What is a meteorite made up of?Minerals from Space:The Earth's crust is relatively poor in heavy metals, due to the separation that occurred when the Earth was still molten. Some of the largest mineral deposits on the Earth are the result of asteroid impacts millions of years ago, long ...
meteorite指的是从太空中掉入地球的铁或岩石. 它在进入地球的大气层时不会完全燃烧掉.而meteor则是由彗星的小碎片组成的. 它在进入地球大气层时会完全燃烧掉. meteor也被成为流星.
is a piece of iron or rock which falls on earth from space.Meteorites are much bigger in size than a meteor .There are different sizes and shapes.The largest meteorite ever discovered was in 1920 in South Africa.Its weighed about 50 tons.Meteorites do not burn completely when th...
While is it possible that they may hit something upon landing and that could create a fire it is not because the meteorite itself landed hot. Do meteorites contain materials not found on the Earth? Meteorites are made up of the same elements that all Earth materials are made of. There are...
The meteorite is made up almost entirely of pyroxene and plagioclase, with accessory amounts of nickel-iron, troilite, chromite, ilmenite and tridymite. The pyroxene-plagioclase achondrites can be divided into two groups on the basis of their pyroxenes—the howardites with dominant orthopyroxene ...
Mr.Pettifer is glad."When you think about it coming from so far away,it really is something strange." 1.The meteorite was ___ Mr.Pettifer when it fell down. A.close to B.far from C.hitting D.go up 2.The meteorite was already ___ years old. A.40,000,000,000 B.40,000,00...
C. What proportion of iron and stone it contains D. How large it is when it enters the Earth's atmosphere 你的答案: 正确答案:D 题目解析: 后才能查看题目解析,还没有账号?马上注册 本文生词0 显示文中生词 登录后才能收藏生词哦,现在登录注册> ...
根据第二段中I looked up and I saw the tops of the trees coming and going,"he said,"I didn't know what it was."Meteorites are small things from the small planets in space.… 可知Pettiffer发现树枝摇晃, 是因为陨石造成 的。 4.推理判断题。 由"but only very few are found“可推断出,...
The Interior Ministry said about 1,200 people had been injured, at least 200 of them were children, and most from broken pieces of glass.【小题1】What do we learn about the meteorite from the passage? A.It is a very huge ball made of iron. B.It quickly broke apart on the ground...
Because ordinary chondrites represent 80% of the meteorites that fall to earth, and because ordinary chondrites contain 60-80% chondrules, it follows that most of the meteoritic material that falls on earth (excluding dust) is made up of chondrules. WikiMatrix 你跟你的 金发 妞 发现 陨石 ...