مساعدة بحث تجربة علمية بسيطة بالانجليزية

[berech houssam]

مساعدة بحث تجربة علمية بسيطة بالانجليزية

[walid.422]

السلام عليكم اخي الكريم ساحاول مساعدتك . ان امكنني ذلك
اخوك وليييييييييييد:19::19::19:

[walid.422]

يا اخي اتمنى لك كل التوفيق و النجاح و للجميع ان شاء الله .........من ولييييييد

التجربة العلمية بالانجليزية كالتالي


Scientific experiments
The first experiment
:


Needle floating on the surface of the water

You can float a needle on the surface of the water?
The following experiment that enables you to check it out.
Materials needed:
Cup glass.
Water.
****l needle.
Tissue.
Cleaning fluid.
Action Steps:
1. Pour the water in the cup.
2. Put the needle on tissue paper and placed gently on the surface of the water. What do you notice?
3. Apply a drop of cleaning liquid in the cup. What do you notice?

What happened?
When you put the cloth on the surface of paper towel and dive into the water longer needle floating on the surface of the water, and the password that the surface of the water act as a membrane stretched over it a needle, called this property of liquids tighten surface.
But when you put a drop of cleaning liquid in the water, the intensity of the surface will be less sinks the needle.
Scientific interest
You can a lot of small insects on the surface of the water to stand and walk by taking advantage of the phenomenon of surface tension of water
و شكرااااااااا ادعي لنا بالنجاح :mh31::19::mh31:

[*منارةツالبحر*]

شكرا جزيلا لك أخي وليد

[berech houssam]

شكرا لك شكرا شكرا

[berech houssam]

اتمنى لك التوفيق و النجاح في حياتك

[PHARM2011]

شكرا على المساعدة بارك الله فيك اخي وليد لكن اريد تجربة علمية كالتخمر او التنفس ارجو المساعدة في اقرب وقت

[fenroukaia]

thank you for your help

[sandy belle]

thank you so much