Isogonals converge at the: Magnetic equator North magnetic pole only North and South geographic and magnetic poles

1) Deviation in a magnetic compass is caused by the

2) During flight, when are the indications of a magnetic compass accurate

3) Near the magnetic pole?

4) The long term periodic change in the Earth’s Magnetic Field?

5) Given the fallowing Magnetic heading: 0600 Magnetic variation: 80W Drift angle: 40 right, what is the true track?