首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Europa’s Watery Underworld Europa, one of Jupiter’s 63 known moons, looks bright and icy on the surface. But appearances can
Europa’s Watery Underworld Europa, one of Jupiter’s 63 known moons, looks bright and icy on the surface. But appearances can
admin
2013-05-28
36
问题
Europa’s Watery Underworld
Europa, one of Jupiter’s 63 known moons, looks bright and icy on the surface. But appearances can be deceiving: Miles within its cracked, frigid shell, Europa probably hides giant pools of liquid water. Where scientists find liquid water, they hope to find life as well.
Since we can’t go diving into Europa’s depths just yet, scientists instead have to investigate the moon’s surface for clues to what lies beneath. In a new study, scientists investigated one group of strange ice patterns on Europa and concluded that the formations mark the top of an underground pool that holds as much water as the U. S. Great Lakes.
Pictures of Europa, which is slightly smaller than Earth’s moon, clearly show a tangled, icy mishmash of lines and cracks known as "chaos terrains. " These chaotic places cover more than half of Europa. For more than 10 years, scientists have wondered what causes the formations. The new study suggests that they arise from the mixing of vast underground stores of liquid water with icy material near the surface.
For scientists who suspect that Europa also may be hiding life beneath its icy surface, the news about the new lake is exciting.
"It would be great if these lakes harbored life," Britney Schmidt, a planetary scientist who worked on the study, told Science News. "But even if they didn’t, they say that Europa is doing something interesting and active right now. "
Schmidt, a scientist at the University of Texas at Austin, and her colleagues wanted to know how chaos terrains form. Since they couldn’t rocket to Europa to see for themselves, they searched for similar formations here on Earth. They studied collapsed ice shelves in Antarctica and icy caps on volcanoes in Iceland. Those features on Earth formed when liquid water mixed with ice. The scientists now suspect something similar might be happening on Europa: that as water and ice of different temperatures mingle and shift, the surface fractures. This would explain the jumbled ice sculptures.
"Fracturing catastrophically disrupts the ice in the same way that it causes ice shelves to collapse on Earth," Schmidt told Science News. She and her team found that the process could be causing chaos terrains to form quickly on Europa.
The new study suggests that on this moon, elements such as oxygen from the surface blend with the deep bodies of water. That mixture may create an environment that supports life.(2012年)
Schmidt and her colleagues are the first group of scientists discovering Europa.
选项
A、Right
B、Wrong
C、Not mention
答案
C
解析
题干:Sehmidt和她的同事是发现欧罗巴的首批科学家。根据关键词Schmidt and her colleagues定位到第六段首句“Sehmidt,a scientist at the University of Texas at Austin,and her colleagues wanted to know how chaos terrains form.”文中并未提及Schmidt和她的同事是否首批发现欧罗巴的科学家,故答案为C。
转载请注明原文地址:https://jikaoti.com/ti/VjJsFFFM
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
AAttractionsofTravellingBLanguageProblemWhenEatingOutCRevolutionCausedbyJetsDHowTravellers’ConcernsAreMe
AnimalsintheDesertSomedesertanimalscansurvivetheverystrongsummerheatanddrynessbecausetheyhaveveryunusualcha
TransportationuseatoBeMuchSlowerthanItIsNowFormanyyearsintiledesert,camelsuse
AUndeniableMiffsAchievementsBRewardsFollowingtheUSFinancialInjectionCMir’sProblemYearDMirRegardedasa
AUndeniableMiffsAchievementsBRewardsFollowingtheUSFinancialInjectionCMir’sProblemYearDMirRegardedasa
AUndeniableMiffsAchievementsBRewardsFollowingtheUSFinancialInjectionCMir’sProblemYearDMirRegardedasa
EconomicReforminChinaMoreUSsinologistshaveexpressedconfidenceinChina’seconomicreformandtheprospectsforChina’s
ThetemperatureatthecenteroftheSunismuchhigherthanitisatthesurface.Thecoronaraysbecomeweakandinvisiblewh
Europa’sWateryUnderworldEuropa,oneofJupiter’s63knownmoons,looksbrightandicyonthesurface.Butappearancescan
随机试题
患者,男性,36岁。车祸2小时右大腿血流不止、畸形,查体:心率128次/分,血压67/48mmHg,右大腿有一个长约16cm的伤口,股骨断端外露,伤口污染较重。下列对伤口的处理不正确的是
A.心B.肝C.脾D.肺E.肾
财务分析方法中,采用()可以分析变化的原因和性质,并预测企业未来的发展前景。
各种会计核算形式下,明细账的登记依据有()。
下列不属于短期借款包括的主要内容的是()。
文件的使用权限包括完全控制、允许写入、允许读取、允许运行、允许删除等,其中完全控制、允许写入、允许读取、允许运行中都允许用户进行的操作是()。
如果高水平学生在测验项目上能得高分,而低水平学生只能得低分,那么就说明该测验的()高。
(2016吉林)已知赵先生的年龄是钱先生年龄的2倍,钱先生比孙先生小7岁,三位先生的年龄之和是小于70的素数,且素数的各位数字之和为13,那么,赵、钱、孙三位先生的年龄分别为:
在考生文件夹中有一个工程文件sjt5.vbp。窗体外观如图所示。运行程序,单击“读数据”按钮,读入文件中的数据到字符串变量中并显示在Label2标签中。单击“排序”命令按钮时,对读入的数据从小到大进行排序,并将排序结果在窗体的Label4控件中显示。
Questions1-4Thetexthas5paragraphs(A-E).Whichparagraphcontainseachofthefollowingpiecesofinformation?*
最新回复
(
0
)