Chapter 4

Question 1

What is true direction?

Answer 1

Your bearing relative to true north

Question 2

What is variation

Answer 2

The angular difference between geographic and magnetic north

Question 3

What is magnetic direction?

Answer 3

Your direction taking into account the magnetic variation. The variation changes all over the world

Question 4

What is an isogonal?

Answer 4

Lines joining areas with the same magnetic variation

Question 5

What does a green isogonal mean?

Answer 5

There is no magnetic variation

Question 6

What does a red isogonal mean?

Answer 6

There is Easterly variation

Question 7

What does a blue isogonal mean?

Answer 7

There is westerly variation

Question 8

If you have westerly variation will magnetic direction be higher or lower than true variation?

Answer 8

Magnetic higher than true

Question 9

If you have easterly variation will magnetic direction be higher or lower than true variation

Answer 9

Magnetic will be lower than true

Question 10

What does the letter M stand for?

i.e. 90degrees M

Answer 10

Magnetic heading

Question 11

What is a deviation card?

Answer 11

A card in a plane that tells you corrections needed to obtain accurate magnetic readings

Question 12

What does the letter C stand for? i.e. 217degrees C

Answer 12

Compass direction

Question 13

Why do you get deviation?

Answer 13

Magnetic fields are altered slightly by the aircraft

Question 14

If you have deviation west will the compass direction be higher or lower than magnetic direction?

Answer 14

Compass will be higher than magnetic

Question 15

If you have deviation east will the compass direction be higher or lower than magnetic direction

Answer 15

Compass will be lower than magnetic

Question 16

Where do compass work best?

Answer 16

Mid latitudes near the equator

Question 17

What is dip?

Answer 17

The nearer you get to the poles, the less effective a compass will be as it will be prone to pointing downwards

Question 18

How can you resolve dip?

Answer 18

By using a horizontal component

Question 19

What happens to a compass when turning?

Answer 19

It reads incorrect due to acceleration but will settle when straight and level

Question 20

What are the compass checks?

Answer 20

Compass and glass are secure
Easy to read
No bubbles 
Compass deviation card is there
Turns freely