Elevation
The height above sea level of any point on Earth's surface is called its elevation.
The acceleration due to gravity decreases with height above the Earth's surface according to the inverse square law. Therefore, at a height of approximately 3186 km above the Earth's surface, the acceleration due to gravity would be half of what it is on the surface. This is known as the point of geosynchronous orbit.
Altitude
Elevation
altitude
Elevation
The height of an object above Earth's surface is known as its altitude or elevation. It is typically measured in units such as meters or feet from the surface of the Earth to the object. This measurement is important in fields such as aviation, geography, and geology.
It decreases
elevation
The height above sea level at any point on Earth's surface is referred to as the elevation or altitude.
At a height of 6400 km above the Earth's surface, the acceleration due to gravity can be calculated using the formula ( g' = g_0 \left( \frac{R}{R + h} \right)^2 ), where ( g_0 ) is the acceleration of gravity at the Earth's surface (approximately 9.81 m/s²), ( R ) is the Earth's radius (about 6400 km), and ( h ) is the height above the surface. Substituting the values, the effective gravity at this height is approximately 2.45 m/s². This demonstrates that gravity decreases with altitude, being significantly weaker at that height compared to the surface.