What would be the Earth position in the Galaxy if ..?

Questions: 1). What changes would be in the galaxy if the entire Earth drains? 2). Would it reduce gravity..if yes what could happen? 3). Would it speed up in rotation? 4). Would the Sun be stronger/weaker on Earth? 5). How would the wind behave if it loses a large amount of water by evaporating the Seas? 6). The Tectonic Plaques would collapse? 7). Any other comments..