What causes variation in a compass?

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What causes variation in a compass?

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🔍 Key Concepts

• Difference between variation and deviation in compass errors • Source of the Earth's magnetic field • Whether the cause is inside the vessel or outside the vessel

💭 Think About

• Ask yourself: Is variation the same everywhere on the ship, or does it change from place to place on the globe? • Would variation be shown on a nautical chart, or adjusted for using soft iron and magnets around the compass? • Which of these choices could affect EVERY ship in the same geographic area, regardless of its construction or cargo?

✅ Before You Answer

• Confirm that variation is related to the difference between true north and magnetic north • Confirm that deviation (not variation) is caused by magnetism inside the vessel • Eliminate any options that sound like mechanical problems rather than magnetic ones

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Question 1 of 2066636ee928f7522a1c5192a4

What causes variation in a compass?

Back

Question 1 of 20

66636ee928f7522a1c5192a4

Q

What causes variation in a compass?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Difference between variation and deviation in compass errors • Source of the Earth's magnetic field • Whether the cause is inside the vessel or outside the vessel

💭 Think About

• Ask yourself: Is variation the same everywhere on the ship, or does it change from place to place on the globe? • Would variation be shown on a nautical chart, or adjusted for using soft iron and magnets around the compass? • Which of these choices could affect EVERY ship in the same geographic area, regardless of its construction or cargo?

✅ Before You Answer

• Confirm that variation is related to the difference between true north and magnetic north • Confirm that deviation (not variation) is caused by magnetism inside the vessel • Eliminate any options that sound like mechanical problems rather than magnetic ones

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed