Archive for February 2012

Beating the System

February 16, 2012

So we are studying body systems, particularly the “responding” systems – that means the systems which control how we react to what happens around us. You may think you control your body reactions, but it is simple to prove that you don’t – just think of the last time you heard a loud noise or saw an unexpected bright flash of light. You reacted without planning to – a reflex reaction.

The two main systems we will focus on are called the Nervous system and the Endocrine system. In today’s lesson, we will be learning more about the Nervous System, particularly how it works; how it helps you respond to what happens in the world around you.

The nervous system consists two main parts – the Central Nervous System (basically the brain and spinal cord) and the Peripheral Nervous System (the nerves which connect to the rest of the body).

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The Evolution Revolution

February 15, 2012

Science is exciting – almost everything about our modern life is based on humanity’s understanding of the world – what we call Science. Science is all about understanding and being able to control our world.

So why should you care? You just want to stuff around with your iPhone, chat on facebook, listen to great music and play sports. What’s that got to do with Science? Well, nothing. Not if you just want to sit there and blob, be passive and not involved, that’s your choice.

BUT…

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Dealing with the Crunchy Stuff (Updated)

February 10, 2012

Physics is all about the *crunch*. Theory is fun, and dreaming up the “Why is it so” is great, but right at the bottom, it is all about real world data and using it to find out laws about the way the worlds works.

You may remember the movie “The Matrix” – the scene were Neo finally sees the world as a computer code – all the agents as human shaped green code. This is a great metaphor; the world can be measured and that data can be used to imagine the world.

As prospective physicists (should you manage to endure the pain of VCE physics, and complete your further studies), you must learn how to make your data dance – how to make your experiments reveal the meaning behind the measurements you make. We have looked at two powerpoints, one about graphical analysis, and one about error management and uncertainty calculations – these two presentations are embedded below. Take the time to go over them, and make sure you not only understand them, but can do it yourself.

This post will be updated over the weekend, but I wanted to make sure you had some materials to start. I also want you to post a comment on this as soon as you download the material, just so I know you can access it (that is *all* CMC students!)

Presentation 1:
VCE Physics: Analysis of experiments
Presentation 2:
And here is a link to the first work requirement for all students (I know that there is a link to the answers at the bottom, so you’d better be able to explain your working!)
As we have mentioned in class, you will have an advantage if you can use Excel to process and present data. Excel is a common program, but it is difficult to use for scientific purposes. You should visit the Quantum Boffin site, which has a set of three videos which will help you develop the necessary skills. (Find them on the left column of the page).
Update:
Year 11: HPSC Complete Radiation Notes 2012 are the initial notes you need to print off as soon as possible.
Year 12: Motion in One & Two Dimensions2: Here are the first part of the notes; please make sure you have a copy for our next class.
See you in class!