عنوان الموضوع : إلــــــــــــى ليــــــــــــنة الصغيــــــــــــرة ^^ ♥►↕↕♫ ثانية ثانوي
مقدم من طرف منتديات العندليب



أهلااا اختي

هاهو البحث راني كملتولك
ان شاء الله يفيدك


هو مختصر و بسيط

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ربي يوفقك اختي





>>>>> ردود الأعضـــــــــــــــــــاء على الموضوع <<<<<
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>>>> الرد الأول :

First
We know that the balloon is blown explode if brought him a lighted match.
But in this experiment , we will see how we can put
a Inflated balloon of a lighted match without exploding.
Work steps:
First:
Bring two balloons
Bloat a balloon and close it .then put about a quarter cup of water in the second balloon then bloat it and close it .
Second :
Lit amatchstick and put it under the first and second balloon and allow the flame to touch the balloon


What happened?


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>>>> الرد الثاني :

Explanation:
When we bring closer the flame on the first balloon we observed Stretch the rubber component of the balloon by heat became prone areas of heat weak and could not resist the pressure of the air inside the balloon burst.
In the second balloon the water absorbed most of the heat because the water is the best materials in the absorption of heat... Each 1 gram of water absorbs 10 times the amount of heat absorbed by 1 gram of iron when the temperature rises by one percentage.
So the most of the heat heats the water of the balloon And heats the surface of the balloon a little bit.


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>>>> الرد الثالث :

hada lba7t

khetii 3lach ma7abch yatla3lek

!!!



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>>>> الرد الرابع :


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>>>> الرد الخامس :


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