Nat5 waves & radiation exam questions
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...
View Articlenat5 waves & radiation solutions
Here are the answers to the waves & radiation questions.
View Articletotal internal reflection
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...
View Articlex-rays
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...
View Articlegeiger-müller tube
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...
View Articlehow to do half-life questions
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,...
View Articledosimetry: absorbed dose and equivalent dose
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...
View Articlex-rays
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...
View Articlere-entering the atmosphere
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...
View Articleapplications of satellites
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...
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