Today we used a microwave to calculate the speed of light!
We looked at a computer simulation of how a microwave works and then used marshmallows to find its wavelength. There is a video of how to perform the calculation with chocolate if you want to see it again.
Today we attempted to light a match using a heat lamp and a concave mirror (it did by the end but only Chris saw). We then watched a demonstration of the Tyndal experiment that showed how optical fibres work.
All of this was to investigate uses of IR.
Today we looked at dispersion in a prism and some of the properties of visible light: how it can be split by two prisms and how to make a lens.
Today we looked at telecommunications and compared the diffraction of Radio waves to Microwaves and their uses. We went outside and found out why radios but not mobiles work in valleys.
In today's lesson you carried out research to create a poster on the uses of the various parts of th
This lesson we went through the Waves test and had an introduction to the EM Spectrum. We watched a video on the various parts and looked at a demo of the whole spectrum.
Prep: Physics for You, P239, Q24 and Q25. These should address some of the common mistakes from the test.
Today we had a test on waves and then you showed off your knowledge with the envelope game on Waves Keywords. Congratulations to Rutherford who stormed ahead and one with a round in hand.
Today we looked at Ultrasound and its uses.
All must be able to define ultrasound (C Grade)
Most should be able to describe how ultrasound is used in medicine (B Grade)
Some could be able to use the wave equation to interpret ultrasound scans (A/A* Grade)
We watched a video on how it works and made notes on its uses including some excellent drawings of some beautiful babies in utero.
We answered questions 2 and 3 of the Sound and Ultrasound Questions
Remember: there is a test on Sound and Wave Properties on Friday!