Question 1

A star that is cooler than our Sun radiates most of its energy at slightly longer wavelengths; therefore, it appears ____________________.​

Accepted Answer

The answer of A star that is cooler than our...

Question 2

Explain the following rhyme:
Rainbow at morning, sailor take warning;
Rainbow at night, sailor's delight.​

Accepted Answer

To see the rainbow, we must face the fal

Question 3

​Light that passes through a substance is said to be refracted.

Accepted Answer

A) True 
 B)False

Question 4

​Light that travels from a less-dense to a more-dense medium ____ speed and bends ____ the normal.

Accepted Answer

A)  ​gains; toward 
B)  ​loses; toward 
C)  ​gains; away 
D)  ​loses; away 
E)  ​gains; either toward or away 
A)  ​gains; toward 
B)  ​loses; toward 
C)  ​gains; away 
D)  ​loses; away 
E)  ​gains; either toward or away

Question 5

​At sunset in the middle latitudes, look for a rainbow toward the ____.

Accepted Answer

A)  ​northwest 
B)  ​southwest 
C)  ​east 
D)  ​west 
E)  ​south 
A)  ​northwest 
B)  ​southwest 
C)  ​east 
D)  ​west 
E)  ​south

Question 6

​At high latitudes during the summer, morning and evening twilight may converge, producing a(n)____, or a nightlong twilight.

Accepted Answer

A)  ​constructive interference 
B)  ​false twilight 
C)  ​iridescence 
D)  ​white night 
E)  ​glory 
A)  ​constructive interference 
B)  ​false twilight 
C)  ​iridescence 
D)  ​white night 
E)  ​glory

Question 7

​You would most likely see a tangent arc with a ____.

Accepted Answer

A)  ​halo 
B)  ​sundog 
C)  ​rainbow 
D)  ​glory 
E)  ​corona 
A)  ​halo 
B)  ​sundog 
C)  ​rainbow 
D)  ​glory 
E)  ​corona

Question 8

How does the human eye perceive light? What would happen if humans only had rod-type receptors?

Accepted Answer

We perceive light because radiant energy

Question 9

​Volcanic eruptions rich in ____ can produce red sunsets.

Accepted Answer

A)  ​water vapor 
B)  ​sulfur 
C)  ​methane 
D)  ​carbon monoxide 
E)  ​nitrogen 
A)  ​water vapor 
B)  ​sulfur 
C)  ​methane 
D)  ​carbon monoxide 
E)  ​nitrogen

Question 10

​An atmospheric phenomenon that causes objects to appear inverted is called ____.

Accepted Answer

A)  ​a superior mirage 
B)  ​an inferior mirage 
C)  ​scintillation 
D)  ​dispersion 
E)  ​a green flash 
A)  ​a superior mirage 
B)  ​an inferior mirage 
C)  ​scintillation 
D)  ​dispersion 
E)  ​a green flash

Question 11

​When the Sun is 4° above the horizon, sunlight must pass through an atmosphere more than ____ times thicker than when the Sun is directly overhead.

Accepted Answer

A)  ​2 
B)  ​5 
C)  ​8 
D)  ​12 
E)  ​20 
A)  ​2 
B)  ​5 
C)  ​8 
D)  ​12 
E)  ​20

Question 12

​A mirage is caused by ____.

Accepted Answer

A)  ​scattering of light by air molecules 
B)  ​the bending of light by air of different densities 
C)  ​a thin layer of moist air near the ground 
D)  ​reflection of light from a hot surface 
E)  ​refraction of light through ice crystals 
A)  ​scattering of light by air molecules 
B)  ​the bending of light by air of different densities 
C)  ​a thin layer of moist air near the ground 
D)  ​reflection of light from a hot surface 
E)  ​refraction of light through ice crystals

Question 13

​The length of twilight depends on ______.

Accepted Answer

A)  ​just the seasons 
B)  ​just the latitude 
C)  ​just the longitude 
D)  ​season and latitude 
E)  ​season and longitude 
A)  ​just the seasons 
B)  ​just the latitude 
C)  ​just the longitude 
D)  ​season and latitude 
E)  ​season and longitude

Question 14

​Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, called anticrepuscular rays, radiating across the sky.

Accepted Answer

A) True 
 B)False

Question 15

​The blue color of distant mountains is due primarily to ____.

Accepted Answer

A)  ​diffraction of light 
B)  ​scattering of light 
C)  refraction of light 
D)  ​emission of light 
E)  ​absorption of light 
A)  ​diffraction of light 
B)  ​scattering of light 
C)  refraction of light 
D)  ​emission of light 
E)  ​absorption of light

Question 16

​If the setting Sun appears red, you may conclude that ____.

Accepted Answer

A)  ​the Sun's surface temperature has cooled somewhat at the end of the day 
B)  ​the longest wavelengths of visible light are striking your eyes 
C)  ​the next day's weather will be stormy 
D)  ​you will not be able to see the Moon that night 
E)  ​the shortest wavelengths of visible light are striking your eyes 
A)  ​the Sun's surface temperature has cooled somewhat at the end of the day 
B)  ​the longest wavelengths of visible light are striking your eyes 
C)  ​the next day's weather will be stormy 
D)  ​you will not be able to see the Moon that night 
E)  ​the shortest wavelengths of visible light are striking your eyes

Question 17

​Each air molecule of oxygen and nitrogen is a selective scatterer in that each scatters longer waves of visible light much more effectively than shorter waves.

Accepted Answer

A) True 
 B)False

Question 18

____________________ is the name given to the time after sunset (and immediately before sunrise) when the sky remains illuminated.​

Accepted Answer

The answer of ____________________ is the name given to the...

Question 19

​Without the atmosphere, there would be no refraction or scattering, and the Sun would rise later and set earlier than it now does.

Accepted Answer

A) True 
 B)False

Question 20

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, or ____________________ rays, radiating across the sky.​

Accepted Answer

The answer of Haze can scatter light from the rising...

A star that is cooler than our Sun radiates most of its energy at slightly longer wavelengths; therefore, it appears ____________________.

Explain the following rhyme: Rainbow at morning, sailor take warning; Rainbow at night, sailor's delight.

Light that passes through a substance is said to be refracted.

Light that travels from a less-dense to a more-dense medium speed and bends the normal.

At sunset in the middle latitudes, look for a rainbow toward the ____.

At high latitudes during the summer, morning and evening twilight may converge, producing a(n)____, or a nightlong twilight.

You would most likely see a tangent arc with a ____.

How does the human eye perceive light? What would happen if humans only had rod-type receptors?

Volcanic eruptions rich in ____ can produce red sunsets.

An atmospheric phenomenon that causes objects to appear inverted is called ____.

When the Sun is 4° above the horizon, sunlight must pass through an atmosphere more than ____ times thicker than when the Sun is directly overhead.

A mirage is caused by ____.

The length of twilight depends on ______.

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, called anticrepuscular rays, radiating across the sky.

The blue color of distant mountains is due primarily to ____.

If the setting Sun appears red, you may conclude that ____.

Each air molecule of oxygen and nitrogen is a selective scatterer in that each scatters longer waves of visible light much more effectively than shorter waves.

____________________ is the name given to the time after sunset (and immediately before sunrise) when the sky remains illuminated.

Without the atmosphere, there would be no refraction or scattering, and the Sun would rise later and set earlier than it now does.

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, or ____________________ rays, radiating across the sky.

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

A star that is cooler than our Sun radiates most of its energy at slightly longer wavelengths; therefore, it appears ____________________.​

Explain the following rhyme: Rainbow at morning, sailor take warning; Rainbow at night, sailor's delight.​

​Light that passes through a substance is said to be refracted.

​Light that travels from a less-dense to a more-dense medium ____ speed and bends ____ the normal.

​At sunset in the middle latitudes, look for a rainbow toward the ____.

​At high latitudes during the summer, morning and evening twilight may converge, producing a(n)____, or a nightlong twilight.

​You would most likely see a tangent arc with a ____.

How does the human eye perceive light? What would happen if humans only had rod-type receptors?

​Volcanic eruptions rich in ____ can produce red sunsets.

​An atmospheric phenomenon that causes objects to appear inverted is called ____.

​When the Sun is 4° above the horizon, sunlight must pass through an atmosphere more than ____ times thicker than when the Sun is directly overhead.

​A mirage is caused by ____.

​The length of twilight depends on ______.

​Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, called anticrepuscular rays, radiating across the sky.

​The blue color of distant mountains is due primarily to ____.

​If the setting Sun appears red, you may conclude that ____.

​Each air molecule of oxygen and nitrogen is a selective scatterer in that each scatters longer waves of visible light much more effectively than shorter waves.

____________________ is the name given to the time after sunset (and immediately before sunrise) when the sky remains illuminated.​

​Without the atmosphere, there would be no refraction or scattering, and the Sun would rise later and set earlier than it now does.

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, or ____________________ rays, radiating across the sky.​

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

A star that is cooler than our Sun radiates most of its energy at slightly longer wavelengths; therefore, it appears ____________________.

Explain the following rhyme: Rainbow at morning, sailor take warning; Rainbow at night, sailor's delight.

Light that passes through a substance is said to be refracted.

Light that travels from a less-dense to a more-dense medium speed and bends the normal.

At sunset in the middle latitudes, look for a rainbow toward the ____.

At high latitudes during the summer, morning and evening twilight may converge, producing a(n)____, or a nightlong twilight.

You would most likely see a tangent arc with a ____.

Volcanic eruptions rich in ____ can produce red sunsets.

An atmospheric phenomenon that causes objects to appear inverted is called ____.

When the Sun is 4° above the horizon, sunlight must pass through an atmosphere more than ____ times thicker than when the Sun is directly overhead.

A mirage is caused by ____.

The length of twilight depends on ______.

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, called anticrepuscular rays, radiating across the sky.

The blue color of distant mountains is due primarily to ____.

If the setting Sun appears red, you may conclude that ____.

Each air molecule of oxygen and nitrogen is a selective scatterer in that each scatters longer waves of visible light much more effectively than shorter waves.

____________________ is the name given to the time after sunset (and immediately before sunrise) when the sky remains illuminated.

Without the atmosphere, there would be no refraction or scattering, and the Sun would rise later and set earlier than it now does.

Haze can scatter light from the rising or setting Sun in a way that produces bright light beams, or ____________________ rays, radiating across the sky.