The four parts of a comet are the nucleus, the coma, the dust tail, and the gas tail. The nucleus of a comet is the main, solid body of the comet...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer ...
【题文】Comets(彗星) are parts of our solar system. Like the planets, they go around the sun.But comets are not made of solid rocks like planets. A comet is a ball of dust, stones, and ice. Many people call comets dirty snowballs.The “snowball” may be only a few miles across. ...
C Comets (彗星) are parts of our solar system. Like the planets, they go around the sun. A comet is a ball of dust(灰尘) , stones, and ice. Many people call comets dirty snowballs.The "snowball" may be only a few kilometres across. But when the sun heats the “snowball", much ...
1.Young persons considered as a group; youth:entertainment for the young. 2.Offspring; brood:a lioness with her young. Idiom: with young Pregnant. Used of an animal. [Middle Englishyong, from Old Englishgeong; seeyeu-inIndo-European roots.] ...
head - a rounded compact mass; "the head of a comet" object, physical object - a tangible and visible entity; an entity that can cast a shadow; "it was full of rackets, balls and other objects" 18. head - the foam or froth that accumulates at the top when you pour an effervescent...
When the comet gets even closer to the Sun, one of its most spectacular parts begins to form the tail. Actually, there are two kinds of tails the dust tail and the ion tail. The dust tail is produced by the light from the Sun reflecting off the dust particles in the coma. A photon...
And for years, the two were seen asseparate, almost coincidental disasters.Chicago's fire was long blamed—falsely—on an Irish-immigrant family's cow kicking over a lantern.Some people thought the Peshtigo Fire started when pieces of a comet landed in the forest, which has neverbeen proven....
2.Comets(彗星) are parts of our solar system(太阳系).Like the planets,they go around the sun.But comets are not made of solid rock like planets. A comet is a ball of dust,stones,and ice.Many people call comets dirty snowballs.The"snowball"may be only a few miles across.But when t...
b.The long stream of gas and dust that is illuminated and directed away from the head of a comet when it is close to the sun. c.A braid of hair; a pigtail. d.A train of followers; a retinue. 4.Something that follows something else or takes the last place: ...
head - a rounded compact mass; "the head of a comet" object, physical object - a tangible and visible entity; an entity that can cast a shadow; "it was full of rackets, balls and other objects" 18. head - the foam or froth that accumulates at the top when you pour an effervescent...