Question 1

The sunspot cycle is sometimes described as lasting 11 years,but others prefer to consider it as 22 years; explain the rationale.

Accepted Answer

The number of sunspots comes to a peak a...

Question 2

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, granulationF) B) and C)
G) A) and C)

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

How many planet Earths could fit inside the Sun?

Accepted Answer

A)   110
B)   about a thousand
C)   a little over a million
D)   almost ten million
E)   close to a billionF) A) and D)
G) C) and E) C

Question 5

What happens to most of the solar neutrinos between the Sun's core and Earth?

Accepted Answer

Two-thirds of them d...

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

Iron is observed in the Sun's ________.

Accepted Answer

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

Question 8

If the last peak in sunspot numbers occurred in 2013,then the next solar max is ________.

Accepted Answer

2024.

Question 9

The percentage (by mass) of the Sun that is Hydrogen is about:

Accepted Answer

A)   91%.
B)   71%.
C)   27%.
D)   9%.
E)   less than 1%.F) C) and E)
G) B) and E)

Question 10

In spite of its high temperature,we observe the solar corona best during ________.

Accepted Answer

a total so...

Question 11

The Sun's magnetic field has been traced out far beyond the orbit of Pluto and even Sedna.

Accepted Answer

A) True 
 B)False

Question 12

Apply Wein's law to explain the corona's main energy release.

Accepted Answer

At millions of degrees,most of...

Question 13

Sunspots:

Accepted Answer

A)   are always found close to the Sun's poles.
B)   come in pairs, representing the north and south magnetic fields.
C)   were most numerous during the Maunder Minimum.
D)   travel over the surface of the Sun from pole to pole.
E)   are relatively constant in number every year.F) A) and B)
G) B) and E)

Question 14

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 JF) A) and C)
G) A) and B)

Question 15

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

Accepted Answer

A) True 
 B)False

Question 16

Presently,what is happening to the helium in the Sun's core?

Accepted Answer

It builds up there,f...

Question 17

The solar constant is a measure of:

Accepted Answer

A)   the energy received by the Sun on Earth's surface.
B)   the energy received by the Sun at the location of Earth.
C)   the energy received by the Sun at any location in the solar system.
D)   the energy emitted by the Sun at the photosphere.
E)   the total energy emitted by the Sun in all directions.F) B) and D)
G) B) and C)

Question 18

Which of these are NOT associated with the active Sun?

Accepted Answer

A)   sunspots
B)   prominences
C)   granulation
D)   flares
E)   auroraF) A) and B)
G) A) and C)

Question 19

A loop of gas following the magnetic field lines between sunspots' poles is:

Accepted Answer

A)   a flare.
B)   a ray.
C)   a coronal hole.
D)   a prominence.
E)   a coronal mass ejection.F) C) and D)
G) B) and D) D

Question 20

Relate prominences and sunspots to magnetic fields.

Accepted Answer

The sunspots are the cooler magnetic pol...

Exam 16: The Sun: Our Parent Star

The sunspot cycle is sometimes described as lasting 11 years,but others prefer to consider it as 22 years; explain the rationale.

Correct AnswerverifiedThe number of sunspots comes to a peak a...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

How many planet Earths could fit inside the Sun?

Correct AnswerverifiedC

What happens to most of the solar neutrinos between the Sun's core and Earth?

Correct AnswerverifiedTwo-thirds of them d...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Iron is observed in the Sun's ________.

Correct AnswerverifiedShow Answer

If the last peak in sunspot numbers occurred in 2013,then the next solar max is ________.

Correct Answerverified2024.

The percentage (by mass) of the Sun that is Hydrogen is about:

Correct AnswerverifiedShow Answer

In spite of its high temperature,we observe the solar corona best during ________.

Correct Answerverifieda total so...View AnswerShow Answer

The Sun's magnetic field has been traced out far beyond the orbit of Pluto and even Sedna.

Correct AnswerverifiedShow Answer

Apply Wein's law to explain the corona's main energy release.

Correct AnswerverifiedAt millions of degrees,most of...View AnswerShow Answer

Sunspots:

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

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

Correct AnswerverifiedShow Answer

Presently,what is happening to the helium in the Sun's core?

Correct AnswerverifiedIt builds up there,f...View AnswerShow Answer

The solar constant is a measure of:

Correct AnswerverifiedShow Answer

Which of these are NOT associated with the active Sun?

Correct AnswerverifiedShow Answer

A loop of gas following the magnetic field lines between sunspots' poles is:

Correct AnswerverifiedD

Relate prominences and sunspots to magnetic fields.

Correct AnswerverifiedThe sunspots are the cooler magnetic pol...View AnswerShow Answer

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The number of sunspots comes to a peak a...
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C

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Two-thirds of them d...
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2024.

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a total so...
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At millions of degrees,most of...
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It builds up there,f...
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D

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The sunspots are the cooler magnetic pol...
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