Question 1

The surface magnetic field of the Sun is found by measurement of the extra width in spectral lines due to the ________ Effect.

Accepted Answer

The answer of The surface magnetic field of the Sun...

Question 2

During a period of high solar activity,the corona:

Accepted Answer

A)   disappears.
B)   is more irregular.
C)   cools almost to the temperature of the photosphere.
D)   becomes smooth and even.
E)   shrinks to half its normal size.

Question 3

In the proton-proton cycle,you must first make deuterium,then helium.

Accepted Answer

A) True 
 B)False

Question 4

The density of the Sun is most similar to which object?

Accepted Answer

A)   Halley's Comet's nucleus
B)   the Earth
C)   Mercury
D)   the Moon
E)   Jupiter

Question 5

We know the Sun rotates differentially by observing sunspots; as with Jupiter the solar equator rotates the fastest.

Accepted Answer

A) True 
 B)False

Question 6

The most striking example of solar variability was:

Accepted Answer

A)   the Dust Bowl drought of the 1930s.
B)   the Maunder Minimum from 1645-1715.
C)   the Sporer Minimum that doomed the Anasazi.
D)   the fall of Rome.
E)   Joseph's seven lean years in the Old Testament.

Question 7

What was the Maunder Minimum?

Accepted Answer

A period of unusually low solar activity...

Question 8

The solar corona is much cooler than the Sun's surface; hence we must wait for a total solar eclipse to glimpse it with the naked eye.

Accepted Answer

A) True 
 B)False

Question 9

In the proton-proton cycle,the helium atom and neutrino have less mass than the original hydrogen.What happens to the "lost" mass?

Accepted Answer

A)   It is recycled back into hydrogen.
B)   It is ejected into space.
C)   It is converted to energy.
D)   It is transformed into electrons.
E)   Conservation of mass dictates no mass can be lost.

Question 10

A solar flare creates a radio disturbance on Earth a few minutes after going off and again several days later.Explain.

Accepted Answer

A flare will give off intense X-rays and...

Question 11

What is it about the Sun's corona that astronomers don't understand?

Accepted Answer

A)   No one knows why that part of the Sun's atmosphere does not drift away into space.
B)   During total solar eclipses, the corona sometimes disappears from view.
C)   The corona seems to absorb 2/3 of the neutrinos that pass through it.
D)   The corona is much hotter than layers of the Sun that are closer to the solar interior.
E)   The Sun's corona extends to the outer reaches of the solar system.

Question 12

Large circulation patterns in the Sun,dubbed "Conveyor Belts," transport material from the equator to the poles,then back to the equator at a depth of 300,000 km,take how long to complete a cycle?

Accepted Answer

A)   Less than a day
B)   A few years
C)   A few decades
D)   A few centuries
E)   Tens of millions of years, comparable to the convection cycle in Earth's mantle

Question 13

The luminosity of the Sun 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.

Question 14

Prominences hanging off the limb of the Sun are the same as filaments seen in front of the disk.

Accepted Answer

A) True 
 B)False

Question 15

How long does the sunspot cycle last,on average?

Accepted Answer

A)   between 25 and 35 days
B)   365.25 days
C)   about seven years
D)   about 11 years
E)   about 76 years

Question 16

The pattern of rising hot gas cells all over the photosphere is called:

Accepted Answer

A)   filaments.
B)   granulation.
C)   sunspots.
D)   convective projections.
E)   prominences.

Question 17

What do sunspots tell us about the Sun's rotation rate?

Accepted Answer

Watching and timing sunspots as they tra...

Question 18

If the corona is so hot,why must we wait for a total solar eclipse to glimpse it?

Accepted Answer

It is so hot that almost all the energy ...

Question 19

The number of sunspots and their activity peak about every:

Accepted Answer

A)   36 days.
B)   six months.
C)   year.
D)   eleven years.
E)   76 years.

Question 20

Scientists suspect changes in the flow of the Sun's Conveyor Belt caused the Sun to be less active in 2008 and 2009 than had been seen in almost 100 years.

Accepted Answer

A) True 
 B)False

Exam 16: The Sun: Our Parent Star

A solar flare creates a radio disturbance on Earth a few minutes after going off and again several days later.Explain.

Correct AnswerverifiedA flare will give off intense X-rays and...View AnswerShow Answer

We know the Sun rotates differentially by observing sunspots; as with Jupiter the solar equator rotates the fastest.

Correct AnswerverifiedShow Answer

The surface magnetic field of the Sun is found by measurement of the extra width in spectral lines due to the ________ Effect.

Correct AnswerverifiedShow Answer

In the proton-proton cycle,the helium atom and neutrino have less mass than the original hydrogen.What happens to the "lost" mass?

Correct AnswerverifiedShow Answer

If the corona is so hot,why must we wait for a total solar eclipse to glimpse it?

Correct AnswerverifiedIt is so hot that almost all the energy ...View AnswerShow Answer

Prominences hanging off the limb of the Sun are the same as filaments seen in front of the disk.

Correct AnswerverifiedShow Answer

The solar corona is much cooler than the Sun's surface; hence we must wait for a total solar eclipse to glimpse it with the naked eye.

Correct AnswerverifiedShow Answer

The pattern of rising hot gas cells all over the photosphere is called:

Correct AnswerverifiedShow Answer

The number of sunspots and their activity peak about every:

Correct AnswerverifiedShow Answer

The most striking example of solar variability was:

Correct AnswerverifiedShow Answer

How long does the sunspot cycle last,on average?

Correct AnswerverifiedShow Answer

In the proton-proton cycle,you must first make deuterium,then helium.

Correct AnswerverifiedShow Answer

Scientists suspect changes in the flow of the Sun's Conveyor Belt caused the Sun to be less active in 2008 and 2009 than had been seen in almost 100 years.

Correct AnswerverifiedShow Answer

What is it about the Sun's corona that astronomers don't understand?

Correct AnswerverifiedShow Answer

During a period of high solar activity,the corona:

Correct AnswerverifiedShow Answer

What was the Maunder Minimum?

Correct AnswerverifiedA period of unusually low solar activity...View AnswerShow Answer

The density of the Sun is most similar to which object?

Correct AnswerverifiedShow Answer

What do sunspots tell us about the Sun's rotation rate?

Correct AnswerverifiedWatching and timing sunspots as they tra...View AnswerShow Answer

Large circulation patterns in the Sun,dubbed "Conveyor Belts," transport material from the equator to the poles,then back to the equator at a depth of 300,000 km,take how long to complete a cycle?

Correct AnswerverifiedShow Answer

The luminosity of the Sun is a measure of:

Correct AnswerverifiedShow Answer

Correct Answer
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A flare will give off intense X-rays and...
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It is so hot that almost all the energy ...
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A period of unusually low solar activity...
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Watching and timing sunspots as they tra...
View Answer

Correct Answer
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Correct Answer
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