'Identifying' the thingies used to measure radiation e.g. geiger mullet counter (1 Viewer)

[fatassmcfat]

So do we just need to 'identify' as the syllabus says? would they ask these beyond multiple?
or should we learn descriptions/how it works/diagrams (in all peoples notes ive seen they are pretty detailed but i thought it wouldnt go beyond 'identify'
THANKS
btw mullet was on purpose

 

[bengosha60]

its mostly multiple choice but sometimes they do ask in section II. not much usually 1-2 marks or 3 at the most. Just know what it is, what it looks like as a diagram and know how it works at a basic level and youll be fine. Learn at least 2 because they asked for 2 once.

 

[Queenroot]

Just have a general idea of how it works.

 

[faisalabdul16]

Highly doubt you'll get asked a question worth beyond 3 marks about instruments that measure radiation. Just have a rough idea of the 4 instruments -

Photographic film - darkens when in contact with radiation. This is because of the reaction within the silver halide crystals of the film
Geiger counter - consists of a conductive tube filled with argon gas and high voltage connected to the outer-casing and electrode. Radiation ionizes argon atoms and the high voltage causes the resulting electrons to accelerate towards the electrode ionizing more argon atoms.
Scintillation camera - detects non-ionizing radiation. The radiation transfers energy to a fluorescent molecule in order to give off light. Electrons jump up to higher energy levels when energy is absorbed.
Cloud chamber - an air tight box which consists of a super-saturated vapour, either water or alcohol which is cooled by dry air. Radiation ionizes the air and the vapour condenses around the ions producing a visible trail of radiation.