Archive for the ‘Year 9’ category

Gettin’ Energetic!

August 25, 2012

We’ve done a lot of study into energy this semester. We are working through our STELR books (link to PDF), and have looked at the idea of Global Warming, Energy storage and types of energy, Efficiency of conversion of energy from one type to another and we’ve done quite a few experiments.

You should be getting the idea that this is all about energy by now – how energy is used, how energy is produced, how energy can be converted into different forms and how energy can be lost when it is changed from one type to another.

Some of you saw this really clearly when you worked with the first big experiment, looking at how we can produce energy. Perhaps when you saw the bright lights shining on the solar panel gave enough energy to light up a small bulb, or perhaps when you saw the big fan (on high) could turn the wind turbine to make enough electricity to run a small fan…

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All Systems GO!

April 5, 2012

So, here we are at the end of term 1. A lot has been covered in class this term – we started with some scientific processes, but quickly moved into body systems and interactions between systems, and have now transferred over to things that affect the whole body (so far we’ve looked at E-M radiation). We have quite a bit to cover yet, but before we go on, let’s ensure that everyone is up to date.

Notice that I wrote that “A lot has been covered in class” and not “we have done a lot in class”.

That’s mainly because I haven’t seen much work from many of you – something that you need to address urgently, because from the first day of next term, students who have not completed the work will be required to attend half-lunch detentions and JWOP to finish that work.

Here is a list of the tasks that must be completed:

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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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