Question 1

A beam of electrons can pass through a magnetic field without being deflected if the direction of the beam is

Accepted Answer

A) parallel to the field lines. 
B) perpendicular to the field lines. 
C) none of these 
A) parallel to the field lines. 
B) perpendicular to the field lines. 
C) none of these

Question 2

Over geologic history the Earth's magnetic field

Accepted Answer

A) has been relatively stable. 
B) has increased in strength exponentially. 
C) has reversed direction many times. 
D) is unknown. 
A) has been relatively stable. 
B) has increased in strength exponentially. 
C) has reversed direction many times. 
D) is unknown.

Question 3

Magnetic compasses reportedly were first used for navigation by

Accepted Answer

A) Aristotle. 
B) Australian aborigines. 
C) Chinese sailors. 
D) none of the above 
A) Aristotle. 
B) Australian aborigines. 
C) Chinese sailors. 
D) none of the above

Question 4

Magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on magnet B is

Accepted Answer

A) at or about 50 N. 
B) exactly 100 N. 
C) need more information 
A) at or about 50 N. 
B) exactly 100 N. 
C) need more information

Question 5

Biomagnetism has been detected in

Accepted Answer

A) bacteria. 
B) pigeons. 
C) wasps. 
D) humans. 
E) all of the above 
A) bacteria. 
B) pigeons. 
C) wasps. 
D) humans. 
E) all of the above

Exam 24: Magnetism

A beam of electrons can pass through a magnetic field without being deflected if the direction of the beam is

Over geologic history the Earth's magnetic field

Magnetic compasses reportedly were first used for navigation by

Magnet A has twice the magnetic field strength of Magnet B and at a certain distance pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on magnet B is

Biomagnetism has been detected in

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