it is about 500-650 kilometers above earth's surface.
The part of the sun that lies directly above the visible surface is called the chromosphere. It literally means "sphere of color".
Because it just does.
Altitude is a measure of the height of something above sea level, or above some point on Earth's surface.
High-altitude burst Generically speaking, anything that occurs above Earth's surface is referred to as an airburst. Be that one inch above or 1,000 miles above. There are three types of nuclear blasts: the afore mentioned air burst, surface burst (that detonates upon impact, and the subsurface burst that detonates by timer or at depth. It occurs to me that your question may be worded confusingly, and you could mean the intent of detonating a nuclear device, specifically a thermonuclear device at high altitude. If this is the case, the result is an EMP (electron magnetic pulse), intended to knock out a power grid and solid state components.High altitude burst
high altitude burst
The surface that is right above the epicenter of the earthquake,or the place that is right above where the earthquake starts.
That is called gravitational potential energy.