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?
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.
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.
Here are some additional notes that might help as you go through the materials. Check out the post on using your calculators to measure resistance (I’ll add the link here when I’ve found the post!)
Ring main Based on the SG course notes and not really in the N5 course, but it might give a little background to why when calculating the fuse rating for an appliance you use 240V and not the 230 V as stated.
Here are a list of current wave resources. I will add more as I go through them. Thanks to other schools if you have kindly supplied material. I really appreciate it as do my students.
waves-summary-notes-gairloch1 Some of these notes are for National 4, use with the content statements so you don’t spend too long learning the National 4 work.
vflambda-vdt This starts with a practical model that you can complete in class using the Virtual Physics/ Flash Learning. It then shows how v=fλ is equivalent to v=d/t. Finally some questions will let you practise what you know.