What are the characteristics of thunderstorms?

What are the characteristics of thunderstorms?

Characteristics of thunderstorm in summer: heavy rainfall intensity, accompanied by lightning phenomenon, belonging to strong convective weather.

Cause of thunderstorm

In summer, direct sunlight makes the water on the ground evaporate faster than in winter, spring and autumn. The air close to the ground can receive more water vapor because of its high temperature, which leads to the decrease of air density, the lightening of air and the rising of the lightened air. With the increase of altitude, the temperature will gradually drop (0.6 degrees per 100 meters), and the air will gradually cool down. When the air is cool, it can't hold the original abundant water vapor. Some water vapor will condense into small water droplets, and the sky will be cloudy. So, why don't these little drops fall down quickly and turn into rain? This is because the water droplets are too small, and the rising hot air lifts them up and pushes the suspended water droplets higher and higher. Clouds are getting bigger and higher. This kind of cloud is called cumulonimbus cloud in meteorology, and its bottom is about 1000 meters above the ground.

When the small water droplets in the cumulonimbus cloud constantly collide and merge into larger water droplets, they begin to fall, while the hot air rising from the ground keeps rushing upwards, and the friction between them is charged. The rising airflow is positively charged and the falling water droplets are negatively charged. With the passage of time, a large number of positive charges have accumulated at the top of cumulonimbus clouds, while many negative charges have accumulated at the bottom. Due to the negative charge at the bottom of cumulonimbus clouds, the ground is also positively charged.

The water droplets in the cloud merge and increase until the rising hot air can't hold it, and then fall straight from the cloud. The hot air at the lower level was drenched by rain and suddenly became cold. Instead of rushing up, it turned to the ground. At this point, the charge in the air began to discharge, accompanied by thunderous thunder. Because lightning travels at a speed of 300,000 km/s and thunder travels at a speed of 33 1 m/s, people first see lightning and then hear thunder. Sometimes the thunder drags on for a long time, which is caused by the thunder reflected back and forth from clouds, peaks and ground.

What are the characteristics of the weather before thunderstorm?

I'll answer!

Characteristics of Thunderstorms in Summer

Characteristics of thunderstorm in summer: heavy rainfall intensity, accompanied by lightning phenomenon, belonging to strong convective weather.

Cause of thunderstorm

In summer, direct sunlight makes the water on the ground evaporate faster than in winter, spring and autumn. The air close to the ground can receive more water vapor because of its high temperature, which leads to the decrease of air density, the lightening of air and the rising of the lightened air. With the increase of altitude, the temperature will gradually drop (0.6 degrees per 100 meters), and the air will gradually cool down. When the air is cool, it can't hold the original abundant water vapor. Some water vapor will condense into small water droplets, and the sky will be cloudy. So, why don't these little drops fall down quickly and turn into rain? This is because the water droplets are too small, and the rising hot air lifts them up and pushes the suspended water droplets higher and higher. Clouds are getting bigger and higher. This kind of cloud is called cumulonimbus cloud in meteorology, and its bottom is about 1000 meters above the ground.

When the small water droplets in the cumulonimbus cloud constantly collide and merge into larger water droplets, they begin to fall, while the hot air rising from the ground keeps rushing upwards, and the friction between them is charged. The rising airflow is positively charged and the falling water droplets are negatively charged. With the passage of time, a large number of positive charges have accumulated at the top of cumulonimbus clouds, while many negative charges have accumulated at the bottom. Due to the negative charge at the bottom of cumulonimbus clouds, the ground is also positively charged.

The water droplets in the cloud merge and increase until the rising hot air can't hold it, and then fall straight from the cloud. The hot air at the lower level was drenched by rain and suddenly became cold. Instead of rushing up, it turned to the ground. At this point, the charge in the air began to discharge, accompanied by thunderous thunder. Because lightning travels at a speed of 300,000 km/s and thunder travels at a speed of 33 1 m/s, people first see lightning and then hear thunder. Sometimes the thunder drags on for a long time, which is caused by the thunder reflected back and forth from clouds, peaks and ground.

What are the characteristics of thunderstorms?

Are you talking about Cao Yu's play Thunderstorm or Natural Thunderstorm?

Drama:

First, the plot is tortuous, strong in story and legendary. The tragedy of two families and two absurd stories told in the play are all related to Zhou Mansion. The past 30 years ago and the reality 30 years later are all related. The complicated conflicts and personnel disputes between Zhou and Lu overlap and reflect each other, which makes the script full of drama and legend, suspense and gripping.

Second, the structure is closely concentrated. The drama begins with the crisis of events, explains the complicated antecedents in the sudden outbreak of consequences, skillfully interweaves current events with the past, and promotes the drama with the past. Within 24 hours from morning till night, all contradictions and conflicts are concentrated in the living room of Zhou Mansion and home. The main line of the conflict between Zhou Puyuan and Fan Yi in the whole play is very prominent, and other clues involved involve all eight people in the whole play in the tense conflict, forming a concentrated and tight structure.

Third, the double lines of light and dark are criss-crossed and fascinating. The conflict between Zhou Puyuan and Fan Yi is a bright line, while the relationship between Zhou Puyuan and Shi Ping is a dark line. These two clues coexist, interweave, influence and clamp each other at the same time, which makes the plot tense, tortuous and fascinating.

Finally, on the basis of the reappearance of the old scene 30 years ago, the drama contradiction was pushed to * * *, and a series of tragedies broke out. This ending has strong logic and irresistible persuasion. It not only vividly depicts the characters, but also profoundly reveals the theme of the work.

The unique structure of Thunderstorm makes it an excellent drama with China characteristics, full of drama and explosiveness. So some people say, "It thundered and rained at sea that year." . This is an excellent creation made by the author on the basis of drawing lessons from the rich experience of excellent foreign plays and taking care of the art appreciation habits of the masses in China.

Natural phenomena: shock, excitement and grandeur.

When a thunderstorm comes, there are often strong winds and thunderstorms. big

The amazing scene of the sky before the thunderstorm (1 1 photo)

The wind came, flying sand and stones, the roof was overturned and the wall was blown down. In the storm, things in the street danced with the wind, flying everywhere and even uprooting trees!

What should we pay attention to in thunderstorm weather?

Attention should be paid to the following points when lightning occurs:

Stay indoors and close the doors and windows; When you can't hide in a building with lightning protection facilities in the wild, you should take down metal objects such as watches and glasses, and never take shelter from the rain near power sources, trees and telephone poles; Minimize the height of the car body to reduce the risk of being directly struck by lightning; Keep your feet as close as possible, and the less contact with the ground, the better, to reduce the "step voltage"; The best shelter in the wild is caves, ditches, canyons or open spaces under big trees.

Television, audio and other electrical appliances without lightning protection measures or with insufficient lightning protection measures should not be used. Keep away from open doors, windows and metal pipes. Unplug the electrical appliance and turn off the electrical appliance and natural gas switch. Never use hair dryers, electric razors, etc. It is not advisable to use a faucet.

Do not touch live devices, such as antennas, water pipes, barbed wire, metal doors and windows, external walls of buildings or other similar metal devices, and do not collect clothes on clotheslines or wires. Do not install fences, telephones or transmission lines, pipes or building steel. Do not handle flammable items in open containers.

Do not or reduce the use of telephones and mobile phones. Don't stay near iron fences, metal clotheslines, overhead metal bodies and railway tracks. Don't stand on the top of the mountain, on the roof or near objects with high conductivity. It is not suitable to enter and approach low-rise buildings such as buildings without lightning protection facilities, garages, carports, temporary shacks and sentry boxes.

Do not swim or engage in other water sports or activities, and do not stay in swimming pools, lakes, beaches, paddy fields and boats. Not suitable for outdoor ball games, holding an umbrella in the open space, carrying a hoe, shovel, badminton racket, fishing rod and golf club on his shoulder.

When you feel charged, such as your hair standing up, or your panel is obviously shaking, you should know that you may get an electric shock. After the lightning, you should immediately fall to the ground and ask for help.

Not suitable for riding horses, bicycles, motorcycles and tractors. Cars are often excellent lightning protection facilities. Because of their shielding effect, if they are struck by lightning in time, they will not hurt people. How should units guard against lightning disasters?

Units shall regularly detect lightning protection facilities by qualified professional lightning protection detection institutions, and evaluate whether the lightning protection facilities meet the requirements of national standards.

Units shall set up persons responsible for preventing lightning disasters to be responsible for lightning protection safety work, establish various lightning protection safety work norms, and establish a regular inspection system for lightning protection facilities. After a thunderstorm, safety inspection should be carried out and daily maintenance of facilities should be done. After the thunderstorm, check whether the overvoltage protectors installed on the power supply and signal lines of telephone program-controlled switches, computers and other electrical equipment are damaged, and replace them in time if found damaged.

In the design and construction of lightning protection facilities, the construction unit shall comprehensively consider factors such as geology, soil, meteorology, environment, characteristics of protected objects and laws of lightning activity, and adopt safe, reliable, technologically advanced and economical design and construction methods.

Lightning protection devices, devices and equipment whose technology and quality meet the national standards should be adopted, and non-standard lightning protection products and devices should be avoided.

When installing new building equipment, such as re-laying computer network routing, shifting and heightening outdoor antenna, the lightning protection system should be redesigned and constructed at the same time.

When a lightning disaster occurs, it should be reported to the relevant departments in time so as to deal with it in time and avoid being struck by lightning again.

What are the characteristics of thunderstorms?

Do you mean the article Thunderstorm or the real thunderstorm?

What was the scene before and after the thunderstorm?

The scene before the thunderstorm was shrouded in dark clouds. The leaves on the tree moved.

It was raining cats and dogs in the thunderstorm.

After the thunderstorm, the thunder and rain stopped.

What should we pay attention to in thunderstorm weather?

1, when it thunders, the first thing to do is to close the doors and windows to prevent lightning from hitting the room directly or preventing spherical lightning from floating into the room. When encountering thunderstorm, people should not stand under the light bulb, but cut off the power supply of household appliances to avoid damage. 3. In thunderstorm weather, try not to dial, answer the phone or use the mobile phone to surf the Internet. Unplug the power supply, telephone lines, closed TV lines and other metal lines that may introduce lightning. 4, indoor, should also be left with the driver's metal pipes and sewer pipes connected to the roof. Don't pull the wires used to dry clothes and bedding to the window or door, lest the wires cause death. Outdoor lightning protection 1, thunderstorm weather, don't answer and call the mobile phone outdoors, because the electromagnetic wave of the mobile phone can also cause lightning. At the same time, it is forbidden to get close to some running power facilities when it thunders. Under normal circumstances, people will not be struck by lightning when riding a car, but never stick your head and hands out of the window when being struck by lightning when riding a car. 3. In case of sudden thunderstorm, when your hair becomes stiff and stands up, you should squat down, lower your height, and put your feet together at the same time to reduce the damage caused by stepping voltage. Don't take shelter from the rain under the big tree. It is best to stay 5 meters away from the tree when it thunders. 5. It is best to wear rubber shoes when going out in thunderstorm weather, which can play an insulating role. Lightning strikes have certain rules. Lightning strike is actually similar to the electric spark of charged body, which is a discharge phenomenon caused by electric field breaking through air. The tip of an object is densely charged, and the electric field nearby is strong, so it is easier to break through the air, and the discharge generates sparks. The conductor is easy to generate induced charges and discharge through the air. Therefore, objects protruding higher from the ground and objects with good conductivity are more vulnerable to lightning strikes. Lightning disasters can be prevented. On the basis of summing up experience, people have a further understanding of lightning disaster. The main measures to prevent lightning disasters are: 1. In the open field, don't let yourself be a sharp edge, that is, try to lower your height. Don't carry metal objects such as shovels, hoes and golf clubs over your head, because this will increase the chance of being directly struck by lightning. If there is nothing higher than yourself around, it will be dangerous to open an umbrella. The contact surface between human body and the ground should be reduced as much as possible to reduce the harm of step voltage. Find a valley or concave ground, and squat down on the flat ground with your feet together when necessary, which not only reduces the height, but also prevents the step voltage. In the suburbs, it is best to hide in buildings with metal doors and windows or lightning rods, or in cars with metal bodies. Once these buildings or cars are struck by lightning, their metal frames or lightning protection devices or the metal itself will collect lightning current to the ground. In the dense forest, it is best to find a clearing in the forest, choose a place as far away from the surrounding trees as possible, and kneel with your feet together. It is extremely unsafe to hide under a big tree to avoid thunderstorm, because this tall object is easily struck by lightning, which will produce lateral flashover, contact voltage and step voltage, and even cause death in severe cases. In addition, isolated huts, thatched cottages, pavilions, etc. Poor conductivity, easy to catch fire or collapse when struck by lightning. Stay away from these places in case of lightning. 4. Traveling in mountainous areas, such as Luyu Cave, can also enter lightning protection. Standing in a cave with your feet together, no part of your body can touch the wall or ceiling of the cave. Because the cave is a part of the earth's surface, once it thunders, contact voltage and step voltage may cause death. When there is lightning, it is best not to go fishing, boating or swimming in lakes, rivers and oceans, because these conductors are easy to attract lightning. Do not approach or touch any part of lightning protection device to prevent side flashover, contact voltage and step voltage. 6. During lightning, it is best not to ride a horse, bike, motorcycle or tractor in a flat open area, because you may become a prominent object in the surrounding environment and attract lightning strikes. 7. When lightning strikes, the room is relatively safe, but there are also many cases of casualties caused by lightning strikes. Most indoor casualties are caused by fires caused by lightning. In addition, many people are struck by lightning because they are close to or in contact with indoor metal pipes, such as water pipes, toilets and indoor circuits leading to household appliances. When lightning strikes a room without lightning protection device, lightning current will generally enter the room along telephone lines, lighting wires or outdoor TV antennas, and enter the ground along water pipes or wires. When people touch the above objects, their bodies become part of the lightning current path. When some metal pipes in the room are not well grounded, lightning current sometimes discharges from these conductors to the human body through the air gap. If the indoor floor and wires are wet, ......

What kind of weather will it be after a thunderstorm?

It may still be rainy or sunny, and I feel it myself.