The most common questions you have heard or encountered in your life # Part4

Hello people , this is the 4th post of the most common questions you have heard or encountered in your life :

• Why the electricity shock us sometimes when we touch someone ?
• How birds feathers are shaped ?
• If the child is born on an international flight over the ocean, what is nationality will be placed on his or her birth certificate ?
• Why are the sounds of the ambulances different ?

Why the electricity shock us sometimes when we touch someone?

Sure, something like this has already happened to you when you touch someone or something where you feel a simple electrical shock and this happens because of static electricity , all this releases from the atoms that make up all the substances surrounding us in this universe , you may know that each atom consists of positively charged protons, negatively charged electrons and neutrons , In most cases, atoms are neutral , they contain the same number of protons and electrons .
Static electricity is generated when this charge is unbalanced , when someone or something acquires additional electrons, this negative charge will seek to gain a positive charge until it becomes neutral , this is why we feel an electricity shock .

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How birds feathers are shaped ?

Bird feathers consist of keratin, the same substance as nails , bird feathers are called the Integumentary system , which is the outer covering that covers the entire body, as is the case with our skin , so how the feathers come out ?
Everything happens in the skin , the cells of the bird form a small follicle that is very similar to the pores of our skin , from which the feather comes out .

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If the child is born on an international flight over the ocean, what is nationality will be placed on his or her birth certificate ?

Do you imagine yourself traveling on the plane and suddenly a pregnant woman feels the symptoms of labor although this seems strange it does happen , if the child is born above the ocean in international waters, then at that moment he gets the nationality of his mother immediately , but if the plane was flying over some countries, he can have the nationality of that country , but this depends on the laws of these countries, which vary from state to state .
For example , if the plane was flying over the United States, the child can obtain US citizenship , but if the plane was flying over North Korea, the child can not obtain that nationality and in this case he will get the mother's nationality .

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Why are the sounds of the ambulances different?

Ambulances have a different types of sounds to indicate what is happening or to the type of emergency and to communicate with other drivers.

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Previous topics :

• The most common questions you have heard or encountered in your life # Part1 :
  https://steemit.com/life/@otmanezom/the-most-common-questions-you-have-heard-or-encountered-in-your-life-part-1

• The most common questions you have heard or encountered in your life # Part2 :
  https://steemit.com/life/@otmanezom/the-most-common-questions-you-have-heard-or-encountered-in-your-life-part2

• The most common questions you have heard or encountered in your life # Part3 :
  https://steemit.com/life/@otmanezom/the-most-common-questions-you-have-heard-or-encountered-in-your-life-part3-lhcz2de1