Page 29 - Curriculum Visions Dynamic Book
P. 29

                                                                                                                                                                                                                                         Pictures of sunspots. They are constantly changing, so that no two pictures of the Sun are ever the same.
magnetic field The region of influence of a magnetic body.
penumbra The part of a sunspot surrounding the umbra.
umbra The darkest region in the center of a sunspot.
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