Orthodox follow halacha; Reform don't.
Yes. My maternal grandmother was Orthodox and married a Reform Jew and she switched to Reform Judaism.
Yes. Orthodox Jews do "everything by the book". Reform Jews do anything they want.
The Reform Jews are not, strictly speaking, entirely Jewish anymore, whereas the Orthodox Jews are traditional and believe in the sanctity of the prayers and building.
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).
The Reform Jews are not, strictly speaking, entirely Jewish anymore, whereas the Orthodox Jews are traditional and believe in the sanctity of the prayers and building.
No. Every year the Orthodox Jewish population seems to be shrinking. Reform Jews is now the largest group of Jews.
orthodox Jews are traditional and reform Jews have mordenised their traditional ways
-reform -conservative -modern -orthodox -frum
there is conservitive and reform
only about 10% of Jews are orthodox.
Technically, there is no conversion required for the vast majority of Orthodox Jews who might want to be accepted into a Reform congregation. If an Orthodox Jew shows up in a Reform congregation and takes part in a service, they will be counted as fully Jewish without question. The great difficulties come when Reform Jews get interested in Orthodox Judaism, because Reform accepts as Jews people who are not considered as Jews by the Orthodox -- The Orthodox to not recognize the legitimacy of Reform conversions nor do they recognize as Jews those who claim Jewish status through patrilineal descent.(OK, there is one difficult class where Reform Jews might ask for conversion. The child of a Jewish mother and a non-Jewish father who grew up in a non-religious household would be welcome as a Jew in an Orthodox congregation but might face questions in a Reform congregation because, technically, the Reform acceptance of patrilineal descent is contingent on having a religious upbringing.)
No, the Reform and Liberal movements has the largest number of followers.