What are some sentences to describe a child s joy playing with sand?

1. The children happily ran to the beach, their smiles brighter than the sun in the sky;

2. Looking at the smiles on the faces of the parents of the orange mess, the children are more unscrupulous and have a lot of fun;

3. Look at the round ant stall, which is the ancient castle built by the children themselves, and their confused eyes seem to have entered the ancient castle;

4. The fish in the sea were attracted by the children's laughter and laughter, and they also came to play with them.

5. A day of their own, as if they were satisfied with eating a truckload of fruit candy.

1. The children happily ran to the beach, their smiles brighter than the sun in the sky;

2. Looking at the smiles on their parents' faces, the children became more unscrupulous and had a lot of fun;

3. Look, it is an ancient castle built by the children themselves, and their confused eyes seem to have entered the ancient castle;

4. The fish in the sea were attracted by the laughter of the children, and they also came to play with them;

5. A day of their own, as if they were satisfied with eating a truckload of fruit candy.

The short phrase for children playing with sand is as follows:

1. In the leisure time after work, taking the children to play in the sand, playing with the children and feeling our innocent happiness, all this is simply too happy!

2. Children play in the sand and talk about the unbelievably beautiful circle, which is also the only way for the outside world to reach the mountain township.

3. Children play in the sand and talk about reliving happy times, just like this for a few years.

4. Today, I accompanied the children to play on the beach by the sea, caught two small crabs, and built two sand castles, and later the castle became a lion! Watching children play selflessly, my heart is happy!

5. Today, I walked on the warm beach with the children, and saw the seagulls flying by, an arc, and small fish swimming in the water.

6. The children happily ran to the beach, their smiles brighter than the sun in the sky;

7. The seaside is a sandy beach, and the beach is full of shells of various colors and patterns. The children here have seen so much that they don't pay attention to the shells, and the shells lie there lonely.

Expand your knowledge - sand:

The most common composition of sand is silica, usually in the form of quartz, which is chemically stable and hard enough to resist weathering.

The main component of sand is silicon dioxide (SiO2), and the density of silica is, ie. Sand is made up of minerals and tiny rock fragments. Rock chips are rocks that have been eroded and weathered.

The composition of the sand varies from place to place, depending on the local rocks** and conditions.

Sand is generally divided into two categories: natural sand and artificial sand. Rock particles formed by natural conditions (mainly rock weathering) with a particle size of less than 5mm are called natural sand. Artificial sand is made of crushed rock, which is generally not used due to its high cost and many flakes and powders.

According to its different origins, natural sand can be divided into river sand, sea sand and mountain sand. The surface of mountain sand is rough, the particles are angular and angular, the amount of sand-bearing oak is high, the content of organic impurities is also more, and the quality is poor. The surface of sea sand and river sand is smooth, but the salt content of sea sand is high, which has a certain impact on concrete and mortar, and river sand is relatively clean and widely used.

The coarseness of sand refers to the average coarseness of sand grains of different particle sizes mixed together. There are usually coarse sand, medium sand, and fine sand. The particle gradation of sand refers to the ratio of sand size particles.

If it is sand of the same coarseness, the void is the largest, and the gap is reduced when the sand of the two particle sizes is matched, and the void is smaller when the sand of the three particle sizes is matched. It can be seen that the porosity of the sand depends on the degree of collocation of the particle size of the sand at all levels.

Graded sand can not only save cement, but also improve the compactness and strength of concrete and mortar. The thickness of the sand is expressed by the fineness modulus mx. The larger the fineness modulus, the coarser the sand.

According to the size range of fineness modulus, the sand is divided into coarse sand, medium sand, fine sand and extra-fine sand.