Yes, the atmosphere is at atmospheric pressure, or 1 ATM. A column of air one square inch in cross-section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 psi (pounds force per square inch).
The total mass of the atmosphere can be calculated approximately by first taking the earth's total surface area (A = 4.pi.R2, R=6371000m) and multiply it by the global mean atmospheric pressure of 98550Pa to get the atmosphere's total weight in Newton. Next, divide by the average gravitational acceleration g=9.806m/s2 to get the approximate mass of the atmosphere. This yields an answer of 5.126x1018 kg that is actually about 0.4% too small, since gravity diminishes with height, and the effective total area applicable to each layer of the atmosphere increases with height. When all this is taken into account, a more correct value of 5.148x1018 kg is obtained.
5.28 x 10000000000000000000 kg is the weight of air for the entire atmosphere.
Multiply atmospheric pressure, about 1 x 10^5 N/mm, times the earth's surface area, about 1 x 10^21 mm , to get 1 x 10^ 26 Newtons or about 25 x 10^24 lbs.
The weight of the air pressing down on earth is the measure of air pressure. At sea level, it is equivalent to 101.325 kPa.
14.7lb/in2 at sea level plus or minus atmospheric pressure at the time.
The amount of weight is when you step on a scale. that's how much
Atmospheric weight is called "barometric pressure" which is measured by a barometer.
Air Pressure
Air pressure.
According to the Law of Superposition, in an undisturbed column of rock layers, the oldest layers are at the bottom, the youngest at the top. Logically, there must be a first layer, without which the succeeding layer would not rest. Deposits of sediments that appear in sedimentary rock are laid down over long periods of time and often appear layered, like the pages of a book that starts at a certain time and goes back further in time with each page.
Question:What is a difference between a meteoroid and a meteorite?Answer:The difference between a meteoroid and a meteorite is that a meteoroid is a rock that is trapped by Earth's gravity and pulled down to Earth's atmosphere. As it falls it vaporizes. A meteoroid is also a rock that is trapped by Earth's gravity and pulled down to Earth's atmosphere but, does not vaporize completely and hits the ground.explain why m/s/s=m/s2
Air pressure
The strength of the force in each direction between the earth and any mass is called the "weight" of the mass. The force is equal in both directions, which means that the weight of the mass on earth is the same as the earth's weight on the mass. The force acts along the line between the center of the earth and the center of the mass. The direction toward the center of the earth is customarily referred to as the 'down' direction, and toward the center of the mass as the 'up' direction.
Air pressure
Air pressure
Because as you get closer to the surface of the earth, the more air that is on top of you. At the top of the atmosphere, there is no air, and everything is a vacuum, where you have no weight. When you get close to the earth, the weight of the air builds until it when you're at the very lowest point of the earths surface, all the air in the atmosphere above you is pressing down.
The air pressure on Earth is caused by the weight of the atmosphere pressing down. This pressure is also known as "atmospheric pressure". Normal atmospheric pressure at the surface of the Earth is 101 kPa, 760 mm Hg, or 14.7 psig
There is less weight pressing down from above as the distance toward the surface decreases.
humidity
Although you didn't mention air pressure, that seems to be what you are asking about. Air exerts pressure because air has weight, and we have a very thick atmosphere (which extends upward for about 200 miles) pressing down on us. But at higher altitudes, such as a mountain top, there is less air pressing down, since only the part of the atmosphere that is higher than where you are, is pressing down on you.
The idea is to calculate Earth's surface area, using the formula for the area of a sphere. Then multiply pressure times area, to get force. The weight of the atmosphere is simply the force with which it presses down upon Earth.
Atmospheric pressure
When you are at a higher altitude, like on a mountain, you are farther up in the atmosphere meaning there is less air pressing down on you. When you are at a lower altitude, like at sea level, there is more air pressing down on you because there is more atmosphere above you.
Because of the weight (pressure) of all the stuff above pressing down. For solids this results in hardly any change in volume, and for liquids just the same. But for gases, such as the atmosphere, it has a large effect so that at 100miles or so above the earth, air prsssure and therefore density is practically zero.
Air pressure is the weight of the atmosphere pressing down on the earth. Temperature raises and lowers the pressure by changing density of said air. For example check the air in your cars tires cold, then hot-with no other change besides temperature, you will get different readings-this is normal and the reason you are supposed to adjust when cold.