The moon's gravitational force pulls on water in the oceans so that there are "bulges" in the ocean on both sides of the planet. The moon pulls water toward it, and this causes the bulge toward the moon. The bulge on the side of the Earth opposite the moon is caused by the moon "pulling the Earth away" from the water on that side.If you are on the coast and the moon is directly overhead, you should experience a high tide. If the moon is directly overhead on the opposite side of the planet, you should also experience a high tide.
During the day, the Earth rotates 180 degrees in 12 hours. The moon, meanwhile, rotates 6 degrees around the earth in 12 hours. The twin bulges and the moon's rotation mean that any given coastal city experiences a high tide every 12 hours and 25 minutes or so.
Hope this helps! :)
They differ in some social and ritual customs, and in some aspects of their cuisine.
These 'surface' differences stem from their respective historical geographic origins. The history of the 'Sephardim' springs from western Europe and North Africa, including Spain, Portugal, Turkey, Morocco, Egypt, and Arabia. The history of the 'Ashkenazim' is rooted in Eastern Europe, including Germany, Poland, the Baltics, Russia, and the 'Stans' ... Tajik, Kazakh, Uzbek, etc.
One fascinating feature of this split, isolated evolution of Judaism ... and there are many ... is the fact that even though the two streams evolved, with almost zero contact, for as much as 1,000 years, a Sephardic Torah scroll and an Ashkenazic Torah scroll are totally identical, down to the last character in every one of their 10,290 lines of text written in 245 columns.
D. Refugees from Southeast Asia seeking to escape political persecution.