Indeed, the magnetosphere is formed by the interaction of the solar wind, moving radially outwards from the Sun at supersonic speeds, with the Earth's magnetic field (see also eae 323). Geomagnetic observations
The Earth's magnetic field _. A. is evenly distributed all over the Earth B. is stronger at the poles than at the equator C. has no influence on the atmosphere D. only E. xists above the surface 相关知识点: 试题来源: 解析 B。解析:地球磁场在两极比在赤道更强。地球磁场并不是均匀...
magnetic activitymagnetic stormsspace weathercompassnavigationThe origin of the Earth''s magnetic field is one of the oldest problems in physics. The fact that the field is now known to have reversed its polarity many times in the past has given added interest to the problem. This paper ...
Magnetic stormMagnetosphereMagnetohydrodynamic (MHD) wavesSolar windGeomagnetic micropulsations are short period (usually of the order of seconds or minutes) fluctuations of the Earth's magnetic field. They are transitory variations of small amplitude (usually less than one part in 10 4 of the Eart...
(C)Scientists know that the internal forces that generate Earth's magnetic field(磁场) can change and that the strength of the field swings over time. This can lead to gradual shifts in the intensity and location of Earth's magnetic north and south poles and even reversals where Earth's ma...
ICE ages and reversals of the Earth's magnetic field are two widely different geophysical phenomena; but they may be casually linked by the following mechanism. The moment of inertia of the Earth will be changed by variations in size of polar ice sheets and the resulting redistribution of water...
(C)Scientists know that the internal forces that generate Earth's magnetic field(磁场) can change and that the strength of the field swings over time. This can lead to gradual shifts in the intensity and location of Earth's magnetic north and south poles and even reversals where Earth's ma...
The intensity of the geomagnetic field in Central Europe during the Permo-Carboniferous, Permian and Plio-Pleistocene did not differ appreciably from the present day intensity.. 1967 Nature Publishing Groupdoi:10.1038/215697a0KRSMIROSLAVNatureK2. Krs, M.: Nature 215 (1967) 697–699. ADS...
A. and B. but C. or D. so 相关知识点: 试题来源: 解析 D。“The earth has a magnetic field”(地球有磁场),“it can protect us from harmful solar radiation”(它可以保护我们免受有害的太阳辐射),前后为因果关系,所以用 so。反馈 收藏 ...
The magnetic field amplifies the iron of mantle and a kernel of the Earth. As a result of action of a radial electric field the electrons will flow from the center of a kernel in a layer of an electric charge. The central part of a kernel represents the field with a positive electric ...