Posts Tagged ‘combustion’

Creativity with carbon

Tuesday, November 16th, 2010

Imagine you are a carbon atom in a molecule of carbon dioxide in the air.  Close your eyes.  Really imagine yourself as that carbon atom.  Your task is to describe the journey you take from being part of carbon dioxide in the air, through the carbon cycle, until you return to the air again.  Here is my attempt at the beginnings of such a story to give you the idea.  You do not need to start in this way.  You decide.  Get creative!  Let your imagination work!

There I was, happily floating around in my usual gaseous form along with several of my brothers and sisters  (other carbon dioxide molecules), and my good friends nitrogen and oxygen.  We were having a great time bumping into one another, when I got dangerously close to a leaf.  Everyone had always told me to stay away from green plants, that I could get sucked into a stoma and never be seen again.  Before I realized what was happening, I was inside a chloroplast and going through a very fast reaction where I had to let go of my two oxygen atoms, and for a moment be entirely alone.  Before long, I found some other carbons and we joined together, 6 of us, 12 hydrogen friends and 6 oxygen buddies to form a glucose molecule….

Carbon cycle

Tuesday, November 16th, 2010

Electric by johnb/uk

We’re going to try and connect all that we have been learning – respiration, combustion, photosynthesis, food chains – into one big carbon cycle. This brainpop video will help get you started.  

This one on fossil fuels explains where oil, coal and gas come from, and leads into our next section on the importance of oil and how to separate it out by distillation.  This video explains how this works in an oil refinery. We’ll do a world energy audit and look at where the natural resources are and what the alternative energy sources might be.

Carbon cycle

Thursday, February 11th, 2010
Nature by jaxxon on flickr

Nature by jaxxon on flickr

We’re going to try and connect all that we have been learning – respiration, combustion, photosynthesis, food chains – into one big carbon cycle. This brainpop video will help get you started.  

This one on fossil fuels explains where oil, coal and gas come from, and leads into our next section on the importance of oil and how to separate it out by distillation.  This video explains how this works in an oil refinery. We’ll do a world energy audit and look at where the natural resources are and what the alternative energy sources might be.

Specific heat capacity

Thursday, January 7th, 2010
light the match by bikini sleepshirt on flickr

light the match by bikini sleepshirt on flickr

We’ll be looking at heat energy a little more closely and understanding it’s relationship to temperature.  This will lead us on to something called specific heat capacity.  What on earth is that?  Check out this presentation by Mr Hobbins: Specific Heat Capacity

Here is the worksheet we’ll go over in class: Specific heat Capacity questions

We’ll also be doing a lab where we compare different fuels to see which is more efficient.  Different groups will test different fuels, and then pool the data into the following spreadsheet. Comparison of fuels table and graph template

9H Dickinson Copy of Comparison of fuels table and graph template

9D Dickinson Copy of Comparison of fuels table and graph template

Block A Data FUELS heat capacity LAB

Block D Data FUELS heat capacity LAB

For homework you will be required to print out a copy of the table and graph, and then write up your conclusion.  You should also highlight sources of error in the experiment and suggest sensible improvements or alternatives.  This will be due on Friday 15th January.