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
职业资格
Coasts mark the area where dry land meets oceans or other large bodies of water. They are one of the most active environments fo
Coasts mark the area where dry land meets oceans or other large bodies of water. They are one of the most active environments fo
admin
2015-05-17
67
问题
Coasts mark the area where dry land meets oceans or other large bodies of water. They are one of the most active environments found on Earth. The coastal landscape is ever-changing. It reflects the conflicting processes of erosion and deposition. It is a landscape that is affected by the interactions of the Earth, the Moon, and the Sun.
Coasts are among the most beautiful and inspiring landscapes on the planet, whether they are scenes of torrential storms or serene calm. Throughout recorded history, humans have sought to live on or near coasts. Although coasts account for only 10 percent of Earth’s land surface, they serve as home to two thirds of the world’ s human population.
Coasts and shore, coastline and shoreline, are commonly used in place of each other. Technically, they are different areas along a coastal landscape. The line that marks the boundary between water and land is the shoreline. It constantly
fluctuates
because of the regular action of waves and tides. The shore is that strip of ground bordering a body of water that is alternately covered or exposed by waves or tides. The boundaries of the shore are marked by the shoreline at its farthest seaward(low tide)and farthest landward(high tide).
Tide is the periodic rising and falling of water in oceans and other large bodies of water in response to the gravitational attraction of the Moon and the Sun upon Earth. Although the Sun is larger than the Moon, the Moon is closer to Earth and, therefore, its gravitational force is approximately 2.2 times greater. The gravitational pull of the Moon creates two types of tides: high and low. A tidal bulge occurs in the oceans on the side of Earth nearest the Moon, at the same time, a second tidal bulge occurs on the opposite side of Earth. This second bulge forms because the force of the Moon’s gravity pulls the solid body of Earth slightly away from the water on Earth’s far side. These bugles are high tides. The areas between the tidal bulges experience low tide.
As Earth rotates, the tides move over its surface. It takes approximately 24 hours and 50 minutes for a given point on Earth to make a complete cycle relative to the Moon, and two lunar tidal cycles occur during this time. Thus, the average time between high tides is 12 hours and 25 minutes. This is a generalized explanation of tides. They do not move evenly and predictably over Earth’s surface. Variations in the depth of the oceans and the distribution of landmasses combine with other factors to produce highly complex tidal behavior.
The coast and coastline begin where the shore ends at its high tide mark(farthest landward). The line between the coast and the shore at high tide is the coastline. The coast extends landward from the coastline to the first major change in terrain features, which may be miles inland. This could be a highland or a forest or some other type of terrain. Sometimes, the change between the coast and the adjacent terrain is not so distinct.
One lunar tidal cycle lasts______.
选项
A、24 hours and 50 minutes
B、12 hours and 25 minutes
C、a month
D、half a month
答案
B
解析
根据文章第五段的第二句“It takes approximately 24 hours and 50 minutes…and two lunartidal cycles occur during this time.”判断可知,一次月潮持续12小时25分钟。
转载请注明原文地址:https://kaotiyun.com/show/RvCv777K
本试题收录于:
英语学科知识与教学能力题库教师资格分类
0
英语学科知识与教学能力
教师资格
相关试题推荐
“共产党现时最主要的任务是有系统地、有计划地尽可能在广大区域中准备农民的总暴动,工人阶级应时刻领导并参加总暴动”。在中国共产党的历史上做出上述决定的会议是()。
Atahigherlevelofwriting,whichofthefollowingcognitive,skillsshouldNOTencouraged?
AccordingtoNoamChomsky,humanbeingsarebornwithaninnateabilitytoacquireandproducelanguageknownas______.
Modernscientistsdividetheprocessofdyingintotwostages—clinicalortemporarydeathandbiologicaldeath.Clinicaldeatho
Studentsarepresentedwithcontextualizedscenariosillustratingaspecificstructure.Thentheyareguidedtofindtheunderly
Plantsandanimalsthathavebeenstudiedcarefullyseemtohavebuilt-inclocks.Thesebiologicalclocks,astheyarecalled,u
Plantsandanimalsthathavebeenstudiedcarefullyseemtohavebuilt-inclocks.Thesebiologicalclocks,astheyarecalled,u
Itishardtopredicthowscienceisgoingtoturnout,andifitisreallygoodscience,itisimpossibletopredict.Iftheth
InasurveyconductedbyresearchfirmHarrisInteractive,71%ofAmericanssaidthatspendingextramoneyontravelduringthe
Ifateacherattemptstoimplementthebottom-upmodeltoteachlistening,he/sheislikelytopresent______.
随机试题
下列民事行为中,属于可撤销民事行为的有()。
下列关于腕关节摄影影像显示,错误的是
理想根管消毒药应具备的条件不包括
MHT临床应用基本原则()。
手动栏杆与天棚信号灯的互锁关系为只有手动栏杆打开时,天棚信号灯才由红色变为绿色()。
一类用地的具体评价要求是()。
某企业2007年和2008年的营业净利率分别为7%和8%,资产周转率分别为2和1.5,两年的资产负债率相同,与2007年相比,2008年的净资产收益率变动趋势为()。
依据记忆规律,如何组织复习?
中国通商银行(北京师范大学2002年中国近代史真题)
MaguetdeIcazaChristineKarman
最新回复
(
0
)