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
考研
Tides are created mainly by the pull of the moon on the earth. The moon’s pull causes water in the oceans to be a little deeper
Tides are created mainly by the pull of the moon on the earth. The moon’s pull causes water in the oceans to be a little deeper
admin
2015-07-15
48
问题
Tides are created mainly by the pull of the moon on the earth. The moon’s pull causes water in the oceans to be a little deeper at a point closest to the moon and also at a point farthest from the moon, on the opposite side of the earth. These two tidal "waves" follow the apparent movement of the moon around the earth and strike nearly every coast line at intervals of about twelve hours and twenty-five minutes. After reaching a high point, the water level goes down gradually for a little more than six hours and then begins to rise towards a new high point. Hence, most coast lines have two tides a day, and the tides occur fifty minutes later each day. Differences in the coast line and in channels in the ocean bottom may change the time that the tidal wave reaches different points along the same coast line.The difference in water level between high and low tide varies from day to dayaccording to the relative positions of the sun and the moon because the sun also exerts a pull on the earth, although it is only about half as strong as the pull of the moon. When the sun and the moon are pulling along the same line, the tides rise higher, and when they pull at right angles (直角) to one another, the tide is lower. The formation of the coast line and variations in the weather are additional factors which can affect the height of tides. Some sections of the coast are shaped in such a way as to cause much higher tides than in other areas. A strong wind blowing towards the shore may also cause tides to be higher.
If the pull of the sun equaled the pull of the moon, tides would______.
选项
A、sometimes be higher than they are now
B、be the same height they are now
C、no longer be affected by the wind
D、be of equal height all the time
答案
A
解析
文章第八句清楚地指出:“当太阳与月亮排在同一条线上时,潮水较高,当它们互成直角时,潮水较低。”
转载请注明原文地址:https://kaotiyun.com/show/zWQi777K
0
在职申硕(同等学力)英语
相关试题推荐
ItistheinteractionAbetweenpeople,Bratherthantheeventsthatoccurintheirlives,thatCarethemainfocusDofsocialps
Musiccomesinmanyforms;mostcountrieshaveastyleoftheirown.【C1】______theturnofthecenturywhenjazz(爵士乐)wasborn,Am
Forthispart,youareallowed30minutestowriteacompositionofnolessthan120wordsunderthetitleof"WhatWillMoneyB
Nothingissouncertainasthefashionmarketwhereonestyle______overanotherbeforebeingreplaced.
AmusselgripsahardsurfaceveryfirmlytoScientistsarenotthinkingofusingmusselstoproducethesupergluemainlybeca
TalksonclimatechangeresumedintheGermancityofBonnonJuly16tocombatglobalwarming.
Therewasnolightonthewayandforasecondshehesitated,unableto______thedimfigureawaitingher.
Aninternationaltreatysignedseveralyearsagobanstradeinplantsandanimalofendangeredspecies.
A:Hello,Mr.Smith.ThisisLarryJackson.IamafraidIwon’tbeabletoarriveontimeforthemeetinginyouroffice.B:____
Hehastroubleunderstandingthatotherpeoplejudgehimbyhissocialskillsandconduct.
随机试题
A.HoldthelineB.flightnumberC.askaquestionD.ToNewYorkE.MayIhaveyournameF.reconfirmmyseatG.pleasecheck
急性血源性化脓性骨髓炎早期诊断依据是
患者发热8天,胸部有少量皮疹,最可能是()
产褥病率主要原因是
行政机关根据公民、法人或者其他组织的申请,经依法审查,准予其从事特定活动的行政管理行为是()。
在经济发展中起最大作用的是()。
下图为某公园花展的规划图。其中,正方形面积的是玫瑰花展区,圆形面积的是郁金香花展区,且郁金香花展区比玫瑰花展区多占地450平方米。那么,水池占地()平方米。
根据商标法规定,下列属于商标侵权行为的有()。
下列方式中,利用主机应用系统漏洞进行攻击的是()。
Hemakeslittleofwalkingfiftykilometersinaday.
最新回复
(
0
)