[amp_mcq option1=”initial phase” option2=”storm sudden commencement phase” option3=”main phase” option4=”None of the above” correct=”option3″]<\/p>\n
The correct answer is: C. main phase<\/strong><\/p>\n The magnetosphere is the region of space around Earth that is dominated by Earth’s magnetic field. The magnetosphere protects Earth from harmful radiation from the sun and other sources.<\/p>\n Magnetic storms are disturbances in the magnetosphere that can cause problems with satellites, power grids, and other technology. Magnetic storms are caused by changes in the sun’s magnetic field.<\/p>\n The main phase of a magnetic storm is the period when the magnetosphere is most unstable. During the main phase, the magnetosphere can expand and contract, and the magnetic field can become very disturbed.<\/p>\n The initial phase of a magnetic storm is the period when the magnetosphere begins to respond to changes in the sun’s magnetic field. During the initial phase, the magnetosphere may expand or contract slightly, and the magnetic field may become slightly disturbed.<\/p>\n The storm sudden commencement phase is the period when the magnetosphere is suddenly disturbed by a change in the sun’s magnetic field. During the storm sudden commencement phase, the magnetosphere can expand rapidly, and the magnetic field can become very disturbed.<\/p>\n None of the above is not the correct answer because it does not describe a period during which the magnetosphere becomes unstable.<\/p>\n","protected":false},"excerpt":{"rendered":" [amp_mcq option1=”initial phase” option2=”storm sudden commencement phase” option3=”main phase” option4=”None of the above” correct=”option3″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[958],"tags":[],"class_list":["post-48825","post","type-post","status-publish","format-standard","hentry","category-world-geography","no-featured-image-padding"],"yoast_head":"\n