Q1-3 before next lesson.

## Wavefronts and rays

### Classwork

- We did lots of examples of representing waves as wavefronts and rays.
- We completed the diagrams started in the video that represented reflection and refraction with wavefronts and rays.
- This is very tricky but you need to be able to do it.
- We also talked about mirages.
### Homework

- Optional: watch this video that explains how mirages are formed with some good examples.

## Diffraction and interference

### Classwork

- We went through the notes and questions you did in the cover lesson on Monday.
- I demonstrated diffraction of light through a narrow gap.
- I demonstrated interference of sound waves from two speakers, and also sound waves from one speaker which reflected off the walls.
### Homework

- Watch and make notes this video about rays and wavefronts.
- Bring your notes to next lesson.

## Cover Lesson

### Classwork

- You should already have read and made notes on P72-3, so answer Q1-3 on P73.
- Then read and make notes on P74-5.
### Homework

- Watch this video from 4:44 to 9:20, and add to your notes from the lesson.

## Reflection and refraction

### Classwork

- We went through the HW and did some more calulations, and looked in more detail at the relationship between the frequency of sound and the pitch.
- We did a series of practicals to investigate refraction in rectangular blocks and triangular prisms.
- We made some notes on reflection and refraction.
### Homework

- We have seen diffraction demonstrated with the ripple tank.
- Watch this video and this video and make notes on diffraction using P72-3 of the textbook.
- Bring your notes to next lesson.

## Waves calculations

### Classwork

- We did lots of wave calculation practice using mini whiteboards.
- We went through the HW - make sure you are happy with the last part of Q2 as many people struggle with this.
### Homework

- Watch and make notes on this video about ferquency and period.
- He comes up with the formula
f x T = 1 - This formula can be rearranged to give
f = 1/T andT = 1/f - Calculate the:
- period of a 440Hz sound wave
- frequency of some water ripples that have a period of 0.5s
- period of a sound wave in water that travels at 1500m/s and has a wavelength of 2m

- Bring your notes and answers to next lesson.

## Wave properties

### Classwork

- We demonstrated transverse and longitudinal waves on a slinky, and made notes about the compressions and rarefactions of a longitudinal wave.
- We did Q2-3 on P67.
- We made notes on wavelength, amplitude, frequency and period - more on this next lesson.
### Homework

- Make notes on the wave equation on P68-9.
- Answer Q1-2 on P69 and bring to next lesson.

## No Lesson

## Ripple tank

### Classwork

- We went over transverse and longitudinal waves (which you made notes on during the cover lesson).
- We watched some demonstrations of things waves can do using a rippple tank.
- In particluar, we looked at reflection of waves from flat and curved surfaces, and diffraction of waves moving though a gap.
### Homework

- No homework.

## Cover lesson

### Classwork

- Please go through your test and make any corrections you can using a different colour pen. We will go through the paper together next lesson.
- We are now starting a new topic - Waves. Read P66-7 and make notes on waves.
### Homework

- Watch the first five minutes of this video about waves, and add to your notes.
- Bring any questions you have to next lesson.

## Test

### Classwork

- We looked in detail at the energy transfers in a rollercoaster.
- We did the test.
### Homework

- No homework.

## Power & Gravitational Potential Energy

### Classwork

- We did Q2-3 on P43, and went through the answers.
- We started to look at GPE.
### Homework

- Watch this video about GPE and this video about kinetic energy.
- Make notes on these using P44-47 to help you - we will go through some examples before the test next lesson.
- If you want to practise using the questions in the book then the answers to P45 and P47 are here.

## More Work and Energy

### Classwork

- We did some examples of work done calculations.
- We did the questions on this sheet and went through the answers.
### Homework

- Watch this video about power and read P42-3 of the textbook.
- Make notes on these and bring to next lesson.

## Work Done

### Classwork

- We went through the questions you did for HW.
- We started to make some notes on work done.
### Homework

- Watch this video and read P40-41.
- Add to your notes from the lesson and bring your notes and any questions to next lesson.

## Hooke's Law

### Classwork

- We did the Hooke's Law practical and plotted graphs for a spring and an elastic band.
- We added to the notes you made for HW - see here
### Homework

- Do Q6-7 on P38 and bring to next lesson - skip the graph part (7b).

## Stopping distance

### Classwork

- We went through the answers for the homework.
- We also did some recap on the difference between distance-time, speed-time, displacement-time and velocity-time graphs.
### Homework

- Watch this video about Hooke's Law and read P36-7 of the textbook.
- Make notes on these and bring your notes to next lesson.
- In the lesson we will do the practical described in the video.

## Stopping distance

### Classwork

- We added to the notes you made for your homework, and answered the questions on P33 of the textbook.
- We started to examine the velocity-time graph for stopping cars - you will complete this analysis for homework.
### Homework

- Answer the questions shown here.
- Bring your work to next lesson when we will go through the answers.
- You can also test your reaction time if you like.

## Skydiver

### Classwork

- We did a quick demo of thermal conductivity of metals as a reminder of Y9 work.
- We went through the HW, and made some notes on skydiving.
### Homework

- Read P32-33 and watch this video about stopping a car. Make notes on these, and bring to next lesson. The video is a bit annoying, because it uses units of miles per hour and feet, but otherwise it's ok.

## Terminal Velocity

### Classwork

- We observed some falling objects using multiple exposures of a camera - see this pic from the lesson.
- We made notes on terminal velocity.
### Homework

- Answer Q1 and 3 on P35 and bring to next lesson.
- Also you could optionally watched this short mythbusters clip, though it doesn't exactly include a lot of physics.

## Crumple Zones

### Classwork

- I gave you some feedback on the homework, and the ideal exam-style answer.
- Remember it is not the change in momentum that matters in this case - it's the rate of change of momentum that determines the force.
- We built and tested crumple zones:
### Homework

- No homework.

## Forces and Momentum

### Classwork

- We made some notes on forces and momentum, and force = change in momentum / time.
- If you missed the lesson watch this video which should help a bit.
### Homework

- Read P26-7 of the textbook.
- Do Q1-2 on P27 and hand in tomorrow.

## Collisions and Explosions

### Classwork

- We demonstrated various collisions where two objects of varying masses bounced off each other, stuck together, or were pushed apart by springs.
- We did this worksheet.
### Homework

- Please do this anonymous survey before Monday.

## More Momentum

- We estimated the momentum of various animals travelling at top speed.
- We went through the homework together.
### Homework

- Watch this video and this video about explosions, and make notes on P24-25.
- Also have a look at this video (you don't have to watch it all - just watch a few of the explosions).
- Bring your notes to next lesson.

## Momentum

### Classwork

- We went through the rest of the mini-test on fission and fusion.
- We started a new topic - momentum, forces and energy.
- We defined momentum and did some basic calculations about momentum and collisions. If you missed the lesson watch the first six minutes of this video.
### Homework

- Watch this video that tries to demonstrate conservation of momentum in space. It's not a great demo, but it is in space!
- Answer Q1-3 on P23 and bring to the lesson on Monday.

## Mini test on fission and fusion

### Classwork

- We did the test and marked it in the lesson.
### Homework

- No homework.

## Star life cycle

### Classwork

- We made detailed notes on the life cycle of a star.
### Homework

- Revise for a short (15min) test on fission and fusion next lesson.
- What you need to know is here and here.

## Nuclear Fusion

### Classwork

- We made notes on nuclear fusion.
### Homework

- Watch this video which shows you just how big some stars can be.
- Watch this video about the life cycle of stars.
- Learn the life cycle of low mass and high mass stars on P231 - there will be a quiz next lesson.

## Nuclear Reactors

### Classwork

- We went through lots of your examples of chain reactions - thanks for those.
- We made notes on what can happen to neutrons released by nuclear fission in a nuclear reactor, and discussed control rods and the use of water as a moderator.
- We watched a short video which showed the inside of a nuclear reactor.
### Homework

- Next week we will finish off nuclear fission and move on to nuclear fusion.
- Watch this video about nuclear fission again now that we have learned a bit more in class.
- In preparation for starting nuclear fusion, please watch this video and read P224-5 of the textbook. We will make notes on this next lesson.

## Chain Reactions/Emails

### Classwork

- We looked at the way chain reactions can grow and decay in the context of chain emails.
- I forgot to go through the homework from last lesson (which only 8 people handed in for some reason?) - we will go through this next lesson.
### Homework

- If you did not hand in your homework from last week (Q1-2 P223) please hand it in tomorrow morning.
- Watch this video which shows different ways of modelling chain reactions.
- Find another example of something like the 'chain reactions' we discussed. We have discussed chain emails, fission chain reactions and I also mentioned disease spread, so you can't use those.
- Explain how the thing increases or decreases based on the number of things passed on per generation. E.g. new contagious diseases (against which we have no immunity) can grow like a chain reaction - if each person infected goes on to infect, say, 2 more people, then initially the number of people infected in each generation will grow exponentially and the disease will spread more and more quickly.
- Write about your example of a 'chain reaction' - maximum 1 side A4 - and bring it to next lesson. Include pictures and graphs if you like.

## Nuclear Fission

### Classwork

- We went through the test. Please make sure you go through your test and do your corrections carefully for the parts we did not go through in detail - you should be able to do this using your notes and the textbook. If any issues remain, please come and speak to me.
- We made some brief notes about medical tracers.
- We started learning about nuclear fission.
### Homework

- Read P.222-3 of the textbook and watch this video. Add to your notes from the lesson.
- Answer Q1-2 on P223 and hand in on Monday morning.

## Finishing off test

### Classwork

- Those who missed the test did it.
- Those who had done the test reserched some interesting stuff about radioactivity - we will share what you found next lesson.
### Homework

- No homework.

## Recap + Test

### Classwork

- We looked at different situations where long and short half-lives are desired, and learned about carbon dating.
- We did the test.
- NOTE!!! If you missed the test today, please be prepared to do it on Monday after half term.
### Homework

- No homework.

## Even more half-life

### Classwork

- We finished the other side of the worksheet from last lesson and went through the answers.
- We put some people in the hot seat.
### Homework

- Continue your revision.

## More Half-life

### Classwork

- We went through the graph from the HW.
- We defined activity and discussed the difference between activity and count rate.
- We started the Radioactive Half-Life worksheet - will finish and go through next lesson.
- We started collecting some data to find the half-life of protactinium-234 - we will process the data in Excel next lesson.
### Homework

- Revise for test next week.

## Half-life

### Classwork

- We modelled radioactive decay using dice.
### Homework

- Plot a graph of your results (number of rolls on the x-axis, dice remaining on the y-axis).
- Find the half-life of your dice, in terms of number of throws (this can be a decimal - doesn't have to be a whole number of throws).
- Imagine we did the same experiment again, but the dice had spots on TWO of the faces instead of one. Sketch the shape you would expect for this graph on you would expect for this graph on your other graph with a dotted line.
- Do all of this on one sheet of graph paper and hand in on Tuesday morning before registration. Make sure your name is on it.

## Half-life

### Classwork

- We went through the rest of the past paper questions sheet.
- We started to introduce half-life.
### Homework

- Read P216-7
- Answer Q1-2 and bring to Monday's lesson.

## Nuclear equations + past paper questions

### Classwork

- We went through these nuclear equations.
### Homework

- Answer Q1-4 of these past paper questions and hand in on Tuesday morning before registration.

## Uses of Radiation & Nuclear Equations

### Classwork

- We introduced nuclear equations for alpha and beta decay, including the emission of gamma rays.
### Homework

- Watch and make notes on this video about radiotherapy.
- Watch and make notes on this video about smoke detectors.
- Read and make notes about how gamma sterilization works using this page (you don't have to make notes about the other methods like ethylene oxide and electron beams, but they are interesting to compare).