Question 1

The type of radiation affected by greenhouse gasses is

Accepted Answer

A)  UV radiation. 
B)  IR radiation. 
C)  visible radiation. 
D)  gamma radiation. 
A)  UV radiation. 
B)  IR radiation. 
C)  visible radiation. 
D)  gamma radiation.

Question 2

The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is 300 meters.

Accepted Answer

A) True 
 B)False

Question 3

The increase in the amount of carbon dioxide in the atmosphere is contributing to the greenhouse effect.

Accepted Answer

A) True 
 B)False

Question 4

The type of EM radiation that has wavelength just a bit longer than that of visible light is __________.

Accepted Answer

The answer of The type of EM radiation that has...

Question 5

The ozone layer absorbs infrared radiation from sunlight.

Accepted Answer

A) True 
 B)False

Question 6

Gamma rays are emitted when high speed electrons decelerate as they are smashed into a metal target.

Accepted Answer

A) True 
 B)False

Question 7

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 8

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. 
If the Kelvin temperature of a body is doubled, the wavelength of the most intense light is __________ the wavelength originally of the most intense light.

Accepted Answer

The answer of For a body emitting blackbody radiation, the...

Question 9

The type of EM radiation that has wavelength just a bit shorter than that of visible light is

Accepted Answer

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

Question 10

A stationary electric charge produces a magnetic field around it.

Accepted Answer

A) True 
 B)False

Question 11

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because of __________.

Accepted Answer

electromag

Question 12

EM waves in a vacuum travel at a speed

Accepted Answer

A)  of c. 
B)  varying with their wavelength. 
C)  varying with their intensity. 
D)  of 299,792,458 m/s. 
A)  of c. 
B)  varying with their wavelength. 
C)  varying with their intensity. 
D)  of 299,792,458 m/s.

Question 13

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because

Accepted Answer

A)  the coil acts like a transformer. 
B)  the free electrons in the conductor experience a force when they move in the magnetic field. 
C)  an electromagnetic wave is generated. 
D)  the wire is ferromagnetic. 
E)  none of the above. 
A)  the coil acts like a transformer. 
B)  the free electrons in the conductor experience a force when they move in the magnetic field. 
C)  an electromagnetic wave is generated. 
D)  the wire is ferromagnetic. 
E)  none of the above.

Question 14

An iron nail is brought near a magnet. Which of these is not true?

Accepted Answer

A)  The nail has a north pole and a south pole. 
B)  The nail becomes a north pole or a south pole. 
C)  The magnet exerts an attractive force on the nail. 
D)  The nail exerts an attractive force on the magnet. 
E)  The nail is ferromagnetic. 
A)  The nail has a north pole and a south pole. 
B)  The nail becomes a north pole or a south pole. 
C)  The magnet exerts an attractive force on the nail. 
D)  The nail exerts an attractive force on the magnet. 
E)  The nail is ferromagnetic.

Question 15

A changing magnetic field produces an electric field.

Accepted Answer

A) True 
 B)False

Question 16

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 17

The type of EM radiation that has wavelength just a bit shorter than that of visible light is __________.

Accepted Answer

The answer of The type of EM radiation that has...

Question 18

The radio waves used to communicate with astronauts in space must be ___________ frequency waves.

Accepted Answer

The answer of The radio waves used to communicate with...

Question 19

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. 
If the Kelvin temperature of a body is doubled, the wavelength of the most intense light is double the wavelength originally of the most intense light.

Accepted Answer

A) True 
 B)False

Question 20

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.

The type of radiation affected by greenhouse gasses is

The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is 300 meters.

The increase in the amount of carbon dioxide in the atmosphere is contributing to the greenhouse effect.

The type of EM radiation that has wavelength just a bit longer than that of visible light is __________.

The ozone layer absorbs infrared radiation from sunlight.

Gamma rays are emitted when high speed electrons decelerate as they are smashed into a metal target.

The greenhouse effect is occurring because

The type of EM radiation that has wavelength just a bit shorter than that of visible light is

A stationary electric charge produces a magnetic field around it.

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because of __________.

EM waves in a vacuum travel at a speed

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because

An iron nail is brought near a magnet. Which of these is not true?

A changing magnetic field produces an electric field.

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

The type of EM radiation that has wavelength just a bit shorter than that of visible light is __________.

The radio waves used to communicate with astronauts in space must be ___________ frequency waves.

Electromagnetic induction is used in the operation of

The Study of Motion

Newton S 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

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Exam 8: Electromagnetism and Em Waves

The type of radiation affected by greenhouse gasses is

The wavelength of a radio wave from an AM station broadcasting at 1,000 kilohertz on your radio dial is 300 meters.

The increase in the amount of carbon dioxide in the atmosphere is contributing to the greenhouse effect.

The type of EM radiation that has wavelength just a bit longer than that of visible light is __________.

The ozone layer absorbs infrared radiation from sunlight.

Gamma rays are emitted when high speed electrons decelerate as they are smashed into a metal target.

The greenhouse effect is occurring because

The type of EM radiation that has wavelength just a bit shorter than that of visible light is

A stationary electric charge produces a magnetic field around it.

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because of __________.

EM waves in a vacuum travel at a speed

A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because

An iron nail is brought near a magnet. Which of these is not true?

A changing magnetic field produces an electric field.

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

The type of EM radiation that has wavelength just a bit shorter than that of visible light is __________.

The radio waves used to communicate with astronauts in space must be ___________ frequency waves.

Electromagnetic induction is used in the operation of

The Study of Motion

Newton S 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