Magentism

Question 1

Where do the meridians meet

Answer 1

Geographic North Pole

Question 2

Why does the earth behave like a magnet

Answer 2

Iron core

Question 3

Where is the magnetic equator

Answer 3

Halfway between magnetic N and magnetic S

Where magnetic field lines = horizontal

Question 4

What is the horizontal component of earths magnetic field

Answer 4

H

Question 5

What is the vertical component of the earths magnetic field

Answer 5

Z

Question 6

What component of the earths magnetic field drives a compass

Answer 6

The H component

Question 7

Where is a compass most effective

Answer 7

Equator

Question 8

What are isoclinal lines

Answer 8

Lines of equal dip

Question 9

What is an aclinic line

Answer 9

Line of zero dip

Question 10

What is magnetic variation

Answer 10

Angle between north and magnetic North Pole

Question 11

If magnetic north pole is west of true North Pole what is the variation

Answer 11

West

Question 12

What are isogonals

Answer 12

Lines of equal variation

Found on maps

Question 13

What are agonic lines

Answer 13

Lines of 0 variation

Question 14

What is the maximum magnetic variation

Answer 14

180°

Question 15

What is the track on a chart

Answer 15

True track

Question 16

What is residual deviation

Answer 16

Deviation left behind after the compass swing

Question 17

Where do you find the compass deviation

Answer 17

Compass deviation card

Question 18

What does a deviation of +3 mean

Answer 18

3° east

Question 19

When are you required to do a compass swing

Answer 19

After a hard landing

As part of maintenance

Large changes in operational latitude

Stuck by lightning

If cargo is significantly magnetic

Aircraft parked in same direction for long period of time

New compass fitted