Magnetic variation changes with a change in...

Question 1 of 2707066636ee928f7522a1c519b5f

Magnetic variation changes with a change in __________.

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Question 1 of 27070

Q

Magnetic variation changes with a change in __________.

🔍 Key Concepts

• Magnetic variation is the angle between true north and magnetic north • Variation is shown on nautical charts for specific locations on the Earth • Think about what changes when you move the vessel to a different geographic area vs. what changes when you just turn the vessel

💭 Think About

• Does magnetic variation depend on how the compass is pointed, or on where you are on the Earth? • Which of the choices would cause the angle between true north and magnetic north to be different? • Look at how variation is printed on a chart: does it change with heading, weather, or geographic location?

✅ Before You Answer

• Check how isogonic lines (lines of equal variation) are drawn on charts • Confirm that variation is a property of the Earth’s magnetic field, not of the vessel • Eliminate any options that are about the vessel’s heading or temporary environmental conditions rather than geographic location