A) The elevation finder can help you find out the elevation of land for a country, place or other location. You can even figure out the land elevation below the sea or ocean. You can do this by typing in an address, name of a place, coordinates etc., into the corresponding input fields above.
I saw an experiment in a small ramshackle museum in Ecuador on the equator. There was a sink on a stand. When it was placed a metre on one side of the equator the water circled clockwise as it drained, one metre on the other side the water drained anti-clockwise and when directly over the equator the water drained, straight down, with no rotation.
The Moon's gravity pulls the oceans on the side of the Earth nearer to it more than it pulls the Earth itself, causing a bulge of water. On the opposite side (away from the Moon), the Earth is pulled more than the oceans, and this leaves behind a slightly smaller bulge of water.