Question 1

A sunbather on the clear day is receiving about 500 watts of solar power.

Accepted Answer

A) True 
 B)False

Question 2

Explain what the granulation of the solar surface is related to.

Accepted Answer

The surface of the Sun is highly mottled

Question 3

The critical temperature to initiate the proton-proton cycle in the cores of stars is

Accepted Answer

A)  3,000 K. 
B)  5,800 K. 
C)  2,300,000 K. 
D)  10 million K. 
E)  100 million K. 
A)  3,000 K. 
B)  5,800 K. 
C)  2,300,000 K. 
D)  10 million K. 
E)  100 million K.

Question 4

Describe the transport of energy, from the deep interior of the Sun, to when it finally reaches the Earth. Include the various methods of transport.

Accepted Answer

Energy is produced in the core. It enter

Question 5

The primary source of the Sun's energy is

Accepted Answer

A)  oxidation of carbon in the core. 
B)  gravitational collapse of the helium coreward. 
C)  dark energy. 
D)  the strong force fusing hydrogen into helium. 
E)  the weak force creating energy from uranium decay. 
A)  oxidation of carbon in the core. 
B)  gravitational collapse of the helium coreward. 
C)  dark energy. 
D)  the strong force fusing hydrogen into helium. 
E)  the weak force creating energy from uranium decay.

Question 6

In the proton-proton cycle, .007 of the mass ends up as energy, not helium.

Accepted Answer

A) True 
 B)False

Question 7

When we glimpse the chromosphere at the start and end of totality, its color is

Accepted Answer

A)  green (the famous flash). 
B)  yellow, like the photosphere below it. 
C)  red, due to ionized hydrogen at lower pressure. 
D)  blue, due to the ionization of nitrogen by the magnetic fields. 
E)  white from the moonlight. 
A)  green (the famous flash). 
B)  yellow, like the photosphere below it. 
C)  red, due to ionized hydrogen at lower pressure. 
D)  blue, due to the ionization of nitrogen by the magnetic fields. 
E)  white from the moonlight.

Question 8

While observing the Sun, you note a large number of sunspots. What can you conclude?

Accepted Answer

A)  The Sun is less luminous than usual. 
B)  This is a period of low solar activity. 
C)  Earth's climate will be unusually cold. 
D)  The Sun's rotation is slower than average. 
E)  There are likely to be an above average number of flares and prominences. 
A)  The Sun is less luminous than usual. 
B)  This is a period of low solar activity. 
C)  Earth's climate will be unusually cold. 
D)  The Sun's rotation is slower than average. 
E)  There are likely to be an above average number of flares and prominences.

Question 9

Iron is observed in the Sun's ________.

Accepted Answer

The answer of Iron is observed in the Sun's ________....

Question 10

In contrast to the photosphere's continuum, the spectrum of the chromosphere is dominated by ________ lines.

Accepted Answer

The answer of In contrast to the photosphere's continuum, the...

Question 11

The observable ________ is a thin layer of the Sun in which the solar material becomes suddenly much more opaque as we look deeper into the Sun.

Accepted Answer

The answer of The observable ________ is a thin layer...

Question 12

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

Accepted Answer

The answer of The chromosphere is red because it is...

Question 13

The concept of hydrostatic equilibrium is critical to understanding how the Sun has remained stable long enough for live to evolve here.

Accepted Answer

A) True 
 B)False

Question 14

At very large distances from the Sun, its corona turns into the solar wind.

Accepted Answer

A) True 
 B)False

Question 15

Sunspots are only about 2,000 K cooler than the much brighter photosphere.

Accepted Answer

A) True 
 B)False

Question 16

What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun?

Accepted Answer

A)  Convection, conduction 
B)  Fadiative diffusion, convection 
C)  Conduction, radiative diffusion 
D)  Fadiative diffusion, conduction 
E)  Conduction, convection 
A)  Convection, conduction 
B)  Fadiative diffusion, convection 
C)  Conduction, radiative diffusion 
D)  Fadiative diffusion, conduction 
E)  Conduction, convection

Question 17

What is the size of a typical granule or convection cell seen in the photosphere?

Accepted Answer

A)  10,000 km 
B)  1,000 km 
C)  100 km 
D)  10 km 
E)  1 km 
A)  10,000 km 
B)  1,000 km 
C)  100 km 
D)  10 km 
E)  1 km

Question 18

The Sun's luminosity is greatest when there are few or no sunspots on the Sun.

Accepted Answer

A) True 
 B)False

Question 19

From inside out, which is in the correct order for the structure of the Sun?

Accepted Answer

A)  Core, convective zone, radiative zone 
B)  Photosphere, radiative zone, corona 
C)  Radiative zone, convective zone, chromosphere 
D)  Core, chromosphere, photosphere 
E)  Convective zone, radiative zone, granulation 
A)  Core, convective zone, radiative zone 
B)  Photosphere, radiative zone, corona 
C)  Radiative zone, convective zone, chromosphere 
D)  Core, chromosphere, photosphere 
E)  Convective zone, radiative zone, granulation

Question 20

The speed of light is 3.00 × 10⁸ m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced?

Accepted Answer

A)  1.80 × 10¹⁷ J 
B)  6.00 × 10⁸ J 
C)  1.50 × 10⁸ J 
D)  6.00 × 10⁴ J 
E)  9.00 × 10¹⁶ J 
A)  1.80 × 10¹⁷ J 
B)  6.00 × 10⁸ J 
C)  1.50 × 10⁸ J 
D)  6.00 × 10⁴ J 
E)  9.00 × 10¹⁶ J

A sunbather on the clear day is receiving about 500 watts of solar power.

Explain what the granulation of the solar surface is related to.

The critical temperature to initiate the proton-proton cycle in the cores of stars is

Describe the transport of energy, from the deep interior of the Sun, to when it finally reaches the Earth. Include the various methods of transport.

The primary source of the Sun's energy is

In the proton-proton cycle, .007 of the mass ends up as energy, not helium.

When we glimpse the chromosphere at the start and end of totality, its color is

While observing the Sun, you note a large number of sunspots. What can you conclude?

Iron is observed in the Sun's ________.

In contrast to the photosphere's continuum, the spectrum of the chromosphere is dominated by ________ lines.

The observable ________ is a thin layer of the Sun in which the solar material becomes suddenly much more opaque as we look deeper into the Sun.

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

The concept of hydrostatic equilibrium is critical to understanding how the Sun has remained stable long enough for live to evolve here.

At very large distances from the Sun, its corona turns into the solar wind.

Sunspots are only about 2,000 K cooler than the much brighter photosphere.

What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun?

What is the size of a typical granule or convection cell seen in the photosphere?

The Sun's luminosity is greatest when there are few or no sunspots on the Sun.

From inside out, which is in the correct order for the structure of the Sun?

The speed of light is 3.00 × 10⁸ m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced?

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

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Exam 8: The Sun

A sunbather on the clear day is receiving about 500 watts of solar power.

Explain what the granulation of the solar surface is related to.

The critical temperature to initiate the proton-proton cycle in the cores of stars is

Describe the transport of energy, from the deep interior of the Sun, to when it finally reaches the Earth. Include the various methods of transport.

The primary source of the Sun's energy is

In the proton-proton cycle, .007 of the mass ends up as energy, not helium.

When we glimpse the chromosphere at the start and end of totality, its color is

While observing the Sun, you note a large number of sunspots. What can you conclude?

Iron is observed in the Sun's ________.

In contrast to the photosphere's continuum, the spectrum of the chromosphere is dominated by ________ lines.

The observable ________ is a thin layer of the Sun in which the solar material becomes suddenly much more opaque as we look deeper into the Sun.

The chromosphere is red because it is hot enough to ________ hydrogen atoms.

The concept of hydrostatic equilibrium is critical to understanding how the Sun has remained stable long enough for live to evolve here.

At very large distances from the Sun, its corona turns into the solar wind.

Sunspots are only about 2,000 K cooler than the much brighter photosphere.

What two energy transport mechanisms, in order from outside the core to the surface, is found in the Sun?

What is the size of a typical granule or convection cell seen in the photosphere?

The Sun's luminosity is greatest when there are few or no sunspots on the Sun.

From inside out, which is in the correct order for the structure of the Sun?

The speed of light is 3.00 × 10⁸ m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced?

The Night Sky

Light and Telescopes

The Solar System

Earth and Its Moon

The Eight Planets

Small Bodies in the Solar System

Formation of Planetary Systems

Measuring the Stars

Star Formation and Evolution

Stellar Explosions

Black Holes

The Milky Way Galaxy

Galaxies

Cosmology and the Universe

Filters