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When the helium balloon starts gaining height, the pressure decreases and as the gas molecules are very freely movable (higher than the normal). They move apart from each other in the mean while they make the balloon to expand.

The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.

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Reed Keeling

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3y ago

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Why does a partially inflated weather balloon expand as it rises?

As the weather balloon rises in altitude, the air pressure around it decreases while the pressure inside the balloon remains relatively constant. This pressure difference causes the gas inside the balloon to expand, increasing its volume and size.


How does a weather glass work to predict changes in atmospheric conditions?

A weather glass, also known as a storm glass, works by responding to changes in atmospheric pressure and temperature. When the pressure and temperature change, the liquid inside the glass expands or contracts, causing the crystals inside to form different patterns. These patterns can indicate upcoming weather changes, such as storms or clear skies.


'hydrogen is used in weather balloons Explain what happens to the volume of gas in the if the air temperature falls?

What you should first understand is thermodynamics ... in the most simplistic terms ... Pressure * Volume / Temperature is constant so if the gas cools ... then Pressure1 * Volume1 / High Temperature is smaller than Pressure2 * Volume2 / Low Temperature Let's firstly assume* that the pressure will be constant so Volume1/big number Volume2/smaller number => Volume 1 > Volume 2 ...hence the volume of gas when the temperature drops should be smaller. *(though in reality pressure drops as you go higher in the atmosphere) ** To be realistic, the pressure outside the balloon will be smaller than the pressure when the balloon was at ground level, causing it to expand... to find out with a certain degree of certainty (the elasticity of the balloon is not really constant) how much "bigger" it will be, you need to also know the exterior pressure. I would recommend learning more about thermodynamics as the law slightly differs with the type of transformation that occurs (adiabatic, isotropic etc ) Later Edit *** oh and I think its actually helium ... if you were referring to the fact that the gas should turn liquid because of the low temperatures then no ... helium and hydrogen boils at a very low temperature (below -200 Celsius). / btw sorry for any grammar mistakes, English is my second language.


How does a hot air baloon work?

Simply put, the weather balloon is a lighter-than-air vehicle or aerosonde that provides lift to an instrument package to get it to altitude. The instruments thus situated can collect data which, when combined with other information from both similar and different sources, can be used to assess current conditions, and, as an extension, to forecast weather.


When atmospheric pressure on a pond remains constant during hot weather what happens to the force of air on the surface of the pond?

When atmospheric pressure on a pond remains constant during hot weather, the force of air on the surface of the pond also remains constant. Atmospheric pressure is not affected by temperature changes alone, so the force exerted by the air on the pond's surface stays the same.

Related Questions

Why do a weather balloon keep increasing in volume as it rises?

As a weather balloon rises in the atmosphere, the external air pressure decreases. This reduction in pressure allows the gas inside the balloon to expand, causing the balloon's volume to increase. Additionally, the temperature can drop at higher altitudes, but the primary driver of volume increase is the decrease in external pressure. Eventually, if the balloon expands too much, it can burst.


What is a weather balloon job?

A weather balloon gathers information on temperature, atmospheric pressure, humidity, and wind speed.


Explain why a helium weather balloon expands as it rises in the air Assume that the temperature remains constant?

When the helium balloon starts gaining height, the pressure decreases and as the gas molecules are very freely movable (higher than the normal). They move apart from each other in the mean while they make the balloon to expand. The decrease in atmospheric pressure relative to pressure inside the balloon causes it to expand.


How does rainfall weather a rock?

because of the constant water hitting it until it expands then burst.


How does rainfall weather rocks?

because of the constant water hitting it until it expands then burst.


What will change the size of the weather balloon as it rises?

The pressure of the air inside it. The higher the balloon rises, the lower the outside air-pressure. With less pressure outside, the balloon expands because of the pressure of the air inside it. Eventually, the balloon bursts, and scientists recover the instruments when they fall to earth.


Does a Weather balloon change size?

Yes, a weather balloon expands as it rises through the atmosphere due to the decreasing air pressure. Once it reaches a certain altitude, the balloon will have expanded as much as it can and eventually burst.


What woul happen to the volume of the 100L weather balloon if its temperature increases from 25 C TO 125 C while the external pressure remain constant?

The volume of the weather balloon would increase. This is because as the temperature of a gas increases, the molecules move faster and spread out more, leading to an increase in volume according to Charles's Law.


Does helium contract in cold weather and cause a helium balloon to sink and if warmed will it rise again?

Helium will contract in cold weather, but that may not cause a balloon filled with it to sink since the air will also contract - and by about the same amount - so the relative densities of the helium and the surrounding are would remain about the same and the buoyancy of a helium filled balloon would remain


What weather instrument Carries weather instruments aloft to about 30000's meters?

A weather balloon carries weather instruments, such as a radiosonde, aloft to about 30,000 meters. As the balloon ascends, the instruments collect data on temperature, humidity, and pressure, transmitting the information back to the ground for weather forecasting and research.


A balloon carrying weather instruments is released at Earth?

Temperature, Pressure, and humidity.


What unit does a weather balloon measures?

A weather balloon is sent up to gather information on atmospheric pressure, temperature, humidity and wind speed by means of a small, expendable measuring unit called a radiosonde.