Compléter SCIENCE PROJECT Version en ligne Fill in the blanks par Mm Min han 1 MagneticEquator isoclinicLines secularChange MagneticMeridian deviation hardIron MagneticVariation Dip 1 . is an angle between true north and magnetic meridian at that pole . 2 . is a direction assumed by a compass needle free to move only on a horizontal plane , under the influence of Earth's field alone . 3 . The amount in degrees , the compass needle is deflected to . 4 . A slow and fairly regular change of variation which goes on persistently over a long period is . 5 . is the belt between the magnetic poles where the earth's magnetic field is horizontal . 6 . Lines drawn through places of equal dip is know as . 7 . is the angle a freely suspended magnets makes the horizontal . 8 . It is difficult to magnetize , but once magnetize , it retains its poles more or less permanently is called .
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