Why does air pressure decrease when altitude increases?
As altitude increases, the amount of gas molecules in the air decreases—the air becomes less dense than air nearer to sea level. This is what meteorologists and mountaineers mean by "thin air." Thin air exerts less pressure than air at a lower altitude.
Why does air pressure increase as altitude increases?
The gravitational attraction* between the earth and air molecules is greater for those molecules nearer to earth than those further away — they have more weight — dragging them closer together and increasing the pressure (force per unit area) between them.
Which statement accurately describes the relationship between air pressure and altitude?
Which statement accurately describes the relationship between air pressure, air density, or altitude? As altitude increases, pressure increases.
Which statement accurately describes the relationship between air pressure air density or altitude as altitude increases pressure increases?
The correct statement is denser exerts more pressure than less dense air. Explanation: this is because with increase in density of there are more molecules of air that are packed within a particular volume of air.
Why does air pressure decrease as altitude increases quizlet?
As the altitude increases, the air becomes thin because the gas molecules become fewer. This is the reason why the air pressure decreases as you go up.
What happens to air pressure as altitude increases quizlet?
As altitude increases, air pressure will decrease As altitude increases the gas molecules that make up the air spread further apart. Smaller number of particles pushing down on a given area means lower air pressure.
Which statement accurately describes the relationship between air pressure air?
The correct statement is denser exerts more pressure than less dense air. Explanation: this is because with increase in density of there are more molecules of air that are packed within a particular volume of air.
What is the relation between atmospheric pressure and temperature with altitude?
As altitude increases, atmospheric pressure decreases. One can calculate the atmospheric pressure at a given altitude. Temperature and humidity also affect the atmospheric pressure. Pressure is proportional to temperature and inversely proportional to humidity.
What is the relationship between the density of air and the altitude of the atmosphere?
Air density is higher at lower altitudes. There is more space between air molecules at higher altitudes. There is less oxygen to breathe at the top of a high mountain than there is at sea level.
How does air pressure change with altitude and elevation quizlet?
Air pressure decreases as altitude increases. As air pressure decreases, density decreases.
Why does temperature decrease as altitude increases?
The basic answer is that the farther away you get from the earth, the thinner the atmosphere gets. The total heat content of a system is directly related to the amount of matter present, so it is cooler at higher elevations. The heating of the earth itself also plays a role.
What happens to air pressure as altitude decreases quizlet?
As altitude increases, air pressure will decrease As altitude increases the gas molecules that make up the air spread further apart. Smaller number of particles pushing down on a given area means lower air pressure.
Why does pressure always decrease with altitude quizlet?
Why does pressure always decrease with altitude? The pressure at any level in the atmosphere can be interpreted as the total weight of the air molecules above a certain elevation. Therefore, as the altitude increases, there are fewer molecules above the surface.
Which of the following best describes the relationship between the pressure and the temperature of a gas?
The pressure of a given amount of gas is directly proportional to its absolute temperature, provided that the volume does not change (Amontons's law). The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law).
Which of the following best describes the relationship between the pressure and the amount of a gas?
This relationship between pressure and volume is known as Boyle's lawA law that states that at constant temperature, the volume of a fixed amount of a gas is inversely proportional to its pressure., after its discoverer, and can be stated as follows: At constant temperature, the volume of a fixed amount of a gas is …
Why does temperature decrease with increase in altitude?
The basic answer is that the farther away you get from the earth, the thinner the atmosphere gets. The total heat content of a system is directly related to the amount of matter present, so it is cooler at higher elevations. The heating of the earth itself also plays a role.
What happens to temperature as altitude increases?
Temperature varies with altitude, as follows: In the troposphere, temperature decreases as altitude increases. In the stratosphere, temperature generally increases as altitude increases due to the increasing absorption of ultraviolet radiation by the ozone layer.
What happens to air pressure and temperature as altitude increases?
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands), and the temperature decreases.
What happens to the density of air as altitude decreases?
Altitude and Density The density of air decreases with height. There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases (Figure below).
What is atmospheric pressure and why does it decrease with altitude quizlet?
Air pressure is strongest near the surface because more air molecules are above you (and pushing on you). As you move higher there is less air molecules pushing on you and therefore as you go up the air pressure decreases.
What happened to air pressure when the temperature gets higher?
When gas molecules are heated, the molecules move more quickly, and the increased velocity causes more collisions. As a result, more force is exerted on each molecule and air pressure increases.
What happens to air pressure as you increase the altitude quizlet?
As altitude increases, air pressure will decrease As altitude increases the gas molecules that make up the air spread further apart. Smaller number of particles pushing down on a given area means lower air pressure.
Why does air pressure always decrease with increasing height above the surface quizlet?
Why do air pressure and density always decrease with increasing height above the surface? As we climb in elevation, fewer air molecules are above us; hence, air pressure and density decrease with increasing height.
Why does atmospheric pressure decrease as you go higher in altitude on Earth quizlet?
Air pressure is strongest near the surface because more air molecules are above you (and pushing on you). As you move higher there is less air molecules pushing on you and therefore as you go up the air pressure decreases.
Which statement best describes air pressure at high altitudes quizlet?
Which statement best describes air pressure at high altitudes? Air pressure decreases as altitude increases.
Which statement explains the molecular changes that occur in an enclosed gas as the pressure increases and the temperature is held constant?
Which statement explains the molecular changes that occur in an enclosed gas as the pressure increases and the temperature is held constant? An increase in pressure causes particles to move closer together, decreasing the volume. The ideal gas law is represented by PV=nRT.
What happens to the temperature of air when altitude increases?
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases. If the humidity is at 100 percent (because it's snowing), the temperature decreases more slowly with height.
When altitude increases what happens to pressure and temperature?
As you increase in elevation, there is less air above you thus the pressure decreases. As the pressure decreases, air molecules spread out further (i.e. air expands) and the temperature decreases. If the humidity is at 100 percent (because it's snowing), the temperature decreases more slowly with height.
What increases with altitude?
The atmospheric pressure varies with altitude as the density of air decreases as we rise up and the air becomes rarer. Atmospheric pressure decreases with increases in altitude.
Why does temperature decrease at higher altitudes?
As you go to higher altitudes, there are less air molecules pushing down on you (lower pressure). When the pressure of a gas decreases, the temperature also decreases (the reverse is also true – when the gas pressure increases, the temperature increases). Therefore, the air temperature is lower at higher altitudes.