Fusion is the process when
two SMALL NUCLEI join to form a LARGER NUCLEI with the production of ENERGY
Fission is the process when two large nuclei split to
form two smaller nuclei with the production of energy. This can occur
spontaneously or due to a collision with a neutron. Often extra neutrons are
When neutrons split nuclei by fission and extra neutrons are produced which can split further nuclei. Large quantities of energy are produced.
exposure to ionising radiation.
There are 3 groups of category to reduce harm caused by
includes things like wearing radiation badges or EPUs, timing how long you are
exposed to radiation, checking with radiation counters any contamination on
is placing layers of absorbers between you and the source, BEWARE, goggles and
a lab coat are great at protecting against alpha but have no effect on gamma.
Only thick layers of lead would offer protection against gamma.
Distance. Radiation obeys the inverse square law, as you double the distance from a source the level you are exposed to decreases by ¼ . Using tongs is an effective method of keeping your distance from a source.
When it goes wrong
Chernobyl Nuclear Disaster 1986- Effects and Summary
Chernobyl Surviving Disaster (BBC Drama Documentary)
What date was the Chernobyl Disaster?
What was the name of the man who
hanged himself at the start, who was narrating the story?
Which reactor blew?
What was the cause of the accident?
How many people went to see what had
What happened to the people who saw
the hole in the reactor?
What day of the week was the disaster?
What town was evacuated?
How did they drain the water from the
How did they put out the fire?
What was the reading on the counter
when they measured the radiation levels?
Why was this reading misleading and
What was the real count when it was
What were some of the symptoms of
Who was sent to prison for crimes to
do with the disaster? (or record how many people went to jail)
Who was president of the USSR when the
What was the trigger that caused the
man to hang himself?
What is the “elephant’s foot?” in the
Have there been any other nuclear
disasters? Can you find out about them and name them?
What other things did you learn about nuclear power stations and radioactivity?
Here are some videos and powerpoint shows that I’ve made for the NPA but the outcomes are the same as those in N5 Physics. Thanks to John Sharkey for the use of the Virtual Flash Physics (Int 2) and to Julian Hamm of furryelephant for the animations of ionising an atom.
NB In the video above I know totally that photographs were taken well before 1896, the first being taken in 1826. Henri Becquerel discovered that Uranium, a naturally radioactive element fogs photographic film.
I hope that I am not breaking any rules, but these great resources no longer appear to be online. Can’t believe they are 20 years old!
The first photos show the background count rate, a reading of counts taken over a 1 minute period. The source is then taken out at 9:00 am and a count taken between 9:00 and 9:01, readings are then taken every 15 mins.
Various materials of the same mass (500g) are crushed, placed in a boil in the bag bag and placed in boiling water until they have reached equilibrium. They are they removed rapidly and placed into a beaker with a known volume of water and a known temperature. The highest temperature they reach is recorded.
Describe what will happen to the temperature of the beakers when the bags are placed in them.
Why are the bags left in the boiling water for a long time?
Why must you be quick moving the bags into the beakers of water at room temperature?
What would happen if water got trapped in the top of the bag when moving them?
Why are the materials crushed and not a solid lump?
Could this be used to find a value for the specific heat capacity? If so, how.
At last I’ve completed the LOQ. I am sure I’ll find mistakes when I produce the answers. I will get those done a.s.a.p, but they take a lot longer to type up than write up.
When completing these questions there is no point in just going straight to the answers, it wont teach you anything. Use the answers after you’ve completed what you can do and had a good guess at what you can’t. Mark in green anything you’ve had to look up.
This contains the N5 Physics Self Assessment Answers for each unit. Revise with these or use as homework
There is absolutely no point in just copying out the answers. There is an important requirement in checking your answers carefully to ensure you haven’t made a mistake and that you’ve understood the course specifications and the learning outcomes.
Only check over the answer when you’ve completed a section and mark them in green pen.
Advice from the SQA
From the Understanding Standards Meeting I went to Physics teachers were advised to tell their students NOT to add in the rearranging line for their calculations. Just do the formula, substitution and final line. For some of you this will involve too many steps so you might want to cross out any middle lines. I’ve shown mine in these answers to hopefully give you more help as to how to get to the answer.
Finally finished, but I’ll need to edit out the duplicates but I’ll do that with the updated booklet so the numbers match. (updated 22nd June 2020) Not sure when they will get done, it might be a 2021 version
Please if you find mistakes in my answers please add a comment below.
I will now need to go through and make a 2021 booklet of questions and answers with the corrections. This is a long slow process! I hope you find them useful, then it will have all been worthwhile…… Now I need to start the Higher ones!
The materials below I’ve just uploaded from my Intermediate 2 folder and thought some of this might be useful. It’s a quick upload and I’ll sort it out when the rest of the development work is completed (hahaha). Currently I’ve a prelim to write and get copied for two weeks time.
Thanks to S Gray, Drummond Community High School, for putting together this book of experiments that you should have covered in your N5 Physics lessons. Any of these could be discussed in your exam as a question.
I’ve put together, with Mrs Mac’s help, a document with quantity, symbol, unit and unit symbol so that you know the meaning of the terms in the Relationships Sheet. It is in EXCEL so that you can sort it by course, quantity or symbol.
Here are a set of summary notes, I made a few changes and put them into a table rather than boxes to help the flow, not that anyone would know. Thanks to the teacher who produced these- sorry there was no name on them.