Question 1

​Twilight is the name given to the time ____, when the sky remains illuminated and allows outdoor activities without artificial lighting.

Accepted Answer

A)  ​after sunset and immediately before sunrise 
B)  ​after sunset and immediately after sunrise 
C)  ​before sunset and immediately before sunrise 
D)  ​before sunset and immediately after sunrise 
E)  ​around sunset 
A)  ​after sunset and immediately before sunrise 
B)  ​after sunset and immediately after sunrise 
C)  ​before sunset and immediately before sunrise 
D)  ​before sunset and immediately after sunrise 
E)  ​around sunset A

Question 2

To see a rainbow, a person must face the falling rain with the Sun at their backs.​

Accepted Answer

A) True 
 B)False  True

Question 3

​Which atmospheric phenomenon below is produced by the diffraction of light around small water droplets?

Accepted Answer

A)  ​halo 
B)  ​inferior mirage 
C)  ​corona 
D)  ​Heiligenschein 
E)  ​sun pillar 
A)  ​halo 
B)  ​inferior mirage 
C)  ​corona 
D)  ​Heiligenschein 
E)  ​sun pillar C

Question 4

​When electromagnetic waves from the Sun reach the human eye, they stimulate antenna-like nerve endings in the ____.

Accepted Answer

A)  ​iris 
B)  ​retina 
C)  ​pupil 
D)  ​cornea 
E)  ​sclera 
A)  ​iris 
B)  ​retina 
C)  ​pupil 
D)  ​cornea 
E)  ​sclera

Question 5

​Red sunsets, blue moons, and milky-white skies are mainly the result of ____.

Accepted Answer

A)  ​refraction 
B)  ​dispersion 
C)  ​reflection 
D)  ​scattering 
E)  ​diffraction 
A)  ​refraction 
B)  ​dispersion 
C)  ​reflection 
D)  ​scattering 
E)  ​diffraction

Question 6

​Halos are caused by ____.

Accepted Answer

A)  ​refraction of light passing through raindrops 
B)  ​scattering of light by ice crystals 
C)  ​refraction of light passing through ice crystals 
D)  ​diffraction of light by cloud droplets 
E)  ​reflection of light by ice crystals 
A)  ​refraction of light passing through raindrops 
B)  ​scattering of light by ice crystals 
C)  ​refraction of light passing through ice crystals 
D)  ​diffraction of light by cloud droplets 
E)  ​reflection of light by ice crystals

Question 7

Selective scattering is also known as ____________________.​

Accepted Answer

Rayleigh s

Question 8

​A star that is cooler than our Sun appears ____.

Accepted Answer

A)  ​more violet 
B)  ​redder 
C)  ​brighter 
D)  ​whiter 
E)  bluer 
A)  ​more violet 
B)  ​redder 
C)  ​brighter 
D)  ​whiter 
E)  bluer

Question 9

Volcanic eruptions rich in sulfur produce yellow sunsets.

Accepted Answer

A) True 
 B)False

Question 10

Explain the difference between crepuscular and anticrepuscular rays.​

Accepted Answer

Haze can scatter light from the rising o

Question 11

​The presence of a halo indicates that cirriform clouds are present.

Accepted Answer

A) True 
 B)False

Question 12

What atmospheric conditions are necessary for an inferior mirage? A superior mirage?​

Accepted Answer

Inferior mirage: Occurs when the air nea

Question 13

​Imagine that this piece of paper is illuminated with white light and appears red. You see red light because the paper ____.

Accepted Answer

A)  ​absorbs red and reflects other visible wavelengths 
B)  ​emits red light 
C)  ​reflects red and absorbs other visible wavelengths 
D)  ​disperses white light 
E)  ​transmits red light 
A)  ​absorbs red and reflects other visible wavelengths 
B)  ​emits red light 
C)  ​reflects red and absorbs other visible wavelengths 
D)  ​disperses white light 
E)  ​transmits red light

Question 14

​The sky is blue because air molecules selectively ____ blue light.

Accepted Answer

A)  ​scatter 
B)  ​absorb 
C)  ​diffract 
D)  ​disperse 
E)  ​emit 
A)  ​scatter 
B)  ​absorb 
C)  ​diffract 
D)  ​disperse 
E)  ​emit

Question 15

When the bright light beams appear to converge toward the part of the horizon opposite from the Sun, the beams of light are called ____________________ rays.​

Accepted Answer

The answer of When the bright light beams appear to...

Question 16

​Look for sun pillars when the Sun is ____ on the horizon and ____ clouds are present

Accepted Answer

A)  ​low; cumulus 
B)  ​high; stratus 
C)  ​low; stratus 
D)  high; cirriform 
E)  ​low; cirriform 
A)  ​low; cumulus 
B)  ​high; stratus 
C)  ​low; stratus 
D)  high; cirriform 
E)  ​low; cirriform

Question 17

​Cloud iridescence is most often seen within 20° of the Sun, and it is often associated with clouds such as ____.

Accepted Answer

A)  ​cirrocumulus and altocumulus 
B)  ​cirrocumulus and cumulonimbus 
C)  ​altocumulus and stratocumulus 
D)  ​nimbostratus and cirrus 
E)  ​cirrostratus and cumulonimbus 
A)  ​cirrocumulus and altocumulus 
B)  ​cirrocumulus and cumulonimbus 
C)  ​altocumulus and stratocumulus 
D)  ​nimbostratus and cirrus 
E)  ​cirrostratus and cumulonimbus

Question 18

​A wet-looking road surface on a clear, hot, dry day is an example of ____.

Accepted Answer

A)  ​a superior mirage 
B)  ​scintillation 
C)  ​diffraction 
D)  ​condensation 
E)  ​shimmering 
A)  ​a superior mirage 
B)  ​scintillation 
C)  ​diffraction 
D)  ​condensation 
E)  ​shimmering

Question 19

​Which event would you most likely observe over snow-covered ground in the winter?

Accepted Answer

A)  ​superior mirage 
B)  ​sun pillars 
C)  ​crepuscular rays 
D)  ​shimmering 
E)  ​inferior mirage 
A)  ​superior mirage 
B)  ​sun pillars 
C)  ​crepuscular rays 
D)  ​shimmering 
E)  ​inferior mirage

Question 20

​What color would the sky be if air molecules selectively scattered only the longest wavelengths of visible light?​

Accepted Answer

A)  ​white 
B)  ​blue 
C)  ​red 
D)  ​black 
E)  ​violet 
A)  ​white 
B)  ​blue 
C)  ​red 
D)  ​black 
E)  ​violet

Twilight is the name given to the time ____, when the sky remains illuminated and allows outdoor activities without artificial lighting.

To see a rainbow, a person must face the falling rain with the Sun at their backs.

Which atmospheric phenomenon below is produced by the diffraction of light around small water droplets?

When electromagnetic waves from the Sun reach the human eye, they stimulate antenna-like nerve endings in the ____.

Red sunsets, blue moons, and milky-white skies are mainly the result of ____.

Halos are caused by ____.

Selective scattering is also known as ____________________.

A star that is cooler than our Sun appears ____.

Volcanic eruptions rich in sulfur produce yellow sunsets.

Explain the difference between crepuscular and anticrepuscular rays.

The presence of a halo indicates that cirriform clouds are present.

What atmospheric conditions are necessary for an inferior mirage? A superior mirage?

Imagine that this piece of paper is illuminated with white light and appears red. You see red light because the paper ____.

The sky is blue because air molecules selectively ____ blue light.

When the bright light beams appear to converge toward the part of the horizon opposite from the Sun, the beams of light are called ____________________ rays.

Look for sun pillars when the Sun is on the horizon and clouds are present

Cloud iridescence is most often seen within 20° of the Sun, and it is often associated with clouds such as ____.

A wet-looking road surface on a clear, hot, dry day is an example of ____.

Which event would you most likely observe over snow-covered ground in the winter?

What color would the sky be if air molecules selectively scattered only the longest wavelengths of visible light?

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Air Masses and Fronts

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Filters

Exam 20: Light - Color and Atmospheric Optics

​Twilight is the name given to the time ____, when the sky remains illuminated and allows outdoor activities without artificial lighting.

To see a rainbow, a person must face the falling rain with the Sun at their backs.​

​Which atmospheric phenomenon below is produced by the diffraction of light around small water droplets?

​When electromagnetic waves from the Sun reach the human eye, they stimulate antenna-like nerve endings in the ____.

​Red sunsets, blue moons, and milky-white skies are mainly the result of ____.

​Halos are caused by ____.

Selective scattering is also known as ____________________.​

​A star that is cooler than our Sun appears ____.

Volcanic eruptions rich in sulfur produce yellow sunsets.

Explain the difference between crepuscular and anticrepuscular rays.​

​The presence of a halo indicates that cirriform clouds are present.

What atmospheric conditions are necessary for an inferior mirage? A superior mirage?​

​Imagine that this piece of paper is illuminated with white light and appears red. You see red light because the paper ____.

​The sky is blue because air molecules selectively ____ blue light.

When the bright light beams appear to converge toward the part of the horizon opposite from the Sun, the beams of light are called ____________________ rays.​

​Look for sun pillars when the Sun is ____ on the horizon and ____ clouds are present

​Cloud iridescence is most often seen within 20° of the Sun, and it is often associated with clouds such as ____.

​A wet-looking road surface on a clear, hot, dry day is an example of ____.

​Which event would you most likely observe over snow-covered ground in the winter?

​What color would the sky be if air molecules selectively scattered only the longest wavelengths of visible light?​

Earth and Its Atmosphere

Energy - Warming the Earth and the Atmosphere

Seasonal and Daily Temperatures

Atmospheric Humidity

Condensation - Dew - Fog - and Clouds

Stability and Cloud Development

Precipitation

Air Pressure and Winds

Wind - Small-Scale and Local Systems

Wind - Global Systems

Air Masses and Fronts

Middle Latitude Cyclones

Weather Forecasting

Thunderstorms

Tornadoes

Hurricanes

Earths Changing Climate

Global Climate

Air Pollution

Filters

Twilight is the name given to the time ____, when the sky remains illuminated and allows outdoor activities without artificial lighting.

To see a rainbow, a person must face the falling rain with the Sun at their backs.

Which atmospheric phenomenon below is produced by the diffraction of light around small water droplets?

When electromagnetic waves from the Sun reach the human eye, they stimulate antenna-like nerve endings in the ____.

Red sunsets, blue moons, and milky-white skies are mainly the result of ____.

Halos are caused by ____.

Selective scattering is also known as ____________________.

A star that is cooler than our Sun appears ____.

Explain the difference between crepuscular and anticrepuscular rays.

The presence of a halo indicates that cirriform clouds are present.

What atmospheric conditions are necessary for an inferior mirage? A superior mirage?

Imagine that this piece of paper is illuminated with white light and appears red. You see red light because the paper ____.

The sky is blue because air molecules selectively ____ blue light.

When the bright light beams appear to converge toward the part of the horizon opposite from the Sun, the beams of light are called ____________________ rays.

Look for sun pillars when the Sun is on the horizon and clouds are present

Cloud iridescence is most often seen within 20° of the Sun, and it is often associated with clouds such as ____.

A wet-looking road surface on a clear, hot, dry day is an example of ____.

Which event would you most likely observe over snow-covered ground in the winter?

What color would the sky be if air molecules selectively scattered only the longest wavelengths of visible light?