The difference in degrees between true north...

Question 1 / 2066636ee928f7522a1c51959f

Question 1 of 2066636ee928f7522a1c51959f

The difference in degrees between true north and magnetic north is called __________.

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Question 1 of 20

66636ee928f7522a1c51959f

The difference in degrees between true north and magnetic north is called __________.

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🔍 Key Concepts

• True north vs magnetic north on a nautical chart and compass rose • Difference between variation and deviation • What compass error is actually made up of

💭 Think About

• Look at a compass rose on a chart: which labeled value shows how far magnetic north is from true north, and what is that called? • Think about where deviation comes from—does it come from the Earth’s magnetic field, or from the vessel itself? • Is compass error a single basic quantity, or is it the combination of two other errors?

✅ Before You Answer

• Identify which term refers specifically to the Earth’s magnetic field difference between true and magnetic north • Confirm which term is caused by magnetic influences on board the vessel • Remember that compass error = variation ± deviation, so which one in the list matches only the true–magnetic difference?

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Question 1 of 20

The difference in degrees between true north and magnetic north is called __________.

drift

compass error

variation

deviation

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