Question 1

The total radiant power emitted by a blackbody is proportional to its _________________ raised to the fourth power.

Accepted Answer

The answer of The total radiant power emitted by a...

Question 2

X rays are used in radar.

Accepted Answer

A) True 
 B)False

Question 3

AM radio stations have greater range than FM stations because

Accepted Answer

A) AM is more efficient than FM. 
B) they have more powerful transmitters. 
C) their lower frequency radio waves reflect off the ionosphere. 
D) none of the above 
A) AM is more efficient than FM. 
B) they have more powerful transmitters. 
C) their lower frequency radio waves reflect off the ionosphere. 
D) none of the above

Question 4

Gamma radiation is the highest frequency of EM waves.

Accepted Answer

A) True 
 B)False

Question 5

Electromagnetic induction is used in the operation of

Accepted Answer

A) generators. 
B) transformers. 
C) dynamic microphones. 
D) regenerative braking. 
E) all of the above. 
A) generators. 
B) transformers. 
C) dynamic microphones. 
D) regenerative braking. 
E) all of the above.

Question 6

The deviation from the way a compass needle points from the true north direction is the magnetic declination.

Accepted Answer

A) True 
 B)False

Question 7

​Match each item with the correct statement below.
-the highest frequency electromagnetic waves

Accepted Answer

A) ​blackbody radiation 
B) ​carbon dioxide 
C) ​electromagnetic induction 
D) ​gamma rays 
E) ​greenhouse effect
F)​infrared
G)​ionosphere
H)​lodestone
I)​magnetic field
J)​microwaves
K)​ozone
L)​radio waves
M)​transformer
N)​ultraviolet
O)​x rays 
A) ​blackbody radiation 
B) ​carbon dioxide 
C) ​electromagnetic induction 
D) ​gamma rays 
E) ​greenhouse effect
F)​infrared
G)​ionosphere
H)​lodestone
I)​magnetic field
J)​microwaves
K)​ozone
L)​radio waves
M)​transformer
N)​ultraviolet
O)​x rays

Question 8

Modern aircraft weather radars operate in the _____________ portion of the EM spectrum.

Accepted Answer

The answer of Modern aircraft weather radars operate in the...

Question 9

The ozone layer

Accepted Answer

A) reflects all EM waves. 
B) reflects high frequency radio waves. 
C) reflects low frequency radio waves. 
D) is responsible for the greenhouse effect. 
E) absorbs ultraviolet light in sunlight. 
A) reflects all EM waves. 
B) reflects high frequency radio waves. 
C) reflects low frequency radio waves. 
D) is responsible for the greenhouse effect. 
E) absorbs ultraviolet light in sunlight.

Question 10

Three devices that use electromagnetic induction in their operation are __________,__________,and __________.

Accepted Answer

generators,transform

Question 11

Infrared radiation causes your skin to tan.

Accepted Answer

A) True 
 B)False

Question 12

A magnetic field will be produced at a point in space if an electric field at that point

Accepted Answer

A) exists. 
B) gets stronger. 
C) gets weaker. 
D) changes direction. 
E) all of the above 
A) exists. 
B) gets stronger. 
C) gets weaker. 
D) changes direction. 
E) all of the above

Question 13

A superconductor expels any magnetic field from its interior.This is called __________.

Accepted Answer

The answer of A superconductor expels any magnetic field from...

Question 14

The direction of the force on an electric charge in a magnetic field is

Accepted Answer

A) in the direction of the magnetic field. 
B) in the direction of motion of the charge. 
C) perpendicular to the magnetic field. 
D) perpendicular to the direction of motion of the charge. 
E) none of the above. 
A) in the direction of the magnetic field. 
B) in the direction of motion of the charge. 
C) perpendicular to the magnetic field. 
D) perpendicular to the direction of motion of the charge. 
E) none of the above.

Question 15

​Match each item with the correct statement below.
-a naturally occurring ferromagnetic substance

Accepted Answer

A) ​blackbody radiation 
B) ​carbon dioxide 
C) ​electromagnetic induction 
D) ​gamma rays 
E) ​greenhouse effect
F)​infrared
G)​ionosphere
H)​lodestone
I)​magnetic field
J)​microwaves
K)​ozone
L)​radio waves
M)​transformer
N)​ultraviolet
O)​x rays 
A) ​blackbody radiation 
B) ​carbon dioxide 
C) ​electromagnetic induction 
D) ​gamma rays 
E) ​greenhouse effect
F)​infrared
G)​ionosphere
H)​lodestone
I)​magnetic field
J)​microwaves
K)​ozone
L)​radio waves
M)​transformer
N)​ultraviolet
O)​x rays

Question 16

A coil of wire is connected to a galvanometer.When a bar magnet is moved in and out of the coil,the galvanometer records a current because of electromagnetic induction.

Accepted Answer

A) True 
 B)False

Question 17

For a body emitting blackbody radiation,the total power emitted is proportional to the 4th power of the body's absolute temperature:   (T in kelvins)
and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body's absolute temperature according to:   (   in meters,T in kelvins)
Assume an object is emitting blackbody radiation.
-A body in a room at 300 K is heated to 3,000 K.The wavelength of the most intense EM radiation emitted by the body at 3,000 K is 10 times the wavelength of the most intense EM radiation at 300 K.

Accepted Answer

A) True 
 B)False

Question 18

The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs __________ radiation.

Accepted Answer

The answer of The greenhouse effect occurs because carbon dioxide...

Question 19

The greenhouse effect is occurring because

Accepted Answer

A) the ozone layer is being depleted. 
B) the amount of carbon dioxide in the atmosphere is increasing. 
C) the ionosphere reflects low frequency radiation. 
D) more ultraviolet radiation is penetrating the atmosphere. 
E) none of the above. 
A) the ozone layer is being depleted. 
B) the amount of carbon dioxide in the atmosphere is increasing. 
C) the ionosphere reflects low frequency radiation. 
D) more ultraviolet radiation is penetrating the atmosphere. 
E) none of the above.

Question 20

The type of EM wave having the highest frequency is

Accepted Answer

A) ultraviolet. 
B) infrared. 
C) x-rays. 
D) microwave. 
E) gamma rays. 
A) ultraviolet. 
B) infrared. 
C) x-rays. 
D) microwave. 
E) gamma rays.

The total radiant power emitted by a blackbody is proportional to its _________________ raised to the fourth power.

X rays are used in radar.

AM radio stations have greater range than FM stations because

Gamma radiation is the highest frequency of EM waves.

Electromagnetic induction is used in the operation of

The deviation from the way a compass needle points from the true north direction is the magnetic declination.

Match each item with the correct statement below. -the highest frequency electromagnetic waves

Modern aircraft weather radars operate in the _____________ portion of the EM spectrum.

The ozone layer

Three devices that use electromagnetic induction in their operation are ,,and __.

Infrared radiation causes your skin to tan.

A magnetic field will be produced at a point in space if an electric field at that point

A superconductor expels any magnetic field from its interior.This is called __________.

The direction of the force on an electric charge in a magnetic field is

Match each item with the correct statement below. -a naturally occurring ferromagnetic substance

A coil of wire is connected to a galvanometer.When a bar magnet is moved in and out of the coil,the galvanometer records a current because of electromagnetic induction.

The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs __________ radiation.

The greenhouse effect is occurring because

The type of EM wave having the highest frequency is

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Exam 8: Electromagnetism and Em Waves

The total radiant power emitted by a blackbody is proportional to its _________________ raised to the fourth power.

X rays are used in radar.

AM radio stations have greater range than FM stations because

Gamma radiation is the highest frequency of EM waves.

Electromagnetic induction is used in the operation of

The deviation from the way a compass needle points from the true north direction is the magnetic declination.

​Match each item with the correct statement below. -the highest frequency electromagnetic waves

Modern aircraft weather radars operate in the _____________ portion of the EM spectrum.

The ozone layer

Three devices that use electromagnetic induction in their operation are __________,__________,and __________.

Infrared radiation causes your skin to tan.

A magnetic field will be produced at a point in space if an electric field at that point

A superconductor expels any magnetic field from its interior.This is called __________.

The direction of the force on an electric charge in a magnetic field is

​Match each item with the correct statement below. -a naturally occurring ferromagnetic substance

A coil of wire is connected to a galvanometer.When a bar magnet is moved in and out of the coil,the galvanometer records a current because of electromagnetic induction.

The greenhouse effect occurs because carbon dioxide in the atmosphere absorbs __________ radiation.

The greenhouse effect is occurring because

The type of EM wave having the highest frequency is

The Study of Motion

Newtons Laws

Energy and Conservation Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Match each item with the correct statement below. -the highest frequency electromagnetic waves

Three devices that use electromagnetic induction in their operation are ,,and __.

Match each item with the correct statement below. -a naturally occurring ferromagnetic substance