How elephants communicate with their voices

Elephants can communicate through infrasound, and they hear it clearly, but we humans can't. Infrasound refers to sounds with frequencies below 20 Hz.

Elephants, especially females, often communicate with a deep roar, and each elephant has its own voice. This is a low-frequency sound that can only be heard by the human ear with the help of instruments.

In addition, the elephant has a very rich body language, his ears, nose, tail and posture all indicate his thoughts and emotions, such as shaking his head and constantly flapping his ears to express displeasure.

The elephant vibrates and makes a sound, opening its mouth to bark.

Elephants can communicate with infrasound waves, which humans can't hear, and can generally travel up to 11 kilometers without interference. If the medium is uneven due to air currents, it can only propagate for 4 km. If there is communication in such a situation, the herd will stomp its feet together to produce a powerful roar, which can travel up to 32 kilometers.

The main species of elephants are African elephants, common African elephants, and Asian elephants, and their main external characteristics are flexible and muscular proboscis and large fanned ears. Its trunk has the function of wrapping and is a powerful tool for elephants to defend themselves and take food. Elephants have a long lifespan, generally living to be around 70 years old, reaching sexual maturity between 10 and 15 years of age, and gestation for about 22 months after mating.

The role of elephant ears

1. Elephants living in the tropics must maintain a moderate body temperature, if the elephant's body temperature is too high, they may die, so they must excrete excess heat from their bodies. Generally, animals can dissipate heat in their bodies through **, and elephant ears just play a role in dissipating heat.

2. When the weather is hot, the elephant will constantly fan its ears to make the cooler air touch the surface of the ears and take away the heat flowing through the ears, which can prevent the body temperature from rising. When the temperature is relatively low in the morning and evening, the elephant will put its ears tightly on the shoulder, which can reduce the loss of body heat and always maintain a constant temperature in the body, so the elephant's ears are not only the elephant's hearing organ, but also the elephant's organ to regulate body temperature.

Answer: The elephant communication "sound" is a kind of infrasound wave, its frequency is lower than 20Hz, which is not within the range of sound frequency that the human ear can hear, so humans cannot hear the communication "sound" between elephants; But humans can hear the elephant's call, and this sound is not infrasound, so people can hear it

Because the "sound" of the elephant is a kind of infrasound wave, its frequency is less than 20Hz, which is not within the range of sound frequencies that can be heard by the human ear, so humans cannot hear the communication "sound" between elephants;

Therefore, choose D

The onomatopoeia for elephant calls is "moo".

Onomatopoeia: It is a word created to simulate the sounds of nature, and it is an ingredient that all languages in the world have. Although onomatopoeia is also a natural sound, it is very subjective.

The onomatopoeia for elephant calls is "moo".

At that moment, dozens of guests arrived one after another, and three people wearing square scarves and a Taoist priest came behind, and they walked in, and everyone didn't recognize them. One of them wore a square scarf and said, "That is Mr. Ji Tianyi?"

Ji Tianyi said: "The little brother is." What do you have to say, sir?

The man took out a letter from his sleeve and said, "Brother Ji Wei is very respectful." Ji Tianyi continued, opened it with Xiao Jinxuan and Zhuge Tianshen, and realized that it was Xin Dongzhi, Jin Yu Liu, Guo Tiebi, and Lai Xiashi, and said:

Have a seat. "When the four of them saw that something was going on here, they were going to take their leave. The monk palace pulled him and said:

Four came from afar.

Researchers at a British university recorded the low-frequency calls of African elephant mothers in a national park in Kenya, the language used by elephants to identify individuals and part of elephants' social life. After recording which elephants met regularly and which did not, the researchers showed the calls to a group of 27 elephants to listen to and observe their reactions.

If they recognize the elephant that makes the call, they will respond, and if they don't, they will either simply ignore it or just listen without any response.

Studies have shown that they are able to distinguish sounds from 14 other elephant groups, and the researchers believe that each African elephant can recognize the calls of more than 100 other elephants. In 1985, Perth He, a researcher at Cornquar University in New York, USA, observed a herd of elephants when he suddenly felt an intermittent vibration in the air. Perth also found that the tremor coincided with the fluttering of an elephant's forehead eyebrows.

Later, Ms. Perth and her colleagues confirmed her hypothesis with an advanced ultrasonic recording instrument: the vibrations she had felt were caused by low-frequency sound waves, which humans could not hear and could be recorded on tape. Researchers also found that females communicate with males through concrete walls!

Answer: The elephant communication "sound" is a kind of infrasound wave, its frequency is lower than 20Hz, which is not within the range of sound frequency that the human ear can hear, so humans cannot hear the communication "sound" between elephants; But humans can hear the elephant's call, and this sound is not infrasound, so people can hear it

Answer: The elephant communication "sound" is a kind of infrasound wave, its frequency is less than 20Hz, which is not within the frequency range of the sound that the human ear can hear, so humans cannot hear the key communication "sound" between elephants; But humans can hear the call of an elephant, and this sound is not a high-pitched voice, so people can hear it