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
38
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 .
The strange ice patterns on Europa are formed as a result of a sudden collapse of the underground water pool.
选项
A Right
B Wrong
C Not mentioned
答案
B
解析
根据第三段最后一句:…they arise from the mixing of vast underground stores of liquid water with icy material near the surface.而不是a sudden collapse of the underground water pool.
转载请注明原文地址:https://ti.zuoweng.com/ti/ZllQKKKQ
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
己知 其还原态还原性由强到弱的顺序为()。
营养健康教育的技巧有
关于支付要求和贷后管理要求,下列说法正确的是()
甲工厂借用乙公司的一套电子设备,在使用的过程中不慎将某部件弄坏,于是甲工厂提出买
下列现象中能量是机械能转化的是()。A.水电站发电时,水轮机被水流冲击转动,带动发电机发电B.利用地热发电C.化学上的电镀过程D.植物生长过程
2012年度参加统计的全国工程招标代理机构共5522个,比上年增长8%。按照资格等级划分,甲级机构1336个,比上年增长6.54%;乙级机构2858个,比...
在缺乏甲状腺激素的情况下,甲状腺本身可适应碘的供应变化调节甲状腺激素的合成、释放,这种调节方式称为A.神经调节B.体液调节C.自身调节D.前馈调节E.反
依据《中华人民共和国土地管理法》,基本农田保护区以()为单位进行划区定界,由县级人民政府土地行政主管部门会同同级农业行政主管部门组织实施。A:乡(镇)B:地块
职业病病人()享受国家规定的职业病待遇。A:可以B:免费C:依法D:在发病期间
关于犯罪数额的计算,下列哪一选项是正确的?A:甲15周岁时携带凶器抢夺他人财物价值3万元;17周岁时抢劫他人财物价值2万元。甲的犯罪数额是5万元B:乙收受贿赂