Answer:
Gravity
Step-by-step explanation:
The larger the object, the bigger and more powerful its gravitational field is. That is how tides and waves are made. The moon is a bit more than 1/4 of earths size. This may seem small, but its actually VERY big considering the fact that the earth is 7,917.5 miles big in diameter. AT night, the tide is more major and waves are larger because the moon is directly above the ocean, using its gravitational force to pull at the waters. Same with any other object. If you fly over the Mir Mine, an abandoned diamoned mine in russia, that you woud be sucked into the 1,722 feet pit. If you try to jump off of a falling building, instead of leaping away, you would be pulled down with the building.