Question 1

The frequency of visible light determines its color.

Accepted Answer

A) True 
 B)False

Question 2

Lower frequency radio waves are reflected back to Earth by the ______________.

Accepted Answer

The answer of Lower frequency radio waves are reflected back...

Question 3

The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is

Accepted Answer

A) 31.3 m. 
B) 3.13 m. 
C) 0.313 m. 
D) 0.0313 m. 
E) none of the above. 
A) 31.3 m. 
B) 3.13 m. 
C) 0.313 m. 
D) 0.0313 m. 
E) none of the above.

Question 4

The ionosphere reflects __________ frequency radio waves.

Accepted Answer

The answer of The ionosphere reflects __________ frequency radio waves....

Question 5

Of the following gases,which is the most important contributor to the Earth's greenhouse effect?

Accepted Answer

A) water vapor 
B) ozone 
C) CFCs 
D) methane 
A) water vapor 
B) ozone 
C) CFCs 
D) methane

Question 6

__________ radiation causes your skin to tan.

Accepted Answer

The answer of __________ radiation causes your skin to tan....

Question 7

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.
-The peak of a body's blackbody radiation curve shifts toward longer wavelength as the temperature of the body increases.

Accepted Answer

A) True 
 B)False

Question 8

A current can be made to flow in a wire if

Accepted Answer

A) it is connected to a battery. 
B) it is put into motion near a magnet. 
C) a magnet is put into motion near it. 
D) all of the above. 
A) it is connected to a battery. 
B) it is put into motion near a magnet. 
C) a magnet is put into motion near it. 
D) all of the above.

Question 9

Thermograms use ultraviolet radiation to sense heat.

Accepted Answer

A) True 
 B)False

Question 10

​Match each item with the correct statement below.
-occurs because carbon dioxide blocks infrared but not visible light

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 11

Greenhouse gasses include

Accepted Answer

A) water vapor. 
B) CO2. 
C) CO. 
D) methane. 
A) water vapor. 
B) CO2. 
C) CO. 
D) methane.

Question 12

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.The current results because of __________.

Accepted Answer

electromag

Question 13

The ionosphere reflects

Accepted Answer

A) microwaves. 
B) AM radio waves. 
C) FM radio waves. 
D) x-rays. 
A) microwaves. 
B) AM radio waves. 
C) FM radio waves. 
D) x-rays.

Question 14

The main form of radiation that our bodies emit is

Accepted Answer

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

Question 15

Which of the following is not a common use of microwaves?

Accepted Answer

A) cooking 
B) medical imaging 
C) radar 
D) communications 
A) cooking 
B) medical imaging 
C) radar 
D) communications

Question 16

The ozone layer absorbs infrared radiation from sunlight.

Accepted Answer

A) True 
 B)False

Question 17

A radio transmitter broadcasts at a frequency of 200,000 Hz.What is the wavelength of the wave?

Accepted Answer

The answer of A radio transmitter broadcasts at a frequency...

Question 18

(a)What is the frequency of an EM wave that has a wavelength of 1 millimeter? (b)What type of EM wave is this?

Accepted Answer

(a)3 × 10¹¹

Question 19

The type of EM radiation emitted when high speed electrons decelerate as they are smashed into a metal target 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 20

The highest frequency visible light is

Accepted Answer

A) violet. 
B) red. 
C) blue. 
D) green. 
E) yellow. 
A) violet. 
B) red. 
C) blue. 
D) green. 
E) yellow.

The frequency of visible light determines its color.

Lower frequency radio waves are reflected back to Earth by the ______________.

The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is

The ionosphere reflects __________ frequency radio waves.

Of the following gases,which is the most important contributor to the Earth's greenhouse effect?

__________ radiation causes your skin to tan.

A current can be made to flow in a wire if

Thermograms use ultraviolet radiation to sense heat.

Match each item with the correct statement below. -occurs because carbon dioxide blocks infrared but not visible light

Greenhouse gasses include

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.The current results because of __________.

The ionosphere reflects

The main form of radiation that our bodies emit is

Which of the following is not a common use of microwaves?

The ozone layer absorbs infrared radiation from sunlight.

A radio transmitter broadcasts at a frequency of 200,000 Hz.What is the wavelength of the wave?

(a)What is the frequency of an EM wave that has a wavelength of 1 millimeter? (b)What type of EM wave is this?

The type of EM radiation emitted when high speed electrons decelerate as they are smashed into a metal target is

The highest frequency visible light 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 frequency of visible light determines its color.

Lower frequency radio waves are reflected back to Earth by the ______________.

The wavelength from an FM station broadcasting at 93.9 megahertz on your radio is

The ionosphere reflects __________ frequency radio waves.

Of the following gases,which is the most important contributor to the Earth's greenhouse effect?

__________ radiation causes your skin to tan.

A current can be made to flow in a wire if

Thermograms use ultraviolet radiation to sense heat.

​Match each item with the correct statement below. -occurs because carbon dioxide blocks infrared but not visible light

Greenhouse gasses include

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.The current results because of __________.

The ionosphere reflects

The main form of radiation that our bodies emit is

Which of the following is not a common use of microwaves?

The ozone layer absorbs infrared radiation from sunlight.

A radio transmitter broadcasts at a frequency of 200,000 Hz.What is the wavelength of the wave?

(a)What is the frequency of an EM wave that has a wavelength of 1 millimeter? (b)What type of EM wave is this?

The type of EM radiation emitted when high speed electrons decelerate as they are smashed into a metal target is

The highest frequency visible light 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. -occurs because carbon dioxide blocks infrared but not visible light