1) the source of all magnetism is  ? a) piece of iron b) aligned atoms  c) moving electric charges 2) An iron rod becomes magnetic when? a) the electron spins are in the same time  b) ions and electrons are separate c) both of these 3) Magnetic field lines about a current carrying wire? a) circle the wire b) extend radially c) parallel to the wire 4)  Which pole of a compass needle points north? a) North pole  b) south pole  c) depends on location 5) The cosmic ray intensity striking the earth's surface is highest near the? a) equator b) poles c) mid latitudes

Physical Science

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