On an isomagnetic chart, the line of zero...

On an isomagnetic chart, the line of zero...

Question 1 of 27070

Q

On an isomagnetic chart, the line of zero variation is the __________.

A

zero variation line

B

variation line

C

isogonic line

D

agonic line

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Question 1 / 2707066636ee928f7522a1c519a23

Question 1 of 2707066636ee928f7522a1c519a23

On an isomagnetic chart, the line of zero variation is the __________.

Question 1 of 27070

Study area:

Study area:

Q

On an isomagnetic chart, the line of zero variation is the __________.

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🔍 Key Concepts

• Magnetic variation: the angle between true north and magnetic north • Difference between isogonic and agonic lines on an isomagnetic chart • How lines of equal magnetic variation are labeled on charts

💭 Think About

• Which term is used for lines joining places of equal magnetic variation that is NOT zero? • What special name is given to the line where magnetic variation is exactly zero? • Look at the roots of the words: what does the prefix "a-" usually mean in scientific terms?

✅ Before You Answer

• Be sure you know that isogonic lines connect equal (non-zero) variation values • Identify which option specifically refers to zero magnetic variation rather than just any variation • Confirm that the term you choose is the standard one used on navigation and isomagnetic charts