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Can humans breath at 20000 feet?
Not very well. The air is simply too thin- not enough oxygen. Mountain climbers at that elevation will need supplemental oxygen in order to breath. I get winded at 14,000 feet. Of course, if you are in an aircraft that has a pressurized cabin, you are being supplied with additional air.
What is surface temperature?
Surface temperature is the temperature on the outside of the object. For example the surface temperature of the Earth is the Ground temperature and the surface temperature of an orange is the rind not the pips.
Why can an aneroid barometer measure elevation as well as air pressure?
The aneroid measures elevation and air pressure has an airtight chamber that is sensetive to changes in the air pressures. Hope this helps.
How much air fills a hot air balloon?
In theory, the larger the envelope on a hot air balloon (or the warmer the air inside compared to the ambient temperature outside), the more lifting force the balloon has. To answer your question, there is no single answer. Hot air balloons range in size from 70,000 cubic feet to over 200,000 cubic feet. (The "cubic feet" measurement refers to the volume of air inside the balloon envelope). Special shaped balloons can be enormous. The Energizer Bunny balloon is 15 feet taller than the Statue of Liberty. The ears alone are sixty feet...which is the height of an entire average-sized hot air balloon.
What is the adiabatic cooling rate of dry air and how does this affect the formation of clouds and the elevation of snowfall in the mountains?
Adiabatic processes are those in which there is no net heat transfer between a system and its surrounding environment (e.g., the product of pressure and volume remains constant). Because it is a gas, air undergoes adiabatic heating and cooling as it experiences atmospheric pressure changes associated with changing altitudes. Increasing pressure adiabatically heats air masses, falling pressures allow air to expand and cool.Adiabatic heating and cooling is common in convective atmospheric currents. In adiabatic heating and cooling there is no net transfer of mass or thermal exchange between the system (e.g., volume of air) the external or surrounding environment. Accordingly, the change in temperature of the air mass is due to internal changes.In adiabatic cooling, when a mass of air risess it does when it moves upslope against a mountain ranget encounters decreasing atmospheric pressure with increasing elevation. The air mass expands until it reaches pressure equilibrium with the external environment. The expansion results in a cooling of the air mass.With adiabatic heating, as a mass of air descends in the atmospheres it does when it moves downslope from a mountain rangehe air encounters increasing atmospheric pressure. Compression of the air mass is accompanied by an increase in temperature.Because warmer air is less dense than cooler air, warmer air rises. Counter-intuitively, moist air is also lighter than less humid air. The water, composed of the elements of oxygen and hydrogen is lighter than dominant atmospheric elements of oxygen and nitrogen. For this reason, warm moist air rises and contributes to atmospheric instability.In the lower regions of the atmosphere (up to altitudes of approximately 40,000 feet [12,192 m]), temperature decreases with altitude at the atmospheric lapse rate. Because the atmosphere is warmed by conduction from Earth's surface, this lapse or reduction in temperature normal with increasing distance from the conductive source. The measurable lapse rate is affected by the relative humidity of an air mass. Unsaturated or dry air changes temperature at an average rate 5.5°F (3.05°C) per 1,000 feet (304 m). Saturated airefined as air at 100% relative humidityhanges temperature by an average of 3°F (1.66°C) per 1,000 feet (304 m). These average lapse rates can be used to calculate the temperature changes in air undergoing adiabatic expansion and compression.For example, as an air mass at 80% relative humidity (dry air) at 65°F (18.3°C) rises up the side of a mountain chain from sea level it will decrease in temperature at rate of 5.5°F (3.05°C) per 1,000 feet (304 m) until the changing temperature changes the relative humidity (a measure of the moisture capacity of air) to 100%. In addition to cloud formation and precipitation, the continued ascension of this now "wet" or saturated air mass proceeds at 3°F (1.66°C) per 1,000 feet (304 m). If the saturation point (the point at which "dry" air becomes "wet" air) is at 4,000 feet (1,219 m), the hypothetical air mass starting at 65°F (18.3°C) would cool 22°F (12.2°C) to 43°F (6.1°C) at an altitude of 4,000 feet (1,219 m). If the air ascended another 6,000 feet (1,829 m) to the top of the mountain chain before starting downslope, the temperature at the highest elevation of 10,000 feet (3,048 m) would measure 25°F (.9°C). This accounts for precipitation in the form of snow near mountain peaks even when valley temperatures are well above freezing. Because the absolute moisture content of the air mass has been reduced by cloud formation and precipitation, as the air moves downslope and warms it quickly falls below saturation and therefore heats at the dry lapse rate of 5.5°F (3.05°C) per 1,000 feet (304 m). A dry air mass descending 10,000 feet (3,048 m) would increase in temperature by 55°F (30.6°C). In the example given, the hypothetical air mass starting upslope at 65°F (18.3°C), rising 10,000 feet (3,048 m) and then descending 10,000 feet (3,048m) would measure 80°F (26.7°C) at sea level on the other side of the mountain chain.Although actual lapse rates do not strictly follow these guidelines, they present a model sufficiently accurate to predict temperate changes. The differential wet/dry lapse rates can result in the formation of hot downslope winds (e.g., Chinook winds, Santa Anna winds, etc).See also Air masses and fronts; Land and sea breeze; Seasonal windsSource: World of Earth Science, ©2003 Gale Cengage. All Rights Reserved. Full copyright.
How does elevation effect temperature?
Air temperature drops an average of 6.5 degrees Celsius per every 1000 feet.
How many feet does 15000 btu air conditioner cool?
900
What would you use to measure the elevation above sea level on air temperature and air pressure?
elevation above sea level . . . barometer or GPS air temperature . . . thermometer air pressure . . . barometer
Which of these have an effect on air pressure?
temperature humidity and elevation
Name three things that effect air pressure?
temperature, water vapor, and elevation.
What is affected by surface elevation water vapor and temperature?
air pressure
What is the affected by surface elevation water vapor and temperature?
air pressure
Is elevation is a factor that affect air pressure?
temperature and humidity
What country has lighter air than Florida?
Air gets less dense or lighter as you go up in elevation. So, any area with an elevation higher than 100 feet ( the average elevation of Florida) will have lighter air.
What types of air pressure systems are there?
Three types of air pressure are temperature water vapor elevation
How does the air's capacity to hold water change as elevation increase?
As elevation increases, temperature decreases approximately at the rate of 12.5 degrees c every 1km upwards. As air temperature decreases, its capacity to hold water is less. Therfore as elevation increases, its water capacity will decrease.
Elevation of tropical rainforest?
As you go up in the troposphere, air particles become colder and less dense. The temperature decreases 3-4 degrees Fahrenheit every 1000 feet.
