No. But the majority are, since these movements began in America and the Western countries. See also:
No, not all Reform and Conservative Jews are Ashkenazi. Both movements include Jews from various backgrounds, including Ashkenazi (Eastern European), Sephardic (Spanish and Portuguese), Mizrahi (Middle Eastern and North African), and other regional backgrounds. They encompass a diverse range of Jewish traditions and customs.
only about 10% of Jews are orthodox.
There are many differences among American Jews and Israeli Jews. In the United States, the majority of Jews are Ashkenazi (though there are some Sephardic Jews). Also, American Jews often make specific distinctions between Reform, Conservative, Secular Humanist, Reconstructionist, and Orthodox, whereas in Israel, people tend to be secular Jews, reform, or Orthodox. In the U.S., Jews have to make an effort to celebrate the holidays or go to services, but in Israel the holidays are essentially automatically in the calendar, and Judaism is kind of all around. Some American Jews know few other Jews, but the majority of Israeli Jews know lots of other Jews.
Ashkenazi Jews live all over the world and speak the languages of their countries. The most common languages spoken by Ashkenazi Jews are:EnglishHebrewFrenchRussianSpanishYiddish**Yiddish was once the main daily language of Ashkenazi Jews, but today less than 1 million can speak it fluently, and most of these speakers are elderly. Fluent Yiddish speakers mainly live in Belarus, Israel, and Argentina.
Orthodox Jews follow nearly all the laws. Conservative follow some, but not all. Reform Jews follow little or none of the laws.
New answer: Reform Jews tend to be less strict than Orthodox, Ashkenazi, Sephardic Jews, but that doesn't mean that they are not observant at all. They wear the kippah (skull cap), tallitot, kittel, etc. Reform services are a lot more relaxed in terms of dress codes, though. However, that doesn't mean the Jew is more relaxed in their attitude to G-d. Old answer: pretty much anything anyone else wears
Conservative Jews are less strict than Orthodox Jews. Not all Conservative Jews keep Shabbat.
Sephardi is one major group of Jews, with family roots tracing back to Spain, China, Turkey, Iran, and other countries. The other major group is Ashkenazi, with roots tracing back to Germany, Poland, Russia, etc. Each group has slightly different traditions in prayers and holiday rituals. For example, Sephardis eat rice on Passover and Ashkenazi do not. And then there are Jews like me, who converted to Judaism and have no family history of Sephardi or Ashkenazi. Generally a convert will take on whatever are the "roots" of the congregation they join. Traditionally after marriage the woman takes on the tradition of the husband, the same as she takes on his last name in America. I do know that times have changed, and there are probably couples who decide together which customs to follow. All of the above information regarding rituals and prayers is from the standpoint of Orthodox Judaism. I don't think there is a difference in religious practice for Sephardi vs Ashkenazi in the Reform synagogues, and maybe not in Conservative. Genetically, there are several hereditary diseases known to be prevalent among Jews of Ashkenazi background. Other than Tay-Sachs, I don't know what other diseases.
Adding somewhat to the response from Prioktan 918, while Orthodox Jews are most likely to accept a conversion supervised by Orthodox rabbis, the Conservative movement is more concerned with the nature of the conversion. If the traditional requirements of study, immersion in a mikveh (ritual bath), circumcision for a man and appearance before a bet din (rabbinic court) are followed, the conversion is likely to be accepted, whether conducted by Conservative, Reconstructionist or Reform rabbi.
First of all, it should be stressed that all Jews have the same Torah. Jews may be classed according to lifestyle, geography, or outlook. Lifestyle: there are Jews who are more stringent (Orthodox) or less stringent (Conservative, Reform) in their observance of the Torah's commands. Geography: there are Ashkenazi (Western) Jews and Sephardi/Mizrahi (Eastern) Jews. Ashkenazim lived in Europe, while Sephardim lived in pre-expulsion Spain and North Africa. (There are others too, such as Yemeni, Romaniote, and Persian Jews, but the above are the largest groups.) All Jews are interrelated and originate in the Middle East, as shown by DNA analyses. Outlook: among the religious Jewish communities, there are the Yeshiva community, Hassidim, and Modern Orthodox. (Hassidim are the ones who wear long frock-coats.)
Orthodox Jews are the people that want to keep tradition. Reform want 2 change things. I think that Orthodox Jews chose to break away from orthodox tradition and become reform Jews because they didn't like the whole tradition of orthodox Jews and all the rules they had to stick to such as observe all 613 laws as strictly as possible. So I think they changed so that they could have a bit more freedom from all these rules although there were still rules being reform Jews but at least if they change to reform Jews it changes (reform means change things).
In ancient times, there were up to 4 sects of Judaism:The PhariseesThe SaduceesThe Essenesthe NazarenesIn modern times, there are more than 4 different groups within Judaism:Ultra-OrthodoxHarediModern OrthodoxConservativeMasortiReformProgressiveLiberalReconstructionistRenewalHumanistCulturalAlso groups by ethnicity:AskhenazicSefardicMizrahiBeta Yisrael
No. That applies mainly to Orthodox and Conservative Jews.