at about 9km above the surface of the sea.
No it does not. Its weight, however, does.
9.8m/s
The explosion is believed to have been caused by the air burst of a large meteoroid or comet fragment at an altitude of 5-10 kilometres (3-6 mi) above the Earth's surface.
No, air pressure decreases with altitude. As you go farther towards earth's surface, the weight of the atmosphere presses down with increasing force.
Gravitational potential energy - it depends on the distance from the centre of gravity, so on Earth it depends on the height above the Earth's surface
altitude
Altitude
altitude
Altitude is a measure of the height of something above sea level, or above some point on Earth's surface.
No it does not. Its weight, however, does.
By convention in the aerospace industry, Space is considered to be above an altitude of 100 km from Earth's surface.
Its called altitude & measured in m / ft (unit of length)
The greater the altitude, the lower the air prassure.
Cirrocumulus clouds are very high altitude clouds that form in the troposphere. They form between 16,000 feet and 39,000 feet above the surface of the Earth.
9.8m/s
"at an altitude of 400 kilometres (250 miles), equivalent to a typical orbit of the Space Shuttle, gravity is still nearly 90% as strong as at the Earth's surface" -- Wikipedia: Earth's gravity # Altitude
The stratosphere is situated between about 10 km (6 mi) and 50 km (30 mi) altitude above the surface at moderate latitudes, while at the poles it starts at about 8 km (5 mi) altitude.