The Q&W unit assessment is next week. Here are the Scholar notes to help with your revision.
podcast
podcasts go in this category for the feed to iTunes
higher particles and waves revision
Remember that your unit assessment for P&W will take place at the end of this week. The attached notes might be helpful during your revision.
particle accelerators
An electric field can be used to accelerate charged particles.
Conservation of energy tells us that
work done by the electric field = change in the particle’s kinetic energy
The speed of the particle can be determined if its charge and the accelerating voltage (potential difference) are known. The notes attached to the end of this post will show how to perform the calculation.
These short video clips show how to draw electric field lines for point charges and parallel plates, with example calculations for the work done by electric fields and the final speed of charged particles in electric fields.
Q1(a) Electric fields lines around point charges from mr mackenzie on Vimeo.
Q1b – Electric field between parallel plates from mr mackenzie on Vimeo.
Q2 – Work done in moving a charged particle through a potential difference from mr mackenzie on Vimeo.
Q3 – Calculating the speed of a charged particle in an electric field from mr mackenzie on Vimeo.
Our Dynamic Universe summary notes
A set of summary notes for the 1st unit of Higher Physics is attached below. Don’t forget that BBC Bitesize and Scholar are also available for revision.
Nat5 dynamics & space answers
Here are the solutions to the dynamics and space past papers questions.
Nat5 dynamics & space questions
Some of you asked for revision questions ahead of the unit assessment. Down load these problems from older past papers. I will add a secoond post with the answers shortly.
temperature, colour and line spectra
We’ve been looking at how the temperature of an object can affect it’s appearance. The attached handout recaps on our work in class and provides some examples of line spectra.
changing state – latent heat of fusion/vaporisation
Before the holidays, we performed a set of experiments to determine the latent heat of fusion and latent heat of vaporisation of water. Next week, we’ll review that work and think about possible reasons why our results were not closer to the “book” values.
The attached pdf provides a summary of the topic.
National 5 – Satellites
We’ve started looking at telescopes and this BBC programme from 2 years ago featured the replacement for Hubble, the James Webb Space Telescope. The presenter, Maggie Aderin Pocock now hosts The Sky at Night on BBC4.
Please take some time to watch both parts of the film. Maggie covers the basic idea of satellites, how we achieve geostationary orbit, looks at examples of Earth observation and the manufacture of the James Webb’s massive 6.5m mirror. In part 1, around 17 minutes in, you’ll see satellite footage over the Highlands, can’t quite see Thurso though.
Satellites-part1 from mr mackenzie on Vimeo.
Satellites-part2 from mr mackenzie on Vimeo.
If you want to download a copy of the video to watch later, use the download link below. Please be patient, the file is about 660MB in size.
extra nat5 revision materials
You can also use these notes to prepare for the test on Monday. The test will cover everything up to page 46 in the attached file, but you can skip pages 39 & 40 on Newton’s third law.
Thanks to Mr Noble for sharing his notes.