Men cover their heads as a reminder of the fact that there is a being "above them", i.e. G-d.
Religious Jewish men cover their heads all the time, not only while praying.
Dignified and modest clothing. Men, and married women, cover their head.
Jews pray to God
Jews pray to God.
Jews pray in a synagogue.
Jews pray to God.
Orthodox Jews do that. It's to provide the most complete concentration while praying.
Jews pray only to God, not to any person or prophet. Muslims also pray only to God and definitely do not pray to their prophet!
The only Christians that would pray to Mary are Catholics, so the answer is no. Some Messianic Jews are Catholic, but this is rare. The majority of Messianic Jews are Protestant Evangelicals and pray as they do.
They pray in the synagogue (a.k.a. Shul).
Christians and Jews believe that there is one true God. Christians and Jews pray to the same God.
Jews pray facing the east-in the direction of Jerusalem
it is important as it is a jewish tradition they are passed down from a farther to his son who then gives it to his son and so onbecause they pray with it