首页
登录
职称英语
[originaltext]W: Dr. Smith. I need to ask you about something in Chapter 12. We
[originaltext]W: Dr. Smith. I need to ask you about something in Chapter 12. We
游客
2023-09-11
80
管理
问题
W: 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, because, 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 l thought there weren’t any waves or currents that deep in the ocean.
M: That’s not exactly true. 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 wasn’t in the book but the term came up in class. Do you remember what it means?
W: 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?
M: Good!
W: Umh, but I thought that only happened in rivers.
M: Well, yes. This does occur in rivers, but we see turbidity currents deep in the ocean as well.
W: But how do they get started there?
M: 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 it 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、It has different color.
B、It has air inside.
C、Sediment gets stirred up and mixes with water.
D、It’s not mentioned in the conversation.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3004098.html
相关试题推荐
[originaltext]M:Hello,Jenny.Whatareyoudoinghere?W:Hello,Mark!Thisis
[originaltext]M:Icouldn’tputupwithmywifeanylonger.Idon’tknowwhysh
[originaltext]M:Icouldn’tputupwithmywifeanylonger.Idon’tknowwhysh
[originaltext]M:Icouldn’tputupwithmywifeanylonger.Idon’tknowwhysh
[originaltext]M:Icouldn’tputupwithmywifeanylonger.Idon’tknowwhysh
[originaltext]M:Icouldn’tputupwithmywifeanylonger.Idon’tknowwhysh
[originaltext]Faces,likefingerprints,areunique.Didyoueverwonderhow
[originaltext]Faces,likefingerprints,areunique.Didyoueverwonderhow
[originaltext]InBritainthereare11nationaldailynewspapersandmostpe
[originaltext]InBritainthereare11nationaldailynewspapersandmostpe
随机试题
Menhavetraveledever【C1】______theyfirstappearedontheearth.【C2】_____
TheChinesehaveusedamethodcalledacupuncturetohelpperformoperations
根据以下材料,回答15-17题 武百官陈时政利害,何以武吏不涉学,乃委周草状。
沥青路面透层施工中,透层油洒布后待充分渗透,一般不少于()后才能摊铺上层。
患者,女性,32岁,上消化道出血入院2天,已行三腔管止血,今晨护士接班时,注意到
男性,34岁,因失血性休克正在输液。现测得其CVP4.8cmH<sub>2</s
在室外构架上工作,则应在工作地点邻近带电部分的横梁上,悬挂()的标示牌。
2012年全国国道网车流量较大的地区主要集中在北京、天津、上海、江苏、浙江、广东
上海期货交易所的铜、铝、锌等期货报价已经为国家所认可,成为资源定价的依据,这充分
以下关于公安机关侦查程序的说法,错误的有哪些:A.除非遇有紧急情况,公安机关拘传
最新回复
(
0
)