A map.
i think its curved
It is the Trajectory.
a map
The two dimensional representation of the Earth's surface on piece of paper is called a map. Maps can show an area in great detail or in very broad outlines.
A map.
A map is not a three dimensional representation of earth's surface. The best three dimensional representation of earth's surface is a globe or a topographical map.
we have a horizon which means that we cannot see all of the earths surface
Subsidence.
Assuming you are referring to a representation of the earth then it would be a map.
Projection
It is called the crust.
Height above earths surface is called elevation