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Clouds

A cloud is a visible body of very fine water droplets or ice particles suspended in the atmosphere at altitudes up to several miles above sea level. They are generally produced by the condensation of water vapor. Other clouds, less commonly seen, are composed of smokes or dusts.

10,186 Questions

Why air coolers will not provide effective cooling in humid areas?

Air coolers work by evaporating water into the air. Because air can only hold a certain amount of moisture, the more moisture in the air to begin with, the less you can add.

The technical answer is to use a psychrometric chart to analyze the problem.

A common thermometer measures dry bulb temperatures (the x-axis on the chart). From that temperature follow a vertical line up until you reach the current relative humidity value. This intersection gives the properties for the air you're trying to cool. From this point, a horizontal line all the way to the left side of the graph will give you the temperature for 100% relative humidity level. This value is the theoretical minimum temperature you can reach through evaporative cooling.

Seeing this with numbers shows that a common value for someplace humid, like Florida today is, 80 deg F and around 80% humidity. If you follow these values on the chart, the minimum temperature you can achieve is around 74 deg F @ 100% humidity.

The same problem with cooling someplace dry, like Arizona, where the temperature is warmer, 100 deg F, but the humidity is lower, 15%, can get a minimum temperature of 44 deg F @ 100% humidity.

This level of humidity is uncomfortable, and most people shoot for around 50%. If you live someplace dry use evaporative cooling (adding moisture to cool a space) and if you live someplace humid, use air conditioning (cooling & removing moisture to condition a space).

Name a unit of pressure?

Since pressure is defined as force acting perpendicularly on a surface, P := d(F n)/ds (where n is the versor perpendicular to the element of surface ds), its unit is N/m2, also known as pascal: 1 Pa = 1 N / 1 m2
N/m^2 (N:Newton (unit of Force) that named Pascal is unit of pressure.

1Pa means that 1N load(force) as normally affect on 1 m^2 area.

other unit is bar , mmHg. atmosphere,......

How does the surface of an object affect its temperature?

The surface of an object affects its temperature by influencing how much heat energy it can absorb or reflect. Dark, rough surfaces tend to absorb more heat from the environment because they have a higher surface area to absorb heat. Light, smooth surfaces tend to reflect more heat, keeping the object cooler.

Water droplets in the clouds become cool dense and heavy and can no longer remain in the air?

The cool, dense, and heavy water droplets in the cloud eventually combine to form larger droplets or ice crystals. When these droplets or crystals become too heavy to be supported by the air currents in the cloud, they fall to the ground as precipitation, such as rain or snow.

Where is the cloudiest place in North America?

The cloudiest place in the United States is Juneau, Alaska and other locations along the southern coast of the state. Outside of Alaska, the state of Washington has several of the cloudiest places in the country.

What is the difference between condensation nuclei and freezing nuclei?

Condensation Nuclei's a microscopic particle of material such as salt and smoke around which a water droplet can begin to form; a freezing nucleus is a microscopic particle of clay, dust or smoke around which an ice crystal may form in a cloud.

During which process does water gain the most heat energy?

Water gains the most heat energy during the process of vaporization, when it changes from liquid to gas. This requires a large amount of energy to overcome the intermolecular forces holding the water molecules together.

Is vinegar a liquid or gas?

Vinegar is an Acidliquid processed from the Fermentation_(food) of Ethanolin a process that yields its key ingredient, Acetic_acid(ethanoic acid).

Acetic Acid formula: HC2H3O2

More on vinegar: http://en.wikipedia.org/wiki/Vinegar

What is the chemical composition of the thermosphere?

The thermosphere is composed mostly of oxygen, nitrogen, and smaller amounts of other gases such as helium and hydrogen. It can also contain ions and free electrons due to high-energy solar radiation impacting this region of the atmosphere.

What is a cloud anvil look like at the top?

An anvil head cloud is called a cumulonimbus or a very well developed anvil shape is a cumulonimbus incus. These clouds are usually associated with severe thunderstorms and possibly tornadoes.

Water changes a liquid to a gas is called?

Solid>Liquid = Melting
Liquid>Solid = Freezing
Liquid>Gas = Evaporation
Gas>Liquid = Condensation
Solid>Gas = Sublimation
That's all I know. After all, I'm only 13.
Anyway, you are looking for evaporation.

What happens to your mass when the elevator goes down?

Your mass remains the same when the elevator goes down. However, you may feel heavier due to the acceleration experienced as the elevator descends, which creates an upward force against gravity that can make you feel heavier.

Why is dust particles countable?

Dust particles are countable because they are discrete entities that can be physically separated and individually distinguished from one another. When discussing the number of dust particles, each individual speck or particle can be identified and quantified, making them countable.

What state of matter does water vapor become when it is cooled?

Water vapor becomes liquid water when it is cooled. This process is known as condensation, where the vapor loses heat and transforms from a gaseous state to a liquid state.

What is the measure of the actual amount of water vapor in the air called?

This is called the absolute humidity, usually expressed in grams of water vapor per kilogram of air, but also by water vapor per unit volume of air (e.g. grams per cubic meter).

Why does ice form on the leading edges of an airplanes' wings when it flies through clouds at high altitudes?

the air is extremely cold and the plane is going really fast. just like if you run when your face is wet and then your face gets cold. or when you stick your head out your car window while riding in a car, your face will get cold. hope this help.:)

Are ash clouds emitted from sills?

No, ash clouds are typically emitted from volcanic eruptions rather than sills. Sills are horizontal intrusions of magma that solidify underground and do not typically result in the release of ash clouds.

What are the similarities between water droplets and mist?

Both water droplets and mist are liquid water suspended in the air. They are formed through condensation of water vapor in the air. Both can contribute to humidity in the atmosphere and are important sources of water for plants and ecosystems.

What type of weather do cirrocumulus clouds bring?

Cirrocumulus clouds typically indicate fair weather, but they can also signal approaching storms or cold fronts. They are composed of ice crystals and are often seen at high altitudes, appearing as small, white patches or ripples in the sky.

Is water vapor is a liquid?

Because of the strong hydrogen bonds that exists in water it's non volatile.The hydrogen bond perform between hydrogen atoms and oxygen atoms.

When cliffs are pounded by wind and water what takes place?

Erosion occurs, causing the cliffs to wear down over time. This process can cause the cliffs to become more unstable and eventually lead to landslides or rockfalls. Over time, the cliffs can change shape or even collapse.

Is fluffy and fat an alliteration?

Yes, "fluffy and fat" is an example of alliteration because both words start with the same consonant sound "f."

What process could be compared to how rushing stream turns a water wheel?

The process of a rushing stream turning a water wheel could be compared to how wind turns a wind turbine. In both cases, the natural energy from the flowing water or wind is harnessed to generate power. The spinning motion of the water wheel or wind turbine is transferred to a generator, which converts the kinetic energy into electricity.