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The air molecules have mass. When a lot of molecues are piled up,one on top the other, the pressure increases because of that.So air pressure increases at lower altitudes.

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Where is air density is greatest?

At the bottom of the troposphere


Does air pressure decrease with increasing altitudes?

No, air pressure decreases with increasing elevation. This is because air pressure is due to the weight of the column of air above where you are. The higher you go, the less air there is above you, so the less the weight of that column of air and the lower the air pressure.


Why does density of air decrease with increase in height?

The density of air decreases with an increase in height due to the decrease in pressure and temperature with altitude. As you go higher in the atmosphere, there are fewer air molecules present, leading to lower air density.


Is pressure greater or lesser at higher altitudes?

The air pressure at low altitudes is greatest due to the force of Earth's gravitational pull on the atmospheric gases. The air closest to the center of the Earth is pulled more by gravity and is thus more compact than that in the higher altitudes. This compressed air is more pressurized since the gas molecules are closer together and undergo a myriad of collisions with one another. At higher altitudes, water boils at a lower temperature than at sea level. This is because the air pressure is much lower and can be more easily overcome by the water molecules. Vapor pressure, or the pressure at which water evaporates, is lower and this means that the temperature at which the water becomes water vapor is lower as well. While most of the first answer is correct, the relative distances from the center of Earth vary too little to be consequential. Just as in water, air at lower altitudes is compressed more simply due to the weight of all the air that's on top of it.


What causes differences in air temperatures at different altitudes?

Differences in air temperatures at different altitudes are primarily caused by the way the atmosphere absorbs and retains heat from the sun. As you increase in altitude, the air pressure decreases, causing the air to expand and cool. This results in lower temperatures at higher altitudes compared to lower altitudes.

Related Questions

Is air pressure higher at higher altitudes?

Yes, air pressure is lower at higher altitudes.


Is air pressure greater at high altitudes or low altitudes?

It is greater at a lower altitude.


Which altitudes would have the lowest air pressure and why?

The highest altitudes have the lowest air pressure. Air pressure increases as altitude decreases. Above sea level is lower pressure; below sea level is higher pressure.


Why are higher altitudes colder than lower altitudes?

Higher altitudes are colder than lower altitudes because the air pressure decreases as you go higher up, causing the air molecules to spread out and the temperature to drop.


Why do recipes change at higher altitudes?

The air pressure gets lower!


Is pressure uniform throughout the atmosphere?

No, pressure is not uniform throughout the atmosphere. Pressure decreases with increasing altitude due to the weight of the air above pushing down on the air below. This results in higher pressure at lower altitudes and lower pressure at higher altitudes.


Where is air density is greatest?

At the bottom of the troposphere


Why does water boil at a lower temperature as altitude increases?

Air pressure affects the boiling point. Lower air pressure is present at higher altitudes.


Why is it possible to boil normal water at higher altitudes?

There is lower air pressure.


One reason air pressure increases at lower altitudes is because?

air (gas) has mass therefore it is affected by gravity. the "deeper" the air the higher the pressure. just like the oceans....


Why the pressure of oxygen becomes low at high altitudes?

At higher altitudes, the air pressure decreases because the air molecules are more spread out. This reduction in pressure means there are fewer oxygen molecules available in the air to be breathed in, leading to lower oxygen levels at high altitudes.


Why is it cold at high altitudes?

At high altitudes, the air is thinner and there is less pressure. This causes the air to expand and cool down, leading to lower temperatures.