首页
登录
职称英语
[originaltext]They are discussing a reading assignment about the ocean floor.A
[originaltext]They are discussing a reading assignment about the ocean floor.A
游客
2024-01-05
6
管理
问题
They are discussing a reading assignment about the ocean floor.
A: Dr. Smith. I need to ask you about something in Chapter 12. Well it talks about erosion and the deposit of sediment on the deep sea floor, but I’m confused, cause, well, for that to happen there would have to be some kind of force down there moving the mud or sand or whatever, right. But I thought there weren’t any waves or currents that deep in the ocean.
B: That’s not exactly correct. It’s true that deep down on the ocean floor we won’t have the same kinds of currents we find in shallower parts. But we do find what we call turbidity currents. This wasnt in the book but the term came up in class. Do you remember what itmeans?
A: Umh, turbidity currents? Oh, yeah! Isn’t that when sediment like sand or mud gets stirred up and mixes with water And then this mixer kind of flows through the water around it, right?
B: Good!
A: Umh, but I thought that only happened in rivers.
B: Well, yes. This does occur in rivers, but we see turbidity currents deep in the ocean as well.
A: But how do they get started there?
B: Earthquakes mostly, when an earthquake occurs under water, it throws up tremendous amounts of mud or sand that becomes suspended in a layer of water near the bottom of the ocean. This layer is so much denser and heavier than other ocean water that if flows right down the slopes o f the ocean floor and gains more and more speed as it moves along. Then it’s just like the winds blowing across the desert picking up sand from one place and moving it along and finally dropping it somewhere else.
选项
A、The strength of ocean currents.
B、The movement of sediment deep in the ocean.
C、The best methods for studying deep ocean processes.
D、A new way of measuring the depth of the ocean.
答案
B
解析
What is the main topic of the discussion?
转载请注明原文地址:https://www.tihaiku.com/zcyy/3335503.html
相关试题推荐
WhatdoesthecharityForwardthinkingdo?[br][originaltext]Youwillhearar
WhatisChloeconcernedabout?[br][originaltext]Youwillheartwopeoplecall
WhatisChloeconcernedabout?[br][originaltext]Youwillheartwopeoplecall
WhatisChloeconcernedabout?[originaltext]YouwillheartwopeoplecalledChl
Choosethecorrectletter,A,BorC.[br]Thisassignmentisimportantbecause
Choosethecorrectletter,A,BorC.[br]Theproposalwill[originaltext]TUTOR
Choosethecorrectletter,A,BorC.[br]Thehostfamilieswill[originaltext
Choosethecorrectletter,A,BorC.ReflectiveJournalAssignment[br]Whatis
Choosethecorrectletter,A,BorC.ReflectiveJournalAssignment[br]Theman
Choosethecorrectletter,A,BorC.ReflectiveJournalAssignment[br]Thewom
随机试题
cleaningupThecurrentrowoverclimatechange
HenryIIIdidn’tknowmuchaboutbiology.Hewentthroughsixwivesbackin
我国就发明或实用新型的新颖性审查时,采用的地域标准为()A.本国新颖性标准
水泥到达初凝或终凝时间时应立即重复测一次,当两次结论相同时才能定为到达初凝或终凝
某金融专业刚毕业的男性客户到银行办理业务,他以自己对某些产品风险的理解不够为理由
关于造成患者轻度残疾、器官组织损伤导致一般功能障碍的医疗事故,依据医疗事故对患者
有用性是指物品能够满足人们的某种需要,俗话说“有用”,经济学上称为有使用价值,如
丙米嗪抗抑郁的作用机制是A.可能因抑制突触前膜NA释放 B.可能因抑制突触前膜
在生产过程中,人们经常利用安全监控系统监测与安全有关的状态参数,发现故障、异常,
(2019年真题)建设工程组织流水施工时,用来表述流水施工在施工工艺方面进展状态
最新回复
(
0
)