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Wednesday 16 April 2014

Science Fair Recount For Last Year

ThE DAMP DESTROYER
Exploring how water affects wood strength.



Aim: My aim is to find out a variety of different environmental conditions will ultimately affect the strength of wood when pressure is applied. The reason for this is to consider decisions that builders have to make when making buildings or structures that will be outside.


Hypothesis: I believed that when wood absorbed moisture it became affected. When wood is exposed the exposed to water it makes the fibres in the wood expand.

Introduction: For last year's science fair project I would like to investigate how the environment affects the decaying process in wood, and as a result how it affects its strength.

Equipment & Method: 1. My dad helped me cut 20 pieces of wood. Each were 30 cm long, 20 mm wide and 10 mm  in depth. They were all untreated pine.

There were five variations in this experiment.

2.  The wood was divided into five groups of four. All pieces in the group were labeled with the group letter A,B,C,D or E

3  Group A is the constant in this experiment and will show the effect of air on wood decay.

4. Group B was placed in a salt water.

5. Group C was placed in acid water this was made of water and vinegar and tested with Litmus paper to ensure that a PH 4.5 was obtained.

6. Group D was placed in rainwater. This was collected away from trees or any other external source that may contaminate the water.

7.Group E was placed in soil which was dampened regularly to make sure that the wood remained moist.

8.They was left in their environments for 2 weeks then left to dry out for 1 week.

9.The wood strength is tested as follows - With use of bathroom scales and a G clamp we recorded the pressure applied from each 90 degree turn of the clamp.

I tested this same procedure 10 times to get an average of 25.5 kg per 90 degree turn.
The timber is supported between two pieces of wood to stop it twisting and the pressure is applied by the clamp.
The mean average of each group is calculated and recorde


Things that will remain constant:- Things that changed:-

The width of wood                What ‘environment’ the
The length of the wood        wood was left in.
The depth of the wood sample How much pressure was
The type of timber used. applied to the wood.
Each sample was completely submerged in liquid
or soil.



Results: The purpose of this experiment was to see how the strength of wood was affected in different elements. The results suggest that placing it in soil left it the weakest. The wood sample supported an average weight of 104.775kg  when it was exposed to soil. As predicted the sample just left in air was the strongest because there was no additional elements added to it that might affect it’s strength. The average for the air experiment was 127kg.The sample left in salt water was the next weakest, followed by acid. The sample left in just rain water was the second strongest.The ones exposed to soil break easier but hold their shape but the ones exposed to water go rubbery and change shape easier but don’t break as quick.


Conclusion: In conclusion, my hypothesis was that when wood absorbs moisture its structure becomes affected. I believe that when it is placed in damp soil it will weaken the greatest because it may be exposed to greater decay to its structure.



What did I do well with last year

Last year I think I did well because I got a silver ribbon, and my testing went well.

What did I find difficult last year

Finding out how I would test the strength of the wood.


Science Fair Ideas
1.The effect of gibberellic acid on plants with red lights Which colour Glad Wrap allows plants to grow the tallest?

2.Effect of electric current on worm regeneration Ability of goldfish to distinguish colours Tan-point coat colour inheritance in labrador retriever dogs Effect of thermoelectric fields on fire ants Does colour affect a chicken's appetite?




Monday 14 April 2014

Natural skills By Greg O'Connell

My Complaint to Rebel Sport

Tuesday 15th April,2014


Dear Rebel Sport Tauranga

I brought a indoor mini cricket set (Grey Nicholas) which was $25 for my friends birthday. He played a shot and middled it and the bat snapped in half. I think that the ball is too hard. We retuned it and we got a new one for him and we started to use my plastic ball, and it was much better.

Therefore I think that the ball is too hard and you need to start selling a new sort of brand of mini cricket sets. Next time I will not be happy if it is not fixed.

Next time I come to your store I expect you to have change it and stop selling faulty products and sell the right things. I think that I am not the only one that has had this problem with this product.  



Yours sincerely

Harrison Baldwin

30 18th Avenue        

Sunday 13 April 2014

How To Speak Italian

Hello - Ciao

Goodbye - arrivederci

Thank you - grazie

zero - zero   one - uno     two - due   three - tre    four - quattro    five - cinque    six - sei   seven - sette   eight - otto   nine - nove  ten - dieci  

My name is Harrison - Il mio nome รจ Harrison

in your chosen language.

Give 5 pieces of basic information about your chosen country.

1. 61.3 million people live in Italy.
2. The capital of Italy is Rome. 
3. They speak Italian anD German.
4. More than %98 can read and write.
5. The currency is in Euros.  

Saturday 12 April 2014

Homework Week 11




Read the poem to help answer the questions.
*



a)


Write down eight words the poet has used to describe sounds.





i)
ii)
iii)
iv)


The quiet things speak.
Some whisper
Some clang
Some sigh


v)
vi)
vii)
viii)


Whistle and hum Grasses
Some swish
Some creak
Some Whisper





(b)The poet describes some objects as acting like humans, for example "quiet things speak". Find two more examples of this kind of writing from the poem.









c)
Ashcans roll
Treetops sigh



In the second line the poet states, "The quiet things speak". Name two "quiet things" from the poem.




i)
ii)


Some whisper
Treetops sigh



D


) What is shown by the use of the hyphen at the end of the line, "When the wind goes —"?
It is used for a dramatic pause.



e)


What two main things happen in the poem?




i)
ii)


The wind started.
The wind stopped.

How to improve spelling 






Thursday 10 April 2014

Khan Academy


  • His name is Khan Salman and he is behind Khan Academy, the internet teaching sensation.  
  •  Khan has over 3000 videos and over 4 million pupils .
  •  Bill Gates uses it for his kids to help them learn, he also donated $14 million.
  •  Khan will never put a price tag on khan Academy so it is a non profit organisation. 
  •  He has over 28 million views a day but be is all ways making changes to the videos if the reviews are bad.   

Wednesday 9 April 2014

Grown Out Of Tony Mitton



1.Present yourself well and use good posture.
2.Look confident.
3.Use eye contact with the audience.
4. Make yourself familiar with the poem.


Tuesday 8 April 2014

Drift Dennis Glover




1. He was born in Dunedin New Zealand.
2. He was born December 9 1912.
3. H was in the New Zealand Navy in WW2.

Chinese Tones

Answer these questions about Chinese tones

What is pinyin?

Chinese is a tonal language. What does this mean? Each letter can be said differently.

How many tones are there? 4

Describe how your voice changes for each tone
Tone 1 A high flat sound.
Tone 2 A rising sound.
Tone 3 A down and up sound.
Tone 4 A down sound (angry)

Finish this sentence: Chinese characters don’t show how words should sound.


What does ba (tone 1) mean? The number eight.

What does ba (tone 4) mean? Dad


Play this tones game (guess the tones)