Comets have a tail. Comets actually have three distinct components: the nucleus, consisting of rock and ice; the coma, consisting of gases and dust; and the tail, which is formed when gases and dust spread out from the nucleus or coma.M: Okay. A comet has a nucleus, a coma, and a...
The comet is a celestial body. It has a long tail. What is the adjective for “comet”? A. comety B. cometal C. cometic D. cometish 相关知识点: 试题来源: 解析 C。“cometic”是形容词,表示“彗星的”;选项 A、B、D 都是错误的构词。
Although the specific mass of comets is not often calculated, knowing their composition helps to estimate their mass and density. Comets are primarily made of ice, which has a mass of one gram per cubic centimeter. The average comet has a diameter of 10km and an average mass of 5×1014kg...
Explain the difference between the tail of a meteor and the tail of a comet. What are they composed of? How are they created? How do we see them? It is said that a gas fills all the space available to it. Then, why doesn't the atmosphere go off into space?
What is a Comet\"s Tail? N O bride was ever covered by such a transparent gauzy veil as that which trails behind a comet as it comes to do obeisance to the sun, or as it backs like a courtier out of the solar presence, keeping its train behind it. It has frequen... Ranyard,...
In the field of nanoscience, much of the early puzzle-solving begins in a university research laboratory. Scientific discovery is often like trying to catch the tail of a comet, so it is ironic that a nanoscience discovery called aerogel- sometimes called "solid smoke" - allowed NASA to ...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
A phenomenon where we can see a long tail in the sky. What is it? A. Comet B. Meteor C. Asteroid 相关知识点: 试题来源: 解析 A。这是彗星现象,彗星有长尾巴。选项 B 流星瞬间出现一道条纹。选项 C 小行星通常没有长尾巴。反馈 收藏 ...
Comets usually have two tails, which point in different directions. The dust in the comet is responsible for one tail. This tail, also called the dust tail, tends to be broad and curved. The gasses in the comet make the other tail, called the plasma or the ion tail. This tail is thi...
Comet and asteroid perihelions The other "peris" Additional resources: Bibliography: The term "perihelion" describes the point in an astronomical body's orbit where it is nearest to the sun. Derived from the Greek words peri (around) and helios (sun), the word reflects its meaning. In...