“What kind of seed is small in body, but there are many places in the forest and under the sea?”
In round 3, episode 17, season 3 – show Fast like lightning presented a difficult but no less interesting puzzle. The quiz has the following content:
“What kind of seed is tiny?
There are many places in the forest and under the sea?”
Source: Lightning fast.
To this question, neither the players nor the audience present in the studio had an answer. The correct answer given by MC Truong Giang is: SAND.
As suggested by the puzzle, this is indeed a grain of sand. Because sand is very small in size, it appears everywhere, both in the forest and in the sea. This question is not too difficult, but to give the answer in the fastest time is a big challenge for players.
For those who do not know, sand is a granular material of natural origin, consisting of small and fine grains of rock and minerals. In the field of geology, the average size of sand grains is from 0.05mm to 1mm in diameter.
Sand has high application in industrial production. Sand is used in construction and road construction as foundation, as a building material in mortar (with slaked lime or cement). Yellow sand is the main ingredient in concrete production. People also use sand to make glass. Sand is also used to fight fires in some places such as gas stations and fire stations.
Illustrated photo.
In agriculture, suitable sandy soils will be used to plant fruit trees such as watermelons, peaches, peanuts, etc. Sandy soil is also the preferred material in creating the foundation for cattle farms. milk because of its good drainage.
Besides, sand also has applications in art. There are many sand castle building competitions. Or sand animation is a type of performance art and a technical tool for the production of cartoons. In aquariums, people also use sand and gravel for decoration.
Sand is generally not harmful to health. However, we still have to be careful in some operations using sand, such as polishing the surface with high pressure sandblasting. People who work with sand should wear goggles and a mask to avoid getting sand in their eyes or breathing in dust.
Sand can form quicksand in areas of excess water with high tension, as it melts. As it dries, the sand forms obstacles to the creatures trapped in it, often causing them to die.
at Blogtuan.info – Source: Afamily.vn – Read the original article here
