首页
登录
职称英语
Periodic realignment of the Earth’s magnetic field occurs two ways: t
Periodic realignment of the Earth’s magnetic field occurs two ways: t
游客
2025-02-22
76
管理
问题
Periodic realignment of the Earth’s magnetic field occurs two ways: the
first, "field regeneration", or the creation of new magnetic fields from the
ambient geomagnetic field, takes place because magnetic field lines are trapped
Line in effective electrical conductors. The field is trapped in molten iron which
(5) moves in response to the forces imposed upon it and as the core moves, the field
lines are stretched and twisted, creating a new magnetic field. The second
process is the diffusion of the magnetic fields: in the same way that a drop of
dye will soon diffuse throughout a swimming pool, a concentration of magnetic
field lines diffuses throughout the planet’s outer core. On the large scale of
(10) stars and planets, the field lines are caught up in the fluid motion and distorted,
generating a new magnetic field before diffusing away. This rarer type of field
reversal is likely caused by unexplained larger changes in the flow in the outer
core, though scientists have suggested such fluctuations may simply be extreme
examples of fluctuations in the dynamo processes-an El Nino in the weather of
(15) the outer core. [br] The author employs all of the following in the passage EXCEPT
选项
A、An illustrative analogy
B、An admission of uncertainty
C、A comparison of processes
D、The coining of a new term
E、A counter-example
答案
E
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3967874.html
相关试题推荐
Acarmanufacturerperiodicallydiscountscertaincarmodelstoitsdealerstoc
X:Whenararebutseriousindustrialaccidentoccurs,peoplerespondbybelievi
Dostrongelectriccurrents,bymeansoftheelectromagneticfieldsthataccompa
FERROUS:A、magneticB、rustyC、withnoironD、hydratedE、non-reactiveC
PeriodicrealignmentoftheEarth’smagneticfieldoccurstwoways:t
PeriodicrealignmentoftheEarth’smagneticfieldoccurstwoways:t
FERROUS:A、magneticB、rustyC、withnoironD、hydratedE、non-reactiveC
The(i)______ofhomingpigeonstosenseEarth’smagneticfieldmayserveas(ii)
Sleepactuallyoccurs(i)______thoughonemayreceivecluessignalingits(ii)__
TheMagneticAttractionofPhysicsIt’samazingwhatyouca
随机试题
Thisstoryisnotreal,itisonly______.A、imaginableB、imaginativeC、imaginary
[originaltext]W:Hey,Tom.Gotasecond?M:Sure,what’sup?W:(6-1)Thecompany
HomelandSecuritySecretaryJanetNapolitanowarnedthatwejustcan’twin,
[originaltext]AbeetleinvasionintheUnitedStateshaskilledatleasttw
下列关于建设工程索赔的说法中,正确的有()。A、索赔具有双向性 B、索赔是
根据《工伤保险条例》,应当参加工伤保险而未参加的用人单位,一旦职工发生工伤,其工
对该求助者较适合的心理测验包括( )。A.SAS B.LES C.SDS
(2017年真题)关于普通混凝土路面胀缝施工技术要求,错误的是()。A.胀缝
下列情况中,不能行胃癌根治手术的是A.子宫直肠窝转移 B.癌组织浸润胰尾部时
关于环境保护税应税污染物计税依据的确定方法,正确的是()A.应税大气污染物按照大
最新回复
(
0
)