Analysis:

Nie Li, a pupil, found that bees don't make sounds by flapping their wings.

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People's Network Wuhan 2003 165438+ 10/8 Recently, the deputy head of science and technology of Jianli County, Hubei Province came to Huangxiekou Town Central Primary School to visit a sixth-grade pupil named Nie Li and asked her a question: What are the bees buzzing on?

"Bees have their own vocal organs. They don't make sounds by vibrating their wings. " Nie Li said.

In mid-August, at the 18 National Youth Science and Technology Innovation Competition held in Lanzhou, 12-year-old Nie Li wrote a scientific paper "Bees don't need wings to vibrate", and won the Silver Award for Excellent Science and Technology Projects and the Gao Shiqi Special Prize for Popular Science.

This conclusion was reached by Nie Li after observing and testing bees for more than one year.

In the autumn of 200 1, Nie Li learned from the book "Guide to Nature Learning in Primary Schools" that bees, flies, mosquitoes and other insects are dumb. They have no vocal organs, but they have screaming wings. These insects keep flapping their wings at high speed during flight, which makes the air vibrate, thus producing a buzz. Later, Nie Li also saw in "100,000 Why" that the buzz of bees came from the vibration of wings, reaching 200 times per second. If the wings stop vibrating, the sound will stop. She asked the teacher for verification, and the teacher's point of view was the same as that in the book.

Last spring, Nie Li went to a beehive to play, and found that many bees gathered on the beehive, their wings were not flapping, and they were still buzzing. So she questioned the teaching materials, popular science books and teachers' explanations and began experiments and research on bees. First, she glued the bee's wings to the board, and the bee would still make a sound. She cut off the wings of the bees, and she could hear the bees chirping. The two methods were carried out alternately for 42 times, using 48 bees each time. The experimental results show that bees can make sounds without flapping their wings. In order to explore the vocal organs of bees, she glued the bees to the board, looked for them carefully with a magnifying glass and observed them for more than a month. Finally, two black spots smaller than rapeseed were found at the root of bee wings. When the bees buzz, the black spots stir up and down. She pricked the little black spot with a needle, and the bee stopped making noise. She also found some bees. They didn't damage their wings, but just pierced the little black spots and put them into the mosquito net. Bees fly around, and there is no sound anymore. She repeated the experiment 10 times and the results were the same. She wrote this discovery into her paper and thought that the vocal organs of bees were these two small black spots.

It is reported that Nie Li's paper has been included as a collection of winning works by the organizing committee of the competition, and Nie Li's paper has also been published in the Journal of China Education Association and the Professional Committee of Nature Teaching in Primary Schools.

See people/GB/keji/1058/2196033.