Science Quiz-Catch the chance to rise posture! Why did the worm die to roll over?

Why do bugs roll over when they die? When did humans start clapping? Do radio telescopes look or listen? Do children's shoes have any doubts about such questions? Or is it a matter of course to ignore it? Now for everyone to answer ...

--Leslie Yates of California State River City

It is a physical phenomenon when a worm dies. When a worm is about to die, its blood stops flowing, the legs shrink inward, the weight of the upper body cannot be supported, so the worm will fall and die in a posture toward the sky.

Hevel, an insect scholar at the Natural History Museum, Gary F.

--The Franklyn Gubitz of New York State East Nassau

We are not yet clear about exactly when, or for what reason, clapping, or at least expressing your approval/enjoyment by making a point with your hands, and beginning to become a universal phenomenon in human society. Chimps also applaud, they do it to express excitement or other emotions, and perhaps from this point of view, applause may be one of the essential skills of modern human and chimpanzee common ancestry.

--The Natural History Museum human Origin project ancient anthropologist Briana Pobiner

--Lawrence Bricker of Silver Springs, Maryland

The principle of radio telescope is to focus and detect radio waves, and accept light waves rather than sound waves. The only difference between the telescope and the visible light is the wavelength, which is about 1 centimeters, and the wavelength is about 0.00005 centimeters. Because the wavelength of the radio waves is much larger than the visible wavelength, what you see, the radio telescope can also see, the largest radio telescope diameter can reach 100 meters.

--Mark Reid of Harvard-Smithsonian Astrophysical Center

--Louisiana Avondale's D. R. Cardinale asked

No use at all. The Titanic hit the sea water depth 12500 feet (about 3810 meters), the chain is not that long. Once the chain is shining, the chain in the chain is likely to be pulled out of the ship and sunk together into the seabed. If the chain attached to the ship was strong enough, the anchor would eventually hang in the deep sea and there was nothing to hold.

Paul F. Johnston, head of Ocean history, American Museum of History

--The Margaret Kraght of California State Glendora

Some mammals do. Some domesticated animals, especially dogs and horses, will become white with aging. The hair of some wild animals can also be turned white, in addition to being mature, white hair or a symbol of the power of some male species, such as a silver-back gorilla in a group of gorillas, or a white-crowned sea lion in a group of California sea lions.

--Marie Magnuson, senior Cat Animal keeper, National Zoo, USA