Why do stalactites grow downward and stalagmites grow upwards?

Because so Pea Mimi, you don't know I don't blame you.

The main component of stalactites is calcium carbonate, which reacts with water and carbon dioxide under certain conditions to form calcium bicarbonate that can be dissolved in water, and the water dissolved with calcium bicarbonate changes in the process of flowing, or when it drips, the temperature changes, and the soluble calcium bicarbonate decomposes to form insoluble calcium carbonate, so stalagmites and stalactites of different shapes appear. It is the accumulation of millions of years over a long period of time, not a momentary formation.

The caves are distributed in the mountains composed of limestone, the main component of limestone is calcium carbonate, when it encounters water dissolved with carbon dioxide, it will react to form calcium bicarbonate with greater solubility; When the water dissolved in calcium bicarbonate is heated or the pressure suddenly decreases, the calcium bicarbonate dissolved in the water will decompose, regenerate calcium carbonate and deposit it, and release carbon dioxide at the same time. When the water at the top of the cave is slowly leaking downward, the calcium bicarbonate in the water undergoes the above reaction, some are deposited at the top of the cave, some are deposited at the bottom of the cave, the stalactites of the top of the cave are formed over time, and the stalagmites at the bottom of the cave are formed, and when the stalactites are connected with the stalagmites, the stone pillars are formed.

Problem 1: Use some like, some like, some like. Write what the stalactites and stalagmites look like You're probably asking what the stalactites and stalagmites can be likened to.

Literature and art Some are like new bamboo shoots in spring, some are like ice skates reflecting snow in winter, some are like the giant pillars of optimus in mythology, and some are like the torches of the legendary saints.

Question 2: What do the stalactites and stalagmites look like (using a comic metaphor) 5 points There are also stone stalactites and stalagmites with different shapes and colors in the cave, which are very beautiful and magical

Some are like fluttering fairies, bringing us the enjoyment of beauty;

Some are like giant pillars, which make us feel its majestic momentum;

Some are like the jade rabbit next to Chang'e, which makes us feel that it is so soft and well-behaved;

Some are like an old grandfather, looking at his two grandsons, especially nailed to the experience;

Some are like the "Ganoderma lucidum pillars" that stand up to the sky, which are so special;

Some are like a lot of upside-down dragon heads, as if to praise the culture of our country.

Question 3: What is the difference between stalactites and stalagmites? Stalactite, refers to the carbonate in the carbonate area in the cave in the long geological history and under specific geological conditions formed by different forms of calcium carbonate precipitates such as stalactites, stalagmites, stone pillars, etc.

It is a calcium carbonate deposit that grows downward at the top of the cave. Stalagmites are calcium carbonate deposits that grow from the bottom to the bottom of the cave. Their main ingredient is calcium carbonate.

When calcium carbonate encounters water dissolved in carbon dioxide, it will react to form calcium bicarbonate with greater solubility; When the water dissolved in calcium bicarbonate is heated or the pressure suddenly becomes smaller, the calcium bicarbonate dissolved in the water will decompose, regenerate calcium carbonate and deposit it, and release carbon dioxide at the same time.

Stone stalactites and stalagmites are varied in shape and have different colors, which can be like a little white rabbit with a living wave, or like a young girl with Tingting jade orange eggplant, and like a round imitation of the sea god needle, like a big pillar. In addition, stone stalactites and stalagmites are like fluttering fairies, like giant pillars like optimus, like jade rabbits around Chang'e, and like many upside-down dragon heads.

From top to bottom grow stone stalactites. The stalagmites are shaped like bamboo shoots unearthed and grow from the bottom up. Stalagmites and stalactites grow slowly, growing about one meter tall in 10,000 years.

Due to the long formation time, in the limestone, water containing carbon dioxide seeps into the limestone crevices and reacts with calcium carbonate to form calcium bicarbonate that is soluble in water. When calcium bicarbonate-dissolved water drips from the roof of the cave, it decomposes and reacts to form calcium carbonate, forming stalactites and stalagmites.

Stone stalactites: Each stalactite begins with a drop of water loaded with minerals. When the water droplets fall, a thin little calcite circle is left behind.

The next droplets continue to linger and descend into new circles of calcite early. Eventually, these calcite circles form very thin (millimeter meters) of hollow tubes, commonly known as "soda tubes". Soda pipes can grow very long, but they are very fragile.

If they are clogged by debris, water will flow through the outside and precipitate more calcite, forming cone-shaped stalactites. Similarly, the falling droplets precipitate more calcite after reaching the ground, eventually forming round or conical stalagmites. Unlike stalactites, stalagmites are formed without a hollow "soda tube".

If it is long enough, stalactites and stalagmites will fuse together to form stone pillars.

Stone stalactites are stone pillars condensed on the top of the cave when the water droplets containing calcium carbonate on the roof of the cave drip downward, and stalagmites are stone pillars formed after the water droplets on the top of the cave are formed after precipitation on the ground. Their main ingredient is calcium carbonate.

Stalactite, refers to the carbonate rock area caves in the long geological history and under specific geological conditions formed in the long geological history and under specific geological conditions of different forms of calcium carbonate precipitates are a general term. When calcium carbonate encounters water dissolved in carbon dioxide, it will react to form calcium bicarbonate with greater solubility; When the water dissolved in calcium bicarbonate is heated or the pressure suddenly decreases, the calcium bicarbonate dissolved in the water will decompose, regenerate calcium carbonate and deposit it, and release carbon dioxide at the same time.

To put it simply, a stalactite grows from top to bottom, and stalagmites grow from bottom to top.

Stone stalactites are mostly cylindrical or conical, with different lengths and thicknesses, and their surfaces are white, gray-white or brownish-yellow, rough and uneven. Weight, hard and easy to smash, the section is relatively flat, the section color is white to light gray-white, slightly light brown, the light observation has a shining star-like bright light, there are often round holes near the center, and there are many light orange-yellow concentric rings around the round holes, and some can see radial textures.

Stalactite, also known as stalactite, refers to the general term of different forms of calcium carbonate deposits such as stone stalactites, stalagmites, and stone pillars formed in caves in carbonate rock areas in a long geological history and under specific geological conditions.

The formation of stalactites often takes tens of thousands or hundreds of thousands of years. Due to their long formation time, stalactites have important research value for ancient geological investigations.

In limestone, water containing carbon dioxide seeps into the limestone crevices and reacts with calcium carbonate to form calcium bicarbonate that is soluble in water. The dissolved calcium bicarbonate turns into a solid (called curing). It is formed by gradually growing from top to bottom, which is called "stalactite".

It can be used as medicine. > chemical origin: karst caves are distributed in the mountains composed of limestone, the main component of limestone is calcium carbonate, when encountering water dissolved with carbon dioxide, it will be anti-hunger to produce calcium bicarbonate with greater solubility; When the water dissolved in calcium bicarbonate is heated or the pressure suddenly decreases, the calcium bicarbonate dissolved in the water will decompose, regenerate calcium carbonate and deposit it, and release carbon dioxide at the same time.

When the water at the top of the cave is slowly leaking downward, the calcium bicarbonate in the water undergoes the above reaction, some are deposited at the top of the cave, some are deposited at the bottom of the cave, the stalactites are formed at the top of the cave over time, and stalagmites are formed at the bottom of the cave, and when the stalactites are connected with stalagmites, they form stone pillars.

Stone stalactites and stalagmites are limestone structures formed in underground caves, and they differ in form and appearance.

Stone stalactitesIt is a downward-growing stalactite, and its shape resembles an upside-down bell, hence the name. Stone stalactites are usually formed by water droplets falling on the roof of the cave, and the limestone in the water droplets is deposited on the roof of the cave, gradually forming the stone stalactites. Stone stalactites come in a variety of shapes, some resemble slender needles, some resemble stout pillars, and some resemble flake-like structures.

The surface of stalactites is usually smooth, sometimes with some tiny bumps or depressions.

StalagmitesIt is a stalactite that grows upwards and is shaped like a bamboo shoot, hence the name. Stalagmites are usually formed by calcareous deposits in groundwater on the bottom of the cave, and over time the stalagmites gradually grow upwards. The stalagmites also have different shapes, some resemble slender needles, some resemble stout pillars, and some resemble flake-like structures.

The surface of stalagmites is usually rougher than that of stalactites, sometimes with some bumps or depressions.

In short, stalactites and stalagmites are limestone structures formed in underground caves, and their morphology is different from that of the outer stool. A stone stalactite is a stalactite that grows downwards and is shaped like an upside-down bell, whereas a stalagmite is a stalactite that grows upwards and is shaped like a bamboo shoot. They come in all shapes, but they are all some of the most amazing natural landscapes on earth.

Stone stalactites and stalagmites look like this:

1. Stone stalactites.

It is a stalactite-like aggregate, slightly conical or cylindrical. The surface is white, grayish-white or brownish-yellow, rough, uneven. Weight, hard, flat cross-section, white to light white, bright light with a flashing star, there is often a round hole near the center, and there are many light orange-yellow concentric rings around the hole.

2. Stalagmites. The stalagmites are shaped like bamboo shoots and grow from the bottom up. Stalagmites are formed by the precipitation of calcium carbonate water through the cracks in the roof of the cave or from the stalactites to the bottom of the cave, on the one hand, due to the evaporation of water, and on the other hand, due to the sometimes higher temperature in the cave, the amount of CO2 dissolved in the water decreases, so the calcium precipitates and deposits at the bottom of the cave.

The stalagmite is the Li Sheng brother of the stalactite. When water drops from the roof of the cave, limestone is also deposited on the ground, slowly forming upward-growing stalagmites. And the stalagmite has a large chassis, which is relatively stable and not easy to break, so it tends to grow faster and thicker than the stalactite.

Chemical Causes:

Take a large teacup (or test tube), dissolve a small amount of hydrated lime (i.e. calcium hydroxide) in water, let it stand for a while, and the undissolved hydrated ash will be deposited at the bottom of the cup, and the cup is divided into two layers at this time: the upper layer is lime water as clear as water, which contains dissolved calcium hydroxide; The lower layer is lime milk, which is cloudy.

Carefully pour the top layer of clear lime water into a test tube about 2ml and blow into the lime water through a glass tube (you can also use a plastic tube – the same straw used for drinking soda). Since the exhaled air of the human body contains carbon dioxide, lime water reacts with it to form white solid limestone that is insoluble in water, and the lime water becomes turbid.

Continue to blow into the turbid lime water, and soon it will become clear again, and as carbon dioxide and calcium carbonate work together to produce calcium bicarbonate that can be dissolved in water, the turbid liquid will become clear as the precipitate dissolves. In nature, many limestone areas have formed strange peaks and caves for this reason, and stalactites and stone reputation bamboo shoots have grown.

Stone stalactites and stalagmites have their own shapes.

Stone stalactites, stalagmites, and fairies that are about to flutter bring us the enjoyment of beauty.

The stalagmite is like a giant pillar of optimus, which makes us feel its majestic momentum.

The stalagmite is like the jade rabbit next to Chang'e, which makes us feel that it is so soft and well-behaved.

The stalactites are like an old grandfather looking at his two grandsons, which is particularly affectionate.

The stalactites grow from the bottom of the cave to the top of the cave like a rod, and it is so special. Stalactites and stalagmites are very common rock structures in geology, formed in caves and groundwater. Stalactites and stalagmites are similar in morphology, but there are some differences in their growth direction, shape, etc.

Stone stalactites usually appear to be infiltrated and cultivated in the shape of stalactites, with the tip downward, the bottom expands into an umbrella shape, and the overall shape resembles an upside-down bell, hence the name. Stone stalactites are generally slow to grow, and as groundwater enters the cave through the cave crust, the droplets dripping from the tips of the stone stalactites will coalesce into lime deposits, which gradually accumulate over time to form stone stalactites.

The stalagmite is relatively finely ground by liquid, shaped like a sharp cone, mainly due to the water dripping from the top of the stalagmite, coming to its parent body and accumulating and forming, the stalagmite is like a semicircular section, some sides are flat and smooth, the length is different, and some even have branches.

Stalactites and stalagmites come in a variety of shapes such as branches, hair, towers or cones, and are often very regular and beautiful, but their shapes vary with geological conditions, limestone, water quality, water quantity, flow rate, etc., and each stalactite and stalagmite is unique. <>