The benefits and disadvantages of water evaporation to the natural environment and the effects on hu

Without the evaporation of water, there is no rain! There are no rivers to speak of! The world's water is a stagnant water, and fresh water will not exist!

The water of that world will exist only in the lakes and seas! Plants on Earth will not survive either! Of course, for now, water not evaporating will not allow pollution to spread all over the world!

The evaporation of water is an important way of the water cycle, the water evaporates from the river, rises into the air to form clouds, accumulates to a certain extent, and falls to form rain, which is good for the farmer's farmland. The evaporation of water, which increases the humidity of the air, is good for a person's breathing, as breathing dry gases also dries out the oral airways. So the evaporation of water has many benefits.

As for the disadvantages, it can only be said that the water storage of the river is reduced, and there is almost no harm other than that. The power of nature is enormous, and everything has good and bad things, it's just a matter of how much.

Evaporation plays a very important role in the circulation of the Earth's hydrosphere. In the simplest words, it is to provide power.

Under the action of gravity, water flows from the mountains into the plains, and from the plains into the oceans, that is, "water flows down". Evaporation is the act of defying gravity, turning the water of the ocean (the ocean occupies more than 70% of the earth's surface area, and the evaporation is mainly the water of the sea and the ocean) into water vapor, which is carried to the land and mountains under the action of the wind. When the hot and cold air meet, there is snow and rain in the digging state, and water vapor falls on the mountains and plains in the form of snow and rain.

So, without evaporation, there is no circulation of the hydrosphere; Evaporation is an important driving force for the hydrosphere cycle.

Water evaporation will produce a water cycle, and the water evaporates into clouds, and when the clouds rain, they will water nature and solve part of the drinking water problem. Water evaporation also absorbs heat, so it will cool you when you sprinkle water in the house when it is very hot in the summer.

Factors that affect the speed of evaporation: temperature, humidity, surface area of the liquid, air flow on the surface of the liquid, etc. The amount of evaporation is usually expressed in millimeters of the thickness of the water layer that has been evaporated.

In addition to denoting a physical phenomenon, "evaporation" is also called "evaporation" by its original meaning through association.

Categories: Science & Engineering.

Problem description: Isn't the boiling point of water 100 degrees? So why does the stagnant water on the ground evaporate? It shouldn't have reached 100 degrees.

Analysis: When you say that the water on the ground evaporates, that is not boiling.

Evaporation can be achieved under certain external conditions, and it does not have to hit 100 degrees.

Boiling: It is the temperature of the water that reaches its own boiling point, and the thermal movement of the water itself intensifies. The heat energy of the water molecules on the surface is greater than the molecular force between the water molecules, and the escape cavity becomes the evaporated water vapor.

Evaporation: also known as volatilization, refers to the action of external forces when water does not reach its own boiling point, such as: the air flow on the surface of water makes water molecules escape and escape. So even if the boiling point is not reached, it can be evaporated.

1. The evaporation rate of water is related to temperature and humidity. The higher the temperature, the faster the evaporation rate; The lower the humidity, the faster the evaporation rate. Therefore, the main factors that affect the evaporation rate of water are temperature and humidity.

2. The following is a comparison table of the evaporation rate of water:

Temperature (degrees Celsius): 20 25 30 35 40

Humidity (%)60 7 13

Humidity (%) 50 3 7 15 26

Humidity (%) 40 5 10 20 35

Humidity (%): 30, 7, 14, 30, 50

That is, as the temperature and humidity change, the rate of evaporation of water will also vary. The higher the temperature and humidity, the slower the evaporation rate; The lower the temperature and humidity, the faster the evaporation rate.

3. At different altitudes, the evaporation rate of water will also be different. At lower altitudes, water will evaporate faster, while at higher altitudes, water will evaporate more slowly. In addition, atmospheric winds promote the rate of water evaporation, which is slower when there is no wind.

4. In more complex meteorological conditions, such as rainfall and storms, the evaporation rate of water will become faster, which is mainly caused by the cooling and a large amount of water vapor brought by precipitation, as well as the acceleration of water evaporation by wind strength.

Summary. The benefits of water evaporation in life, steamed buns, hair dryers, dry cleaning machines, air purifiers, air conditioners.

Drawbacks, the pros and cons of water evaporation in life.

The benefits of water evaporation in life, steamed steamed buns, hair dryers, dry cleaning machines, air purifiers, air conditioning disadvantages, rubbing alcohol on the body (or wet towel on the body) when you are sick and feverish, alcohol (or water) evaporates to absorb heat and cool down the body (2) In summer, after the heavy rain makes the clothes wet, because the water needs to absorb heat in the process of steaming silver, it will make people catch a cold Therefore, the answer is: (1) In summer, sprinkle water on the ground, and the water needs to absorb heat during the evaporation process, so the temperature around the ant will decrease; (2) In summer, after the clothes are wet due to heavy rain, the water needs to absorb heat during the evaporation process, which will make people cold

Clouds & Weather, Universal Steam Engine.

1. The heat dissipation of notebooks is generally dissipated by fans. Do not use a water bag to dissipate heat. As said on the first floor, it is easy to block the heat dissipation holes, 2. Put the water in a plastic bag, and the sealed water will not evaporate in the plastic bag. The temperature will continue to rise, and if the heat dissipation of the plastic bag is not good, the temperature may rise to nearly 60 degrees. In the end, it can't play a role in cooling the laptop.

How can water evaporation be minimized? The conditions that you seal in a plastic bag are no longer evaporated.

Your question asks like this: How can we maximize the evaporation of water? That's a meaningful question.

The evaporation of water can reduce the temperature of the water, so that the laptop can be dissipated with a water bag. If this is the case, we should not put the water in a plastic bag, but use a container without a lid with a large area of direct contact with the air on the outside to increase the evaporation of the water.

If you must use water to dissipate heat from the laptop, you can also learn the heat dissipation method of the car motive --- use circulating water to dissipate heat.

I gave you so many ideas, I don't know if it inspired you. If it's a little inspiring, please adopt it in time. If you have any questions about this question, please ask. Other questions will be asked separately. Have a nice day.

The process by which water transitions from a liquid or solid state to a vapor state and escapes into the atmosphere is called evaporation. Evaporation refers to the evaporation of water in a certain period of time.

The amount of cloth into the air. The amount of water evaporated from the water surface or soil is usually expressed in millimeters of the thickness of the water layer that has evaporated, and is measured with different evaporators. Generally, the higher the temperature, the lower the humidity, the greater the wind speed, and the lower the air pressure, the greater the evaporation; Conversely, the evaporation will be smaller.

The determination of soil evaporation and water surface evaporation is very important in agricultural production and hydrological work. Areas with scarce rainfall, low underground water sources and inflow of runoff water, such as high evaporation, are prone to drought. And it can evaporate at any temperature.

Microscopically, evaporation is the process by which liquid molecules leave the liquid surface. Since the molecules in the liquid are constantly moving irregularly, the magnitude of their average kinetic energy is adapted to the temperature of the liquid itself. Due to the irregular motion of molecules and their collisions with each other, there are always some molecules at any moment that have a kinetic energy greater than the average kinetic energy.

If these molecules with sufficient kinetic energy are near the liquid surface, and their kinetic energy is greater than the work required to overcome the gravitational pull between the molecules in the liquid when they fly out, these molecules can fly out of the liquid surface and become the vapor of the liquid, which is the phenomenon of evaporation. Molecules that fly out may collide with other molecules and return to the surface or enter the interior of the liquid. If more molecules fly out than fly back, the liquid is evaporating.

During evaporation, molecules with greater than the average kinetic energy fly out of the liquid surface, while the molecules that remain inside the liquid have less average kinetic energy. Therefore, during the evaporation process, if the outside world does not replenish the liquid with energy, the temperature of the liquid will drop.

It is not recommended to put the bag with water under the heat dissipation hole, first of all, such a water bag has limited heat absorption, and placing it at the heat dissipation hole hinders the ventilation of the fan, and the temperature does not drop but rises. It is recommended to lower the room temperature or, blow the laptop high with a fan from the side to strengthen air circulation, and then put a basin of water in front of the fan The effect is much stronger than if you put a water bag.

1 clinker bag should be strong enough 2 water can not be too much, as much as possible in the stressed area, the bag is flat 3 I suggest you make four empty mineral water bottles, fill with cold water, the practicality will be better, there is no harm to the notebook, and the water is easy to replace when it is hot. I've been using this method, can I adopt a handsome guy?