首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Europa’s Watery Underworld Europa,one of Jupiter’s 63 known moons, looks br...
Europa’s Watery Underworld Europa,one of Jupiter’s 63 known moons, looks br...
admin
2020-12-24
47
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,cold shell,Europa probably hides giant pools of liquid water. Where scientists find liquid water, they hope to find life as we".
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 ties 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 US GreatLakes.
Pictures of Europa,which is slightly smaller than Earth’s moon,clearly show a tangled (错综复杂的),icy mishmash (混杂物)of lines and cracks known as “chaos terrains (混乱 地形).” 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 w她r 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 scientist at the University of Texas at Austin who worked on the study,told Science News. “But even if they didn’t, they My that Europa is doing something interesting and active right now
Schmidt 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 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 (混乱的)ice sculptures.
“Fracturing catastrophically (灾难性地)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 syrface Mend with the deep bodies of water. That mixture may create an environment that supports .
Europa is the most recently discovered one among Jupiter’s 63 known moons.
选项
A Right
B Wrong
C Not mentioned
答案
C
解析
全文没有提到 Europa is the most recently discovered one...
转载请注明原文地址:https://ti.zuoweng.com/ti/gllQKKKQ
相关试题推荐
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
Europa’sWateryUnderworld Europa,oneofJupiter’s63knownmoons,looksbr...
随机试题
关于超前支护结构施工技术说法错误的是()
一般来说,其他条件不变时,销售利润率越高越好;但当其他条件可变时,销售利润率低也
某工程单代号搭接网络计划中工B、D、E之间的搭接关系和时间参数如下图所示,工作D
()是矫正社会工作的哲学基础。
根据规定,抵押权人享有的权利有( )。
原发性胆汁性肝硬化的标志抗体是
业主的维修养护事项如果确需临时占用、挖掘道路、场地的,应当征得()的同意。A:当地政府B:建设单位C:业主大会D:业主委员会E:物业服务企业
依据《煤矿建设项目安全设施监察规定》,煤矿建设项目在竣工完成后,应当在正式投入生产或使用前进行联合试运转。联合试运转的时间一般为()。A.1至3个月B.
只有现值没有终值的年金是()。A.永续年金B.现付年金C.后付年金D.延期年金
位于某市区乙企业(增值税一般纳税人),2014年9月1日购置一座仓库,购置时取得的发票注明价款500万元,当时缴纳了3%的契税并取得完税凭证。2020年1...