Because most satellites are not 'geostationary'. A geostationary satellite orbits the Earth at the same speed that the Earth spins on its axis - such as the GPS grid, or TV relay satellites. Most satellites travel faster or slower than the Earth spins.
If its orbit is tilted relative to the equator,it will move over different parts of the earth.
When the moon pulls on different parts of the Earth it causes tides
A polar orbit or high-inclination orbit. In polar orbit, the satellite passes over the world from pole to pole, while the Earth spins beneath it. Each orbit would cover a different area.
tides
light from the sun that is not blocked by the earth
If the final speed is not the exact speed required for a circular orbit, the satellite will travel in an ellipse around Earth; the time for one revolution, as well as the highest and lowest parts of the orbit, will be different from the expected values. This may, or may not, be relevant, depending on what the satellite is used for. For example, a satellite may be designed to pass over a certain part of Earth every 24 hours. If the orbit is wrong, the timing - as well as the part of Earth over which it moves - will be off.
If its orbit is tilted relative to the equator,it will move over different parts of the earth.
We know based on the timing and paths taken by seismic waves that such waves travel through different parts of the Earth at different speeds.
The gravitational force varies by earth density and altitude.
When the moon pulls on different parts of the Earth it causes tides
When the moon pulls on different parts of the Earth it causes tides
A polar orbit or high-inclination orbit. In polar orbit, the satellite passes over the world from pole to pole, while the Earth spins beneath it. Each orbit would cover a different area.
the earth is made up of diferent parts and some parts of the earth is less dense than the other
Tilting of the Earth
The outer part of the earth is the crust
as there are different environments on earth, it is possible for landforms to be different in various parts of our planet :)
Because the earth constantly revolves about the sun and rotates on its axis, so different parts of the universe are visible from any one location on earth at different times.