There are a few reasons:
1. Death in the family
2. Refusing to follow in parents's footsteps
3. Intermarriage
4. No longer wanting to be Orthodox
5. Not keeping kosher
6. Tattoos and body piercing
7. Not waiting until marriage to have sex
If you are an orthodox jew the men and women sit in different places but if you are a reformed jew you can sit anywhere
Yes. It doesn't matter which family member dies.
No.
Yes, non-Orthodox Jews can become Orthodox by becoming more observant. Non-Jews can become Orthodox Jews through Orthodox conversion.
Orthodox Jews are strictly observant. Hassidic Jews are even more strict.
Orthodox and Ultra-Orthodox Jews are strict followers of Jewish law.
Unfortunately, in Israel, only Orthodox Jews get all the special privileges.
They are Jews who keep the Torah.
Haredi Jews are ultra orthodox Jews found around the world.
Orthodox Jews or Torah Jews.
Symbols do not destinguish Orthodox Jews from other kinds of Jews. Orthodox Jews are distinctive in that they adhere to the idea of the of the binding nature of Jewish law.
Shiva (a Hindu Goddess) is not celebrated by the Jews. Jews observe a 7 day mourning period after the death of a family member. This morning period is called Shiva, but it is not a celebration. It is a time of great sadness.