Diagram Of Sphere. The earth can be thought of having three different spheres. This presentation template contains a creative 3d sphere diagram for powerpoint template.
A sphere from greek σφαῖρα sphaira globe ball is a geometrical object that is a three dimensional analogue to a circle in two dimensional space. The prefix hemi means half and a sphere as already learned is a 3 d shape that is perfectly round. On the celestial sphere with declination 40 degrees notice that the south pole is below the horizon and invisible for an observer located at 40 degrees n latitude rotating the diagram so the zenith is up make it easier to visualize the local sky.
Consider the diagram below.
In essence two identical hemispheres make a sphere. Visual on the figure below. Cg centre of gravity. A sphere is the set of points that are all at the same distance r from a given point in three dimensional space.