if the milky way galaxy is the reference frame, how does the earth move?
a. around the sun
b. towards the center of the milky way galaxy
c. away from the center of the milky way galaxy
d. around the center of the milky way (just as the sun does)

If y gets smaller as x gets bigger and y have an relationship?

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory