Which is true about the air at a high altitude vs the air at a lower altitude?

Which is true about the air at a high altitude vs the air at a lower altitude?

Air pressure is higher at lower altitudes. 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.

What happens to the temperature of air at high altitudes?

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.

How does the body respond to high altitude?

At high altitude, in the short term, the lack of oxygen is sensed by the peripheral chemoreceptors, which causes an increase in ventilation. An increase in heart rate and decrease in stroke volume also occurs. Full adaptation to high altitude is achieved when the increase of red blood cells reaches a plateau and stops.

Does altitude cause gas?

Perhaps the lower concentration of oxygen at altitude affects the bowels’ ability to move digested food, Dr. Auerbach theorized, giving it more time to create gas.

Is high altitude bad for your heart?

Acute exposure to high altitude can affect the cardiovascular system by decreasing oxygen in the blood (acute hypoxia). It also increases demand on the heart, adrenaline release and pulmonary artery pressures.

Why do I feel better at higher altitudes?

Altitude can also increase your metabolism while suppressing your appetite, meaning you’ll have to eat more than you feel like to maintain a neutral energy balance. When people are exposed to altitude for several days or weeks, their bodies begin to adjust (called “acclimation”) to the low-oxygen environment.

Is air thinner at higher altitudes?

Altitude is related to air pressure. 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 true airspeed increase with altitude and temperature?

Let’s look at what happens when the aircraft climbs. As the altitude increases, the air becomes less dense, in other words the air molecules become less tightly packed, due to the decrease in pressure which is holding them all together. The pitot tube drives the airspeed indicator and is subject to both the pressure, and air being pushed into it.

Why is the air thinner at higher altitudes?

Eventually as you get closer to the sun, the temperature will start to increase. You may have heard people say that the air is “thinner” at higher altitudes. What this means is that it is less dense.

Why is the air cooler at higher elevations?

Air at higher elevations is cooler because the pressure is lower. Gases expand at lower pressures. As a gas expands, the molecules (and atoms) within it move more slowly. Since air temperature is just a measure of how fast the molecules in air are moving, the rate of motion of molecules and the temperature are both lower at higher elevations.

Why is the air colder on the top of a mountain?

When the air is high on the mountain, it spreads out. This is like your big square. The same amount of heat is now in a bigger space, so it is more spread out. So the air is colder on top of mountains because there is less air pressure.

https://www.youtube.com/watch?v=_bsnSxHo8AY