The aurora borealis or "northern lights" is produced when electrically charged particles emitted by the sun spiral downward toward the earth's north pole. They are guided in that direction by the earth's magnetic field because
A)	moving charged particles experience forces when they pass through a magnetic field.
B)	positively charged particles are attracted toward north magnetic poles.
C)	positively charged particles are attracted toward south magnetic poles.
D)	positively charged particles are repelled by both north and south magnetic poles.
Answer:A
The aurora borealis or "northern lights" is produced when electrically charged particles emitted by the sun spiral downward toward the earth's north pole. They are guided in that direction by the earth's magnetic field because
A)	moving charged particles experience forces when they pass through a magnetic field. B)	positively charged particles are attracted toward north magnetic poles. C)	positively charged particles are attracted toward south magnetic poles. D)	positively charged particles are repelled by both north and south magnetic poles.