Energy, Absorption, and Reflection We now move our discussion from the planet Ve
ID: 159569 • Letter: E
Question
Energy, Absorption, and Reflection
We now move our discussion from the planet Venus to the topic of greenhouse gasses. This section of this lab is about energy, absorption, and reflection. Objects give off different amounts of light depending on their temperature. Figure 6 shows the energy output of our Sun along with the percent of energy given off by the Sun in the ultraviolet (UV), visible (VIS), and infrared (IR) portions of the electromagnetic spectrum.
Energy, Absorption, and Reflection (cont.)
Earth's surface temperature is affected by light that is absorbed at the surface. A photon's ability to travel through our atmosphere depends on its wavelength. Figure 7 shows that some wavelengths of light are absorbed in our atmosphere more than others. The figure also lists the primary gas molecules responsible for absorbing the different wavelengths of light. Molecules that are transparent to visible light but absorb and re-emit infrared light are known as greenhouse gases.
After visible light from the Sun reaches the surface of Earth, some of the light is reflected back toward space as visible light; the remaining light is absorbed by the ground. Reflected light does not change the temperature of the surface, whereas absorbed light causes the temperature of the surface to increase. Earth's heated surface then gives off infrared light to Earth's atmosphere. As an example, on a hot day, black asphalt absorbs more visible light and gives off more infrared light than does a white crosswalk.
Which two forms of light account for the majority of energy coming from the sun?
Ultraviolet and visible
Visible and infrared
Infrared and fluorescent
Ultraviolet and infrared
1 points
QUESTION 24
Which type of light has the easiest time getting through our atmosphere?
Ultraviolet
Visible
Infrared
Fluorescent
1 points
QUESTION 25
Which type of light experiences the most absorption?
Ultraviolet
Visible
Infrared
Fluorescent
1 points
QUESTION 26
Why is ultraviolet light NOT an important energy source for heating the surface of Earth?
Because very little ultraviolet light comes from the Sun and almost all of it is absorbed by Earth.
Because very little ultraviolet light comes from the Sun and very little of it is absorbed by Earth.
Because most of the energy coming from the Sun is ultraviolet light and very little of it is absorbed by Earth.
Because most of the energy coming from the Sun is ultraviolet light and almost all of it is absorbed by Earth.
1 points
QUESTION 27
Which gas molecules are primarily responsible for the absorption of ultraviolet light?
CO2
H2O and CO2
O2 and O3
None
1 points
QUESTION 28
Which gas molecules are primarily responsible for the absorption of visible light?
H2O
H2O and CO2
O2 and O3
None
1 points
QUESTION 29
Which gas molecules are primarily responsible for the absorption of infrared light?
H2O
H2O and CO2
O2 and O3
None
1 points
QUESTION 30
What are the two greenhouse gases most responsible for absorbing infrared light in Earth’s atmosphere?
H2O and O2
H2O and CO2
O2 and O3
O2 and CO2
1 points
QUESTION 31
The Sun is approximately 6000° K at the surface and has an energy distribution that peaks at visible wavelengths. Earth’s surface is much cooler at about 288° K. What type of light does Earth’s surface primarily give off?
Ultraviolet, because Earth’s surface must peak at wavelengths that are longer than visible (corresponding to cooler temperatures).
Ultraviolet, because Earth’s surface must peak at wavelengths that are shorter than visible (corresponding to warmer temperatures).
Infrared, because Earth’s surface must peak at wavelengths that are longer than visible (corresponding to cooler temperatures).
Infrared, because Earth’s surface must peak at wavelengths that are shorter than visible (corresponding to warmer temperatures).
1 points
QUESTION 32
Does Earth’s surface give off light at night and, if so, what type?
No, Earth’s surface does not give off light at night.
Yes, Earth’s surface gives off visible light at night.
Yes, Earth’s surface gives off ultraviolet light at night.
Yes, Earth’s surface gives off infrared light at night.
1 points
QUESTION 33
What is the total amount of energy coming from the Sun (in watts per square meter)?
168
195
342
452
1 points
QUESTION 34
Lab 6 Figure 8 - Click Image to Enlarge
Lab 6 Figure 9 - Click Image to Enlarge
The Greenhouse Effect
Figure 8 shows how light/energy flows through the Earth system for the "greenhouse effect." The numbers listed describe the amount of energy flowing through the system (in units of watts per square meter). A larger number indicates that more energy is flowing through that labeled pathway.
Use Figures 8 and 9 when answering the questions.
What is the total amount of energy emitted and reflected by Earth to space (in watts per square meter)?
168
195
342
452
1 points
QUESTION 35
How is the total amount of energy emitted by Earth to space related to the total amount of energy coming from the Sun?
The energy emitted from Earth to space is less than the energy coming from the Sun.
The energy emitted from Earth to space is the same as the energy coming from the Sun.
The energy emitted from Earth to space is greater than the energy coming from the Sun.
1 points
QUESTION 36
What type of light primarily heats the Earth’s surface?
Ultraviolet light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and infrared light from the Earth’s atmosphere
Infrared light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and visible light from the Earth’s atmosphere
1 points
QUESTION 37
What type of light primarily heats the Earth’s atmosphere?
Ultraviolet light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and infrared light from the Earth’s atmosphere
Infrared light from the Sun and infrared light from the Earth’s atmosphere
Visible light from the Sun and ultraviolet light from the Earth’s atmosphere
1 points
QUESTION 38
Is more energy absorbed by Earth’s surface in the form of light coming from the Sun or light emitted by Earth’s atmosphere?
Light coming from the sun
Light emitted by Earth’s atmosphere
The light coming from the Sun equals the light emitted by Earth’s atmosphere
1 points
QUESTION 39
Because of the light absorbed by Earth’s surface that was emitted by Earth’s atmosphere, Earth’s temperature is cooler than it would be without this absorbed light.
True
False
1 points
QUESTION 40
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent infrared light?
9A
9A, 9B, 9E, and 9G
9D, 9F, and 9H
9C, 9E, 9F, 9G, and 9H
1 points
QUESTION 41
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent ultraviolet light?
9C
9A, 9B, 9C, and 9D
9E and 9G
9E, 9F, 9G, and 9H
1 points
QUESTION 42
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent visible light?
9C
9A, 9B, and 9D
9A, 9C and 9G
9E, 9F, 9G, and 9H
Energy, Absorption, and Reflection (cont.)
Earth's surface temperature is affected by light that is absorbed at the surface. A photon's ability to travel through our atmosphere depends on its wavelength. Figure 7 shows that some wavelengths of light are absorbed in our atmosphere more than others. The figure also lists the primary gas molecules responsible for absorbing the different wavelengths of light. Molecules that are transparent to visible light but absorb and re-emit infrared light are known as greenhouse gases.
After visible light from the Sun reaches the surface of Earth, some of the light is reflected back toward space as visible light; the remaining light is absorbed by the ground. Reflected light does not change the temperature of the surface, whereas absorbed light causes the temperature of the surface to increase. Earth's heated surface then gives off infrared light to Earth's atmosphere. As an example, on a hot day, black asphalt absorbs more visible light and gives off more infrared light than does a white crosswalk.
Which two forms of light account for the majority of energy coming from the sun?
Ultraviolet and visible
Visible and infrared
Infrared and fluorescent
Ultraviolet and infrared
1 points
QUESTION 24
Which type of light has the easiest time getting through our atmosphere?
Ultraviolet
Visible
Infrared
Fluorescent
1 points
QUESTION 25
Which type of light experiences the most absorption?
Ultraviolet
Visible
Infrared
Fluorescent
1 points
QUESTION 26
Why is ultraviolet light NOT an important energy source for heating the surface of Earth?
Because very little ultraviolet light comes from the Sun and almost all of it is absorbed by Earth.
Because very little ultraviolet light comes from the Sun and very little of it is absorbed by Earth.
Because most of the energy coming from the Sun is ultraviolet light and very little of it is absorbed by Earth.
Because most of the energy coming from the Sun is ultraviolet light and almost all of it is absorbed by Earth.
1 points
QUESTION 27
Which gas molecules are primarily responsible for the absorption of ultraviolet light?
CO2
H2O and CO2
O2 and O3
None
1 points
QUESTION 28
Which gas molecules are primarily responsible for the absorption of visible light?
H2O
H2O and CO2
O2 and O3
None
1 points
QUESTION 29
Which gas molecules are primarily responsible for the absorption of infrared light?
H2O
H2O and CO2
O2 and O3
None
1 points
QUESTION 30
What are the two greenhouse gases most responsible for absorbing infrared light in Earth’s atmosphere?
H2O and O2
H2O and CO2
O2 and O3
O2 and CO2
1 points
QUESTION 31
The Sun is approximately 6000° K at the surface and has an energy distribution that peaks at visible wavelengths. Earth’s surface is much cooler at about 288° K. What type of light does Earth’s surface primarily give off?
Ultraviolet, because Earth’s surface must peak at wavelengths that are longer than visible (corresponding to cooler temperatures).
Ultraviolet, because Earth’s surface must peak at wavelengths that are shorter than visible (corresponding to warmer temperatures).
Infrared, because Earth’s surface must peak at wavelengths that are longer than visible (corresponding to cooler temperatures).
Infrared, because Earth’s surface must peak at wavelengths that are shorter than visible (corresponding to warmer temperatures).
1 points
QUESTION 32
Does Earth’s surface give off light at night and, if so, what type?
No, Earth’s surface does not give off light at night.
Yes, Earth’s surface gives off visible light at night.
Yes, Earth’s surface gives off ultraviolet light at night.
Yes, Earth’s surface gives off infrared light at night.
1 points
QUESTION 33
What is the total amount of energy coming from the Sun (in watts per square meter)?
168
195
342
452
1 points
QUESTION 34
Lab 6 Figure 8 - Click Image to Enlarge
Lab 6 Figure 9 - Click Image to Enlarge
The Greenhouse Effect
Figure 8 shows how light/energy flows through the Earth system for the "greenhouse effect." The numbers listed describe the amount of energy flowing through the system (in units of watts per square meter). A larger number indicates that more energy is flowing through that labeled pathway.
Use Figures 8 and 9 when answering the questions.
What is the total amount of energy emitted and reflected by Earth to space (in watts per square meter)?
168
195
342
452
1 points
QUESTION 35
How is the total amount of energy emitted by Earth to space related to the total amount of energy coming from the Sun?
The energy emitted from Earth to space is less than the energy coming from the Sun.
The energy emitted from Earth to space is the same as the energy coming from the Sun.
The energy emitted from Earth to space is greater than the energy coming from the Sun.
1 points
QUESTION 36
What type of light primarily heats the Earth’s surface?
Ultraviolet light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and infrared light from the Earth’s atmosphere
Infrared light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and visible light from the Earth’s atmosphere
1 points
QUESTION 37
What type of light primarily heats the Earth’s atmosphere?
Ultraviolet light from the Sun and visible light from the Earth’s atmosphere
Visible light from the Sun and infrared light from the Earth’s atmosphere
Infrared light from the Sun and infrared light from the Earth’s atmosphere
Visible light from the Sun and ultraviolet light from the Earth’s atmosphere
1 points
QUESTION 38
Is more energy absorbed by Earth’s surface in the form of light coming from the Sun or light emitted by Earth’s atmosphere?
Light coming from the sun
Light emitted by Earth’s atmosphere
The light coming from the Sun equals the light emitted by Earth’s atmosphere
1 points
QUESTION 39
Because of the light absorbed by Earth’s surface that was emitted by Earth’s atmosphere, Earth’s temperature is cooler than it would be without this absorbed light.
True
False
1 points
QUESTION 40
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent infrared light?
9A
9A, 9B, 9E, and 9G
9D, 9F, and 9H
9C, 9E, 9F, 9G, and 9H
1 points
QUESTION 41
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent ultraviolet light?
9C
9A, 9B, 9C, and 9D
9E and 9G
9E, 9F, 9G, and 9H
1 points
QUESTION 42
In Figure 9, the labeled boxes 9A through 9H represent various types of light. Which box(es) represent visible light?
9C
9A, 9B, and 9D
9A, 9C and 9G
9E, 9F, 9G, and 9H
Explanation / Answer
1. Maximum energy comes in the form visible and infra red rays. Infrared rays causes the heating effect and visible rays are responsible for all the colors and world we see
2. Infrared rays can penetrate most easily in the earthatmosphere
3.infrared rays are mostabsorbed by the green house gases.
4.option c is correct because maximum of the ultraviolet light is reflected back by the ozone layer
5. Option c is correct . Ozone O3 is responsible for absoprtion of ultraviolet light
6.none because visible light is not absorbed in the atmosphere
7. H2O and CO2 is responsible for absorption of infrared light.
8. H2O and CO2 is the answer because these are the green house gases in the atmosphere
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