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Electricity is a majestic and somewhat intimidating electrical discharge phenomenon accompanied by lightning and thunder. Thunder and lightning are generally generated in cumulonimbus clouds with strong convection, so they are often accompanied by strong gusts of wind and heavy rain, and sometimes hail and tornadoes. The top of the cumulonimbus cloud is generally high, up to 20 km, and the upper part of the cloud often has ice crystals.
Processes such as the attachment of ice crystals, the breaking of water droplets, and the convection of air cause electric charges to be generated in the clouds. The distribution of charges in the cloud is more complex, but in general, the upper part of the cloud is dominated by positive charges and the lower part is dominated by negative charges. As a result, a potential difference is formed between the upper and lower parts of the cloud.
When the potential difference reaches a certain level, an electric discharge will be generated, which is our common lightning phenomenon. The average current of lightning is 30,000 amps, and the maximum current can reach 300,000 amps. The voltage of lightning is high, about 100 million to 1 billion volts.
A moderate thunderstorm can reach 10 million watts, which is equivalent to the output of a small nuclear power plant. During the discharge, due to the sudden increase in temperature in the lightning channel, the volume of air expands dramatically, resulting in a shock wave that causes a strong thunderclap. When a charged thundercloud comes close to a protrusion on the ground, a violent discharge occurs between them.
At the site of the lightning discharge, there will be a strong flash of light and a roar. This is the lightning and thunder that people see and hear.
Rain is the water droplets that fall from the clouds, the water on the surface of the land and the sea evaporates into water vapor, the water vapor rises to a certain height and then becomes small water droplets when it is cold, these small water droplets form clouds, they collide with each other in the clouds, merge into large water droplets, and when it is too big for the air to support, it falls from the clouds and forms rain. Reference: Encyclopedia.
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God's energy release.
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Thunder and lightning will occur on rainy days because when the air is extremely unstable, it is prone to strong upward convective movement, and the formation of towering cumulonimbus clouds, the clouds are filled with water vapor rushing up and down, which will produce static electricity, and the upper and lower ends of the cloud will produce electric charges, and the air will expand in an instant** to produce thunder, and the electric sparks emitted are lightning.
When it rains, some of the clouds in the sky are positive and some are negative. When two clouds collide, lightning strikes, and at the same time emits a lot of heat, heating and expanding the surrounding air. The air that is heated and expanded in an instant will push the surrounding air, causing a strong **-type vibration, which is thunder.
Thunder and lightning are the phenomenon of electrical discharge in thunderstorm clouds. The formation of thunderstorm clouds generally requires two conditions, sufficient water vapor and violent convective movements.
Lightning is a phenomenon of intense electrical discharge between clouds, between clouds and the ground, or between parts of the cloud. Usually storm clouds (cumulonimbus clouds) produce electric charges, with yin electricity at the bottom and yang electricity at the top, and also a positive charge on the ground, which follows the clouds like a shadow. Positive and negative charges attract each other, and the positive charges run towards trees, hills, the tops of tall buildings, and even above the human body, reaching down and getting closer to the ground.
Finally, the positive and negative charges finally overcame the barrier of air and connected, and a huge electric current surged along the conduction airway from the ground to the clouds, and lightning was generated.
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It doesn't have to be thunder when it's raining, and it's not necessarily raining when it's raining. However, thunder often rains, because thunder often occurs when the air state is unstable, there is convective cloud activity in the atmosphere, two convective clouds with different or opposite directions of movement contact each other, resulting in friction, static electricity is generated between the two convective clouds, and electrostatic discharge forms thunder. If there are hot and humid clouds and cold and dry clouds in the convective clouds, the convection of the two clouds will change the internal state of the hot and humid clouds, causing the water vapor in them to precipitate and become raindrops falling to form rain.
If the convection of the two convective clouds does not constitute a condition for rain, then it will not rain. The Earth's revolution produces seasonal changes. Since the earth is an opaque planet, the sun and stars give the earth light, and the side that shines on the sun is day, and the other side is the night.
The earth is constantly rotating from west to east around its axis of rotation, and the phenomenon of celestial bodies rising in the east and setting in the west is a reflection of the earth's rotation. One rotation of the earth is equivalent to the week when the sun rises in the east, sets and rises again, and it is also our daily day. As the Earth rotates, it revolves around the Sun, which rotates from west to east.
The orbit of the Earth's revolution is an ellipse that is close to a perfect circle, and the Sun is located in a focal point. The Earth's orbital period is one year, and astronomically it is 365 days, 5 hours, 48 minutes and 46 seconds. The angle between the Earth's orbit (ecliptic plane) and the Earth's rotation plane (equatorial plane) is 23 degrees 26 minutes, which causes the direct point of the Sun to move between the Tropic of Cancer in a one-year cycle, forming the four seasons in temperate regions.
On March 21 every year, the direct sun point moves from south to north to the equator, and the global day and night are equinox, which is our vernal equinox day, and on June 22, the direct sun point moves north to the Tropic of Capricorn, becoming the longest day in the northern hemisphere, which is what we call the summer solstice, and then the direct sun point turns to move south, and on September 23, it hits the equator directly, which is the autumnal equinox, and on December 22, it moves to the Tropic of Capricorn, and it is our winter solstice. The change of seasons is actually the result of the combined effect of the earth's rotation inclination and revolution around the sun, without one of these conditions, the change of seasons will not occur, and everything on the earth will change accordingly.
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It doesn't have to rain. Thunder and lightning is between the clouds with positive and negative electricity, when approaching because of the instantaneous high-voltage and strong current discharge and the luminous sound heat production phenomenon, it can only indicate that the clouds have more charge at this time, and the water saturation of the clouds has nothing to do with the clouds, so it will not necessarily rain.
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Thunder and lightning do not necessarily cause rain, generally in summer when the weather is dry, it is easy to thunder and lightning, most of them will rain, sometimes it will not rain.
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Not necessarily. If there are cumulonimbus clouds, thunder and lightning may occur, but it will not rain if there is not much moisture.
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Thunder and lightning have a higher chance of raining, but it doesn't necessarily rain, isn't there a saying that dry thunder doesn't rain, which means that it doesn't necessarily rain if thunder and lightning happens.
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Thunder and lightning do not necessarily rain, because sometimes the wind blows the clouds away and there are no raindrops.
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This is not necessarily, it is common when there is dry thunder and no rain.
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Not necessarily, there are cases where there is dry thunder and no rain.
It will not rain if the weight of the dust in the clouds is not enough to fall, or the temperature difference does not change much, or the clouds are blown away.
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Not necessarily, sometimes it doesn't rain, but it rains more than 80 percent of the time.
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Not necessarily, I've experienced thunder and lightning many times myself, but it just doesn't rain.
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Thunder doesn't have to happen, but lightning does rain.
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Thunder and lightning usually occur in cumulonimbus clouds, but it does not necessarily rain when there is thunder.
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Most of the time it is, but sometimes it doesn't rain because the cumulus clouds don't rain if they are blown away by the wind.
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Not necessarily, sometimes there is no sound but no rain.
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Have you ever heard the saying that dry thunder doesn't rain? So it's not like it rains as long as there is thunder, in fact, it depends on the dark clouds.
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According to the physical phenomenon, the propagation rate of light in the air exceeds the propagation rate of sound, so it is common to see lightning first and then hear thunder on rainy days.
In detail, in fact, in the distance, thunder and lightning occur at the same time, (lightning strikes are clouds from the link of fitness movement, causing a positive charge, and the positive charge will cause a spark discharge when charging and discharging, not only with light but also with sound), and light travels 3,000,000 kilometers per second, and the sound only travels kilometers in the air for one second, and the speed of the wave is only one-ninety thousandth of the speed of light. As a result, light travels quickly, while sound is much slower, which is why people see the situation in their daily lives, "when it rains, there is often thunder and lightning, but lightning is seen first, and then thunder is heard."
1.Temperature endangers the density of the air, the high temperature, the density of the air is small, and the friction resistance obtained by the sound wave frequency in the whole process of propagation is small, so the wave speed is relatively large, so the sound does not necessarily propagate along the parallel line after being transmitted from the sound source.
2.Speed of light: The rate at which radio waves propagate in a vacuum pump. The speed of light is the highest rate at which nature objects can be exercised.
3.100 million light-years: Length unit conversion, taking into account the spacing between stars.
4.Occurrence of lightning:
Flames occur because of the separation of positive and negative charges between this and that cloud in a cumulonimbus cloud and between the cloud and the road surface.
Small raindrops, hailstones, and small snowflakes during the landing process will cause the separation of positive charges, like rubbing a balloon on a cashmere sweater. Rainfall caused by fitness exercises in the clouds also causes some of the clouds to be negatively charged cores and another part to be positively charged.
When the difference between positive and negative charges is too large for the gas to be blocked, a charge-discharge situation will occur, and a fire will occur, that is, lightning. When lightning is generated, the temperature of the gas in the lightning area may reach 27,760°C, which is also twice the temperature of the sun's surface. The high-temperature vapor rapidly expands into the air outside the lightning province, resulting in a very large sound wave frequency at the edge of the lightning, that is, lightning travels at the speed of light, reaching 299338 kilometers per second; Thunder travels at a speed of only 317 meters per second, so everyone will see lightning first.
In a heavy rainstorm, if you want to know how far away from lightning is, count them from the moment of lightning until you hear thunder. Pay attention to the way of counting with 1-1000, 2-1000, 3-1000, and each count indicates that the lightning is outside. In other words, if you count to 3-1000 whole parts, then the distance of lightning is 3 times that of a kilometer, that is, about 1 kilometer away.
If there is almost no gap between lightning and thunder, then the lightning is getting closer and closer, and there is a good chance that you will be in trouble.
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When it rains, you see lightning and then hear thunder because light travels faster than sound, so you see lightning first and then hear thunder.
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Because it is a natural phenomenon, and it is also scientifically based, and lightning is faster than thunder, so this phenomenon occurs.
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Because the speed of light is faster than the speed of sound, when it rains, lightning is seen and then thunder is heard.
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1. The formation of thunder, a cloud with a negative electrode and a cloud with a positive electrode, contact together will produce sparks, in the process of generation, there will be a large number of electrons moving and colliding, and the sound will be made when the slip is called, and thunder will be formed.
2. The generation of land vertical lightning, when the sky produces lightning and wax, there will be a lot of clouds around, those clouds are charged, some are positive, some are negative, when the positive and negative electrodes are in contact together, sparks will be generated. Because the voltage of the ground is 0, in other words, the ground is a conductor without voltage, at this time, those charged clouds in the ground and the sky form a conductor, and if you move along the conductor, the electricity will move to the ground, and lightning will be formed.
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1. The formation of thunder, a cloud with a negative electrode and a cloud with a positive electrode, contact together will produce sparks, in the process of generation, there will be a large number of electrons moving and colliding, it will make a sound, and thunder will be formed.
2. The generation of lightning, when the sky produces lightning, there will be a lot of clouds around, those clouds are electrified, some socks are positive, some are negative, when the positive and negative electrodes are in contact together, sparks will be generated. Because the voltage of the ground is 0, in other words, the ground is a conductor without voltage, at this time, those electrified clouds in the ground and the sky form a conductor, and if you move along the conductor, the electricity will move to the ground, and lightning will be formed.
Why does it rain.
As rivers, rivers, lakes, and seas are exposed to the sun, water becomes water vapor. The water vapor rises and turns into small droplets, and finally into clouds. The small water droplets or Xiaoice crystals that make up the cloud are supported by the air flow below, and the rising air flow is constantly transporting the water vapor below the cloud to the cloud. >>>More
This is because light travels much faster than sound. Light travels almost 300,000 kilometers per second in the air, and at such a speed, it can travel seven and a half times around the Earth's equator in one second. Sound travels about 340 meters per second in the air, almost 1/900,000th of the speed of light. >>>More
The lightning is too far away, the sound receives many obstacles along the way, the sound is greatly weakened, it mostly depends on the medium of air, and the light can travel in a vacuum, so the sound disappears, and the light remains. That's why sometimes you only see lightning on the ground and don't hear thunder!
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