Here is the Dr. Carlson video on projectile motion we watched in class earlier in the week. You can find more of his material on the Science Theatre web site
Higher
Higher HW – vectors and projectiles
Here is your HW on vectors & projectiles. Please hand in your HW jotter by Wednesday 2nd September. Thanks.
download your copy of the SQA data booklet
The blue SQA data booklet we use in class is also available online as a pdf file. It’s a good idea to get familiar with the page(s) for your course as you get to use a copy of the booklet for unit assessments, NABs, prelims and the external exam in May.
Download your own copy of the booklet for use at home by clicking on the link below.
drawing scale diagrams
Here is an example of a vector problem where we use a scale diagram to find the displacement of an object.
You can watch the video using the player, click on the download button to save it to your computer or watch it in iTunes if you have subscribed to the podcast.
Vector Scale Diagrams from mr mackenzie on Vimeo.
If you want to improve the accuracy of your scale diagrams;
- use a sharp pencil
- measure the vector lengths as accurately as you can
- make sure the point of your vector arrow is on the end of the measured line
- start each new vector right at the tip of the previous vector
Higher HW on uncertainties
Here is your HW on uncertainties. Please do this in the back of your classwork jotter as the HW jotters have not arrived yet. Please hand in your HW no later than 25th June.
Higher physics – internal resistance problem
Hands up for Mr Mallon!
He’s shared another last minute example, this time it’s an internal resistance problem for Higher Physics.
Higher Physics on the move
I’ve used some study leave time to complete the set of questions I said I would give you for your mobile phone. From the class survey, it looks like 240 pixels wide by 320 pixels high is the ideal size for one of these. There are 18 questions, “stolen” from some very old SQA multiple choice papers I found in a cupboard. I’ve tweaked a couple of them to bring them up to date with the current course content.
To use the questions on your phone:
- hit the download icon below to get the attached zip file on to your computer
- unzip the file to reveal the jpg files inside
- send the files to the picture folder on your phone* by bluetooth or usb
*make sure your phone displays them in numerical order, i.e. Q0010.jpg, then Q0011.jpg, etc. – otherwise you’ll get the answer before the question!
I had to send the files individually by bluetooth because my bluetooth program reversed their order. You might need to check which order your bluetooth or usb transfer uses & send them in the wrong order to get it right on your phone. Ask me if you’re still not sure how to do this.
Here’s a sample question:
Nuclear fission
Animated gif showing fission of U-235 by Stephan-Xp
We’ve discussed nuclear fission in class this week. This is the process where an unstable nucleus splits into 2 or more smaller nuclei. The new atoms produced are called daughter products of the fission process. The University of California has a good animation of the fission process with commentary. I have also included a link below to a nice animation from atomicarchive.com.
Rutherford’s scattering of alpha particles
In the last part of the Higher course, we looked at the structure of the atom. Rutherford scattering of alpha particles fired at a very thin sheet of gold foil provided the evidence to develop our understanding of the atom from a “plum pudding” model to a “nuclear” atom – where most of the matter and mass are concentrated in the centre, or nucleus, of the atom.
There is a really good youtube video about Rutherford & alpha particle scattering – watch the first 5 minutes only, it goes on to another topic after that. You can also follow the link below (the download link at end of post) to watch an animation of the alpha particle scattering experiment and follow how the results changed our view of the atom.
