Magnetic Instruments

What surrounds the Earth to create lines of magnetic force from magnetic North to South Poles?

• An electric field

• A gravitational field

• A magnetic field

• A radiation field

What are the lines of magnetic force called?

• Lines of electric flux

• Lines of magnetic flux

• Lines of gravitational pull

• Lines of radiation

How do magnets tend to behave in relation to the Earth's magnetic flux lines?

• They repel away from the flux lines.

• They rotate perpendicular to the flux lines.

• They tend to line up with the flux lines.

• They have no interaction with the flux lines.

Are the magnetic poles and geographical poles of the Earth the same?

• Yes, they are the same.

• No, they are different.

• Yes, but only during equinoxes.

• No, they coincide once every millennium.

Can the location of magnetic poles change over time?

• No, they are fixed.

• Yes, but only during solar eclipses.

• Yes, they can change over time.

• No, they change only during geomagnetic reversals.

Is a compass required in all aircraft?

• Yes

• No

• Only in military aircraft

• Only in commercial aircraft

What does a magnetic compass point to?

• True north

• Magnetic south

• Magnetic north

• Geographic north

Which of the following is NOT a type of compass error listed on the page?

• Variation

• Deviation

• Northerly turning error

• Magnetic dip

Which compass error occurs due to the aircraft's magnetic field?

• Variation

• Deviation

• Northerly turning error

• Acceleration error

What type of error is caused by acceleration or deceleration in an east or west heading?

• Variation

• Deviation

• Northerly turning error

• Acceleration error