首页
登录
职称英语
As viewed from space, the Earth’s distinguishing characteristics are its blu
As viewed from space, the Earth’s distinguishing characteristics are its blu
游客
2024-01-02
45
管理
问题
As viewed from space, the Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million km (93 million miles), the Earth is the third planet from the Sun and the fifth largest planet in the solar system. Its rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled with the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Most meteors burn up in the Earth’s atmosphere before they can strike the surface. The planet’s active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it was formed. The Earth has a single natural satellite -- the Moon. [br] Which of the following helps to create the Earth’s magnetic fields?
选项
A、Its blue waters.
B、Its nitrogen atmosphere.
C、Its molten metal core.
D、The Moon.
答案
C
解析
见文中第四句:Its rapid spin and molten nickel-iron core give rise to an extensive magnetic field which,…地球迅速的自转以及其熔融的镍铁地核引发了广泛的磁场……由此可知地球的磁场是借助于其自身的自转及其熔融的地核引发的,因此答案为C。
转载请注明原文地址:https://tihaiku.com/zcyy/3326333.html
相关试题推荐
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Asviewedfromspace,theEarth’sdistinguishingcharacteristicsareitsblu
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
Becauseearlymanviewedillnessasdivinepunishmentandhealingaspurifica
随机试题
Friendsplayanimportantpartinourlives,andalthoughwemaymakethefa
EarthquakeCanScientistsPredictKillerEarthquakes?
为达到审美要求,不可采用以下哪种措施来调整缺牙间隙过宽()A.扩大舌
D
胆汁酸的唯一前体是A、甘油三酯B、胆固醇C、胆固醇酯D、脂蛋白E、糖蛋白
2008的2008次方+2009的2009次方的个位数是()。A.3 B.
代理人在代理权限内,以被代理人的名义实施民事法律行为;被代理人对代理人的代理行为
下列关于不利于创伤修复的因素中,错误的是A.伤口感染 B.局部存留异物 C.
某建设单位针对煤炭能源紧缺、经济效益可观的现状,将一储备煤炭资源进行开发,在尚
根据《房屋建筑与装饰工程工程量计算规范》(GB50854-2013),以下工程量
最新回复
(
0
)