Answer 1
It would be difficult indeed to identify anything that "all Jews" do.
After being an active one for a long time, I certainly can't do it.
Answer 2
Religious Jewish males wear a kippah and/or hat. Less religious Jewish males may or may not wear a kippah, but they will usually don a kippah when attending synagogue, and will often wear one during Hebrew school classes. Non-religious Jewish males will typically not wear a kippah, but there are exceptions.
Jewish females don't wear kippahs. Religious married women wear a wig or other hair-covering such as a scarf.
Answer 3
No, for the most part, only Orthodox Jews wear kippot (pl) all the time. However, most male Jews will wear a kippah in synagogue.
In Orthodox Judaism, women do not wear kippot.
In Liberal Judaism, women can choose whether or not they wish to wear a kippah. If they take on the additional obligations of tzitzit and tefillin, they are required to wear a kippah.
Wearing a kipah (yarmulka) is an ancient custom whose purpose, as stated in the Talmud, is to signify awareness that God is above.
Religious Jews wear the kipah all day, indoors and out. Less religious people wear it in the synagogue. Pupils in Hebrew school usuallt wear a kipah (at least) during the school hours.
You would wear a kippah on your head; it is a form of skullcap. Religious Jews wear them everywhere they go, while some less-religious Jews wear them only in the synagogue.
A kippah, or yarmulke. http://en.wikipedia.org/wiki/Kippah
Most Orthodox and Ultra-orthodox Jewish men wear a kippah all the time. Married women in this group also cover their hair in public. Some non-orthdox Jews also wear a kippah all the time, particularly some rabbis and cantors.
Jewish men are commanded to cover their head in respect to God at all times, especially while praying, or at a religious event or service. The main form of head cover is a Kippah, or Yalmukah. However, only Orthodox Jews wear Kippahs at all times. Most Reform, Conservative, and some Modern Orthodox Jews do not wear kippahs at all times, and only wear them while at Temple, or another religious event.
No, it`s not proper for a Gentile to wear a kippah all the time as this is a Jewish tradition that doesn`t apply to non-Jews.
No. The kippah is a reminder of God's eternal presence. Some Jews also see it as a separator between themselves and God, or a sign of respect for God.
Jewish-style kippahs are generally worn only by Jews. But according to Jewish law, a regular cap or hat may serve the same religious function as a kippah.
On the top of the head. (Anywhere else it would fall off).
It is unknown. There is no mention in the Torah of Abraham wearing a kippah.
they wear it to show others and themselves that there is a G-d above us
No. Judaism calls for covering the head but does not specify the type of head-covering. Religious Jewish males usually wear a kind of cap (kippah; yarmulka) and/or hat.
Jews do not generally wear anything specifically for the purpuse of showing that they are Jews. During the Holocaust, they were forced to wear yellow stars with the word JEW on them to show that they were Jews. Most Jews wear the same things non-Jews wear. Among the Orthodox, some women wear long sleeve shirts, with long skirts that cover their legs. Married women usually cover their hair in public. Orthodox women are forbidden to wear trousers. Orthodox Men wear a kippah or yarmulke on their heads (though many non-orthodox men also wear them in the synagogue) and some also wear another hat over their kippah. Under their shirts, men wear a garment called tzeetzeet katan or tzitzis, which is similar to an undershirt with special fringes at the bottom. The fringes may be exposed or tucked in, according to the community. Modern Orthdox Men generally dress exactly the same as non-Jewish men, with the exception of the kippah and the tzeetzeet (with the fringes tucked in). There are also other ritual garments associated with specific events and holidays.