The time cycle of this variation Id 960 years. Eleven-year Sunspot Cycle: Once in every eleven year the earth faces the sunspot which is a region of strong magnetic field. Thus the magnetic activity of the earth is very much influenced during this variation. Daily and Annual Variation: The...
The magnetic field of the Earth has global meaning for a life on the Earth. The world geophysical science explains: - occurrence of a magnetic field of the Earth it is transformation of kinetic energy of movements of the fused iron in the liquid core of Earth - into the magnetic energy; ...
The magnetic field of the Earth has global meaning for a life on the Earth. The world geophysical science explains: - occurrence of a magnetic field of the Earth it is transformation of kinetic energy of movements of the fused iron in the liquid core of Earth - into the magnetic energy; ...
Earth’s Magnetic Field http://nsdl BUT…..Magnetic North is NOT at the North Pole http://nsdl AND…the Magnetic Field Reverses • Field reverses ~1 time every 200,000 years on average. • 400 times in last 330 million years. ...
(redirected fromEarth's magnetic field) Encyclopedia Wikipedia ge·o·mag·ne·tism (jē′ō-măg′nĭ-tĭz′əm) n. 1.The magnetism of the earth. 2.The study of the earth's magnetism. ge′o·mag·net′ic(-nĕt′ĭk)adj. ...
根据第一段“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.(科学家们知道,产生地球磁场的内力是可以改变的,而且磁场的强度会随着时间而变化)”可知,产生地球磁场的内力是可以改变的,而且磁场的强度会随着...
Earth’s Magnetic Field, Atmosphere and Geology[地球磁场,大气和地质](PPT-97),文档标题《Earth’s Magnetic Field, Atmosphere and Geology[地球..
A. Magnetic field reversal直接指出磁场逆转现象,与题干中“periodic reversal of the Earth’s magnetic field”完全对应,是问题核心内容的直接描述,因此为正确选项。B. 岩浆的形成(The formation of magma)涉及地球内部物质活动,但与磁场周期性逆转无直接关联。C. 洋中脊的位置(The location of mid-ocean ridges...
www.q766.com|基于7个网页 2. 地球磁场 ...ova)增多、大气电离层(ionosphere)和地球磁场(Magnetic field of the earth)的变化。 www.xuancheng.org|基于 1 个网页 释义: 全部,地球的磁场,地球磁场
The meaning of MAGNETIC FIELD is the portion of space near a magnetic body or a current-carrying body in which the magnetic forces due to the body or current can be detected. How to use magnetic field in a sentence.