Magnetic Declination and Conversions

This video tutorial explains magnetic declination, the difference between true north and magnetic north, and how to calculate magnetic declination. It covers factors affecting declination, such as time and location, and provides step-by-step examples of calculations with and without conversion. The tutorial concludes with an invitation to subscribe and follow for more content.

What is the angle between true north and magnetic north called?

• Magnetic inclination

• Magnetic declination

• Magnetic deviation

• Magnetic variation

Which of the following factors can cause magnetic declination to change?

• Time and location

• Temperature and pressure

• Altitude and depth

• Latitude and longitude

How many minutes are there in one degree?

• 30 minutes

• 90 minutes

• 45 minutes

• 60 minutes

If the direction of magnetic declination is west, what should you do during calculations?

• Divide

• Multiply

• Add

• Subtract

In the example without conversions, what was the mean magnetic declination recorded in 2014?

• 20 degrees and 15 minutes east

• 15 degrees and 10 minutes west

• 18 degrees and 12 minutes west

• 22 degrees and 18 minutes east

In the example without conversions, what was the mean annual change?

• 7 minutes east

• 3 minutes east

• 4 minutes west

• 5 minutes west

In the example with conversions, what was the mean magnetic declination recorded in 2006?

• 23 degrees and 53 minutes

• 25 degrees and 45 minutes

• 20 degrees and 50 minutes

• 22 degrees and 40 minutes

In the example with conversions, what was the mean annual change?

• 6 minutes west

• 7 minutes west

• 5 minutes east

• 4 minutes east

What should you do if the calculated minutes exceed 60 during conversion?

• Add them to the degrees

• Ignore the excess

• Subtract them from the degrees

• Multiply them by 2

Why is it incorrect to use a calculator for converting minutes to degrees?

• It is against the rules

• It results in incorrect decimal places

• Calculators are too slow

• Calculators cannot handle degrees