Yes the pressure at 3 Km from sea level is less than the pressure at 1 Km from sea level because air pressure becomes lower as the taken height above sea level increases. This is basically due to there being less weight upon each m^3 of air to press the air together.
Earth: about 100,000 Pascal at sea level. 100,000 Pascal is also known as 1 bar. Venus: about 92 bar at surface level.
Magnetosphere.
High. From Wikipedia: "[The South Pole] sits atop a featureless, windswept, icy plateau at an altitude of 2,835 meters (9,306 ft), about 1,300 km (800 mi) from the nearest open sea at the Bay of Whales. The ice is estimated to be about 2,700 meters (9,000 ft) thick at the Pole, so the land surface under the ice sheet is actually near [or lower] than sea level."
Forget the sea level. The speed of sound is dependent on the temperature and not on the air pressure. At 20 degrees Celsius or 68 degrees Fahrenheit the speed of sound is 343 m/s or 1236.3 km/h or 1126.7 ft/s or 667.1 knots. Scroll down to related Links and read the short article "Speed of sound - temperature matters, not air pressure".
Yes the pressure at 3 Km from sea level is less than the pressure at 1 Km from sea level because air pressure becomes lower as the taken height above sea level increases. This is basically due to there being less weight upon each m^3 of air to press the air together.
200 km above sea level.
80 km
Around 4 km
Earth: about 100,000 Pascal at sea level. 100,000 Pascal is also known as 1 bar. Venus: about 92 bar at surface level.
Obviously there is no sea, so for for Mars, the zero elevation is defined by the mean martian radius, 3382.9 kilometers, and the [average] atmospheric pressure [which] is 6.1 millibars.
The temperature at sea level is 20 degrees celsius. What is the temperature at the top of a mountain 3000 m above sea level? Decrease of temperature with height: 6.5 Kelvin per km to about 11 km altitude. That is for a height of 3 km = 3000 m about 6.5 times 3 = 19.5 degrees colder than the ground. So if at ground it is 20°C, at the top of the mountain (3000 m) it will be about 0°C.
Mt. Vesuvius is 4300 feet or 1.31064 km above sea level.
vapour pressure of air is 760mm or 101.3kpa at sea level while the pressure at an elevation 0.5 km in mountain lowers down, so the egg will take longer time tocook at 0.5km elevation.
It has the ozone layer It starts at 12 km ends at 50 km of sea level
Largest: Caspian sea(371,000 sq. km.) Longest: Caspian sea (1,223 km.) Deepest: lake baikal ( 1,620 m. below sea level)
about 5,115 km The Outer Core spans from 2,890-5,150 KM (1,790-3,160 Miles) down from sea level. The Inner Core spams from 5,150-6,360 KM (3,160-3,954 Miles) down from sea level.