Thursday, 26 August 2010
Tuesday, 24 August 2010
Monday, 23 August 2010
It’s official – Homework can be enjoyable!!!!
After our class discussion we have decided that homework isn’t that painful after all. We like being able to be creative with our layout and select when to do the activities. Having two weeks to complete it means that if we are busy or sick we still have time to get it done. Most of us are proud of the way we present our homework, but interestingly most of us know that we can step up and present our work in an even better way. Look out world here comes Room One!
Sensational sentences have been collected over the past few weeks and reasons given for why they work so well. Now select one and present it on an A4 piece of paper in your most creative way, illustrate it, give your opinion about why it is such a groovy sentence, and remember to include the title and author. Punctuation and spelling MUST be accurate!!!
Then, write a sentence of your own that is sensational. A sentence that describes the evening at your place. JUST ONE SENTENCE! Then if you are feeling creative you may write a sentence about spring, or your garden, or the night.
We are gathering some interesting science facts. This fortnight please collect one fact that relates to each of the sciences chemistry, biology, physics, meteorology, astrology and geology. That’s six facts you need to find. Our science trip on Thursday will help with this. Have you brought your permission slip in for this?
It’s speech week. Wednesday will be our class competition. Then Friday will be the Senior School competition. Practise, practise, practise. That is the key to fabulous speech giving.
Times tables focus is 9x.
As our assembly was rained out we will try to video our plays and poems to put on our class blog. Stay tuned.
Sensational sentences have been collected over the past few weeks and reasons given for why they work so well. Now select one and present it on an A4 piece of paper in your most creative way, illustrate it, give your opinion about why it is such a groovy sentence, and remember to include the title and author. Punctuation and spelling MUST be accurate!!!
Then, write a sentence of your own that is sensational. A sentence that describes the evening at your place. JUST ONE SENTENCE! Then if you are feeling creative you may write a sentence about spring, or your garden, or the night.
We are gathering some interesting science facts. This fortnight please collect one fact that relates to each of the sciences chemistry, biology, physics, meteorology, astrology and geology. That’s six facts you need to find. Our science trip on Thursday will help with this. Have you brought your permission slip in for this?
It’s speech week. Wednesday will be our class competition. Then Friday will be the Senior School competition. Practise, practise, practise. That is the key to fabulous speech giving.
Times tables focus is 9x.
As our assembly was rained out we will try to video our plays and poems to put on our class blog. Stay tuned.
Wednesday, 11 August 2010
Tuesday, 10 August 2010
Glorious Homework
It’s Room One’s turn to host the Community Whole School Assembly this Friday. If you need to memorise your lines then that is your most important homework focus this week. Remember to gather props before Thursday too.
Congratulations to Natalie, Ryan, Jazz, Isla, Caitlin, Tyla, Aden and Hayley for the sensational sentences you discovered, shared and gave opinions about. Glorious. We will ALL be doing that again for homework, selecting brilliantly constructed sentences, look for alliteration, onomatopoeia, interesting vocabulary, complex sentences, images, similes. At least three sentences please.
You will each have a spelling list to add to your homework sheet. Please learn these, define them, and practise using them in sentences out loud or written down.
Timestables focus is 8x. Practise them, ENJOY them, and teach them to someone else.
Remember to record the books/magazines/newspapers you read each day. A parent MUST sign this section.
Collect an interesting scientific fact. It could be something to do with biology, chemistry, physics, or meteorology. Have fun discovering.
Congratulations to Natalie, Ryan, Jazz, Isla, Caitlin, Tyla, Aden and Hayley for the sensational sentences you discovered, shared and gave opinions about. Glorious. We will ALL be doing that again for homework, selecting brilliantly constructed sentences, look for alliteration, onomatopoeia, interesting vocabulary, complex sentences, images, similes. At least three sentences please.
You will each have a spelling list to add to your homework sheet. Please learn these, define them, and practise using them in sentences out loud or written down.
Timestables focus is 8x. Practise them, ENJOY them, and teach them to someone else.
Remember to record the books/magazines/newspapers you read each day. A parent MUST sign this section.
Collect an interesting scientific fact. It could be something to do with biology, chemistry, physics, or meteorology. Have fun discovering.
Sunday, 8 August 2010
Sunday, 1 August 2010
Why did the water rise in our experiment with the candle and glass? Here are a few reasons from experts.
How does it work?
The candle needs oxygen to burn. When you cover the burning candle with the jar, the flame eventually goes out as soon as all of the oxygen is used up. Since there is no more oxygen under the jar, the rest of the gases (nitrogen, argon, carbon dioxide, and others) exert less pressure than the atmospheric air. The greater atmospheric pressure on the outside of the bottle pushes the water in the pan up into the bottle.
There is another important factor that accounts for the rise in water level. The candle flame heats the air in the bottle, and this hot air expands. Some of the expanding air escapes out from under the bottle — you might see some bubbles. When the flame goes out, the air in the jar cools down and the cooler air contracts. The contraction of the air draws the water up into the bottle.
My understanding is different than yours. I believe that every O2 burned is replaced by a CO2 so there should be no significant pressure change from burning O2. This can be seen because the water rises only as the candle is going out and the air is cooling and most of the rise happens after the candle is out all together - when no O2 is being burned. The air expansion is responsible for nearly all the water rising and the water is not "drawn" up as you describe, but pushed in from the outside by the air pressure. An interesting related experiment is to rust some steel wool in the top of the bottle which should indeed result in rising water because O2 is being chemically combined with the iron.
I agree that the heat from the candle causes the gas in the bottle to expand which causes some air to escape which is what may cause the bubbles to form under the bottle. I also agree that when it begins to cool the pressure caused by the heated gas goes down. BUT when the candle burns it not only produces CO2 it also produces water vapor which I have seen condense on the side...SO not all of the O2 goes into the CO2 it goes in to Water as well which occupies less volume. Either way I think the rise in water has to do with the difference in pressure outside vs inside...like a Hg barometer
The candle needs oxygen to burn. When you cover the burning candle with the jar, the flame eventually goes out as soon as all of the oxygen is used up. Since there is no more oxygen under the jar, the rest of the gases (nitrogen, argon, carbon dioxide, and others) exert less pressure than the atmospheric air. The greater atmospheric pressure on the outside of the bottle pushes the water in the pan up into the bottle.
There is another important factor that accounts for the rise in water level. The candle flame heats the air in the bottle, and this hot air expands. Some of the expanding air escapes out from under the bottle — you might see some bubbles. When the flame goes out, the air in the jar cools down and the cooler air contracts. The contraction of the air draws the water up into the bottle.
My understanding is different than yours. I believe that every O2 burned is replaced by a CO2 so there should be no significant pressure change from burning O2. This can be seen because the water rises only as the candle is going out and the air is cooling and most of the rise happens after the candle is out all together - when no O2 is being burned. The air expansion is responsible for nearly all the water rising and the water is not "drawn" up as you describe, but pushed in from the outside by the air pressure. An interesting related experiment is to rust some steel wool in the top of the bottle which should indeed result in rising water because O2 is being chemically combined with the iron.
I agree that the heat from the candle causes the gas in the bottle to expand which causes some air to escape which is what may cause the bubbles to form under the bottle. I also agree that when it begins to cool the pressure caused by the heated gas goes down. BUT when the candle burns it not only produces CO2 it also produces water vapor which I have seen condense on the side...SO not all of the O2 goes into the CO2 it goes in to Water as well which occupies less volume. Either way I think the rise in water has to do with the difference in pressure outside vs inside...like a Hg barometer
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