National 5 – fizzics

electric field line patterns for point charges and parallel plates

November 23, 2021 23:30

These short video clips show how to draw electric field lines for point charges and parallel plates. Q1(a) Electric fields lines around point charges from mr mackenzie on Vimeo. Q1b – Electric field between parallel plates from mr mackenzie on Vimeo.

forces

November 13, 2021 16:34 - 1 second - 1 Byte application/pdf

We’ve been looking at forces for the past two weeks. Here are some notes and videos to help you learn more about this topic. Newton’s 1st Law animation showing effects of air resistance Friction: here are 3 clips about friction from the BBC programme Bang goes the Theory //www.youtube.com/watch?v=qhpXnGaYmdA //www.youtube.com/watch?v=XNOEP1XIFiM and look what happens when ... Read more

drawing scale diagrams

October 02, 2021 15:30

Last week we learned about vectors and I showed you the scale diagram method for solving a vector problem, such as determining the displacement of an object after a journey. The video is a short re-cap of the scale diagram technique.

applications of satellites

April 14, 2020 10:51

By now you should have watched the video about satellites. This screenshot showing a satellite passing over the Highlands was taken from about 17 minutes into the programme – did you notice at the time? It was quite eye-opening to see just how much modern society relies on ... Read more

re-entering the atmosphere

April 14, 2020 09:50

In space there is no air resistance to oppose motion, so the Space Shuttle orbiter could travel at very high speeds, up to 17,000 mph! At these speeds, the orbiter experienced enormous air resistance as it descended into the Earth’s atmosphere at the end of its mission. Air resistance is just like any other form ... Read more

x-rays

September 02, 2019 10:22 - 13.7 MB

X-rays are a form of electromagnetic radiation. They have a much higher frequency than visible light or ultraviolet. The diagram below, taken from Wikipedia, shows where x-rays sit in the electromagnetic spectrum. image by Materialscientist Wilhelm Röntgen discovered x-rays and the image below is the first x-ray image ever taken. It shows Mrs. Röntgen’s hand and wedding ring. ... Read more

dosimetry: absorbed dose and equivalent dose

September 07, 2018 20:05

This week, we’ve looked at calculating radiation doses. The absorbed dose D, measured in Grays (Gy), takes into account the energy E absorbed and the mass m of the absorbing tissue. The higher the energy, the greater the absorbed dose. If you are wondering why the absorbing mass is important, consider the different masses of ... Read more

how to do half-life questions

August 30, 2018 15:49 - 1 second - 55.5 KB application/pdf

We started looking at half-life today. The attached file walks you through different types of half-life problem. There are some questions for you to try along they way. The answers are at the end, please don’t cheat!

geiger-müller tube

August 29, 2018 14:01

We’ve examined the operation of a Geiger-Müller counter as part of the radiation topic. image by Theresa Knott The Geiger-Müller (GM) counter is used to detect ionising radiation such as alpha and beta particles or gamma rays. The radiation enters through a very thin window at one end of the tube. This window is usually made ... Read more

x-rays

August 21, 2018 09:26

X-rays are a form of electromagnetic radiation. They have a much higher frequency than visible light or ultraviolet. The diagram below, taken from Wikipedia, shows where x-rays sit in the electromagnetic spectrum. image by Materialscientist Wilhelm Röntgen discovered x-rays and the image below is the first x-ray image ever taken. It shows Mrs. Röntgen’s hand and wedding ring. ... Read morex-rays

total internal reflection

June 21, 2018 10:23

Earlier this week, we used semi-circular perspex blocks to investigate total internal reflection. I’ve put together a short video showing total internal reflection in a semicircular block and a perspex model of an optical fibre. total internal reflection from mr mackenzie on Vimeo. There are some nice ray diagrams explaining total internal reflection on BBC ... Read more

nat5 waves & radiation solutions

April 18, 2018 13:39 - 823 KB application/pdf

Here are the answers to the waves & radiation questions.

Nat5 waves & radiation exam questions

April 18, 2018 13:37 - 1.46 MB application/pdf

I’ve put together a collection of exam questions from old standard grade and intermediate 2 papers that fit the national 5 curriculum. Try these before moving on to past papers and check your answers using the solutions that I will post next. No cheating!

half-life calculations

April 18, 2018 13:33

I’ve attached a short guide to half-life calculations. There are some questions after each worked example, answers are at the end of the sheet.

the geiger-muller tube

March 27, 2018 15:26

We’ve examined the operation of a Geiger-Müller counter as part of the radiation topic. image by Theresa Knott The Geiger-Müller (GM) counter is used to detect ionising radiation such as alpha and beta particles or gamma rays. The radiation enters through a very thin window at one end of the tube. This window is usually made ... Read more the geiger-muller tube

National 5 – fizzics

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