They are found within the bounds of the ocean floor and in the transitional zone and are divided into two morphological typesâflat, or subhorizontal, and hilly. Flat abyssal plains are confined to the margins of ocean basins or to the centers of the basins of epicontinental seas. Hilly abyssal plains occupy a large part of the bottom of the ocean floor. The surface of the flat abyssal plain is characterized by exceptional evenness, with floor gradients of less than 0.001. Starkly contrasting solitary seamounts, evidently of volcanic origin, are also found.
The first person to do so ever was as early as the 3rd century BC by Aristarchus of Samos. Unfortunately, his notion gained only few supporters and was summarily rejected. Later in the 16th century, Nicholas Copernicus presented a mathematical model. In the next century, Johannes Kepler made inclusions of elliptical orbits, and Galileo Galilei presented supporting observations made using a telescope.
No, Galileo is credited with discovering the telescope. The discovery that the Earth was round was thousands of years earlier. He did agree with Copernicus that the earth revo â¦ lved around the sun. Around 150 AD, Claudius Ptolemy, a Greek geographer, drew maps that showed the earth as curved.