Question 1

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 2

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

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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 5

Iron is observed in the Sun's ________.

Accepted Answer

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

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

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 8

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

Question 9

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

Question 10

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 11

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.

Question 12

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

Accepted Answer

The surface of the Sun is highly mottled...

Question 13

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

Question 14

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.

Question 15

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.

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

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 18

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

Accepted Answer

A) True 
 B)False

Question 19

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.

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

Exam 8: The Sun

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Iron is observed in the Sun's ________.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedEnergy is produced in the core. It enter...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The primary source of the Sun's energy is

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedThe surface of the Sun is highly mottled...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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Energy is produced in the core. It enter...
View Answer

Correct Answer
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The surface of the Sun is highly mottled...
View Answer

Correct Answer
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