Question 1

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 2

The ________-year solar cycle is characterized by a variation in the number of sunspots and a reversal of the polarity of the Sun as a whole.

Accepted Answer

The answer of The ________-year solar cycle is characterized by...

Question 3

The most striking example of solar variability was the

Accepted Answer

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

Question 4

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 5

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

Accepted Answer

A) True 
 B)False

Question 6

Hydrostatic equilibrium in our Sun is the balance between

Accepted Answer

A)   convection and radiation.
B)   convection and gravitation.
C)   pressure and radiation.
D)   radiation and gravitation.
E)   gravitation and pressure.

Question 7

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 8

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 9

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

Accepted Answer

It builds up there, ...

Question 10

The solar magnetic field is strongest in those regions called ________, which are poles and usually thus occur in pairs.

Accepted Answer

The answer of The solar magnetic field is strongest in...

Question 11

Studies by the Global Oscillations Network Group, along with satellite observations, indicate

Accepted Answer

A)   that the standard solar model requires substantial modification.
B)   that all stars show the same kind of vibrations that our Sun does.
C)   that there is an unknown energy transport mechanism in the Sun.
D)   that there is less convection in the Sun than predicted by the standard solar model.
E)   that the standard solar model accurately models the observed solar vibrations.

Question 12

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

Accepted Answer

Watching and timing sunspots as they tra...

Question 13

When the chromosphere can be seen during a solar eclipse, it appears

Accepted Answer

A)   invisible.
B)   violet.
C)   blue.
D)   yellow.
E)   red.

Question 14

Why is it hard to observe the chromosphere?

Accepted Answer

Most of its energy is in the b...

Question 15

The temperature of the layer of gas that produces the visible light of the Sun is

Accepted Answer

A)   3,500 K
B)   5,800 K
C)   12,300 K
D)   300,000 K
E)   15 million K

Question 16

-The above diagram indicates that

Accepted Answer

A)   the Sun is hottest somewhere between its surface and its core.
B)   the Sun is coolest somewhere between its surface and its core.
C)   the Sun is hotter at its surface than at its core.
D)   the Sun is hotter at its core than at its surface.
E)   the Sun has about the same temperature throughout its interior.

Question 17

The energy of the Sun starts as radiation, but is actually transported to its surface by convection, where it is radiated off into space at last.

Accepted Answer

A) True 
 B)False

Question 18

On the Sun, what takes approximately 22 years to happen?

Accepted Answer

A)   The Sun takes that time to rotate on its axis.
B)   The complete sunspot cycle, including magnetic field reversals.
C)   Solar vibrations begin every 22 years.
D)   Solar activities goes from its maximum to minimum.
E)   The corona reaches its maximum temperature and ejects gas every 22 years.

Question 19

Which is the net result of the proton-proton chain?

Accepted Answer

A)   4 protons = 1 helium 4 + a positron + a neutrino + gamma rays
B)   2 protons = deuterium + a positron + an antineutrino + X-rays
C)   4 protons = 2 heliums 2 + 2 positrons + ultraviolet radiation
D)   4 protons = 1 helium 4 + 2 neutrinos + gamma rays
E)   6 protons = 2 heliums + 3 positrons + 3 neutrinos + gamma rays

Question 20

Initially, fewer neutrinos were detected than predicted by theoretical models because

Accepted Answer

A)   neutrinos changed form to undetected types of neutrinos.
B)   the wrong liquid was being used in neutrino detectors.
C)   particle physicists did not understand the proton-proton chain.
D)   the proton-proton chain does not actually produce neutrinos.
E)   neutrinos take many years to pass out of the sun from its core.

Exam 8: The Sun

The most striking example of solar variability was the

Correct AnswerverifiedShow Answer

On the Sun, what takes approximately 22 years to happen?

Correct AnswerverifiedShow Answer

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

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

When the chromosphere can be seen during a solar eclipse, it appears

Correct AnswerverifiedShow Answer

The luminosity of the Sun is a measure of

Correct AnswerverifiedShow Answer

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

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

The energy of the Sun starts as radiation, but is actually transported to its surface by convection, where it is radiated off into space at last.

Correct AnswerverifiedShow Answer

Which is the net result of the proton-proton chain?

Correct AnswerverifiedShow Answer

Why is it hard to observe the chromosphere?

Correct AnswerverifiedMost of its energy is in the b...View AnswerShow Answer

Studies by the Global Oscillations Network Group, along with satellite observations, indicate

Correct AnswerverifiedShow Answer

Hydrostatic equilibrium in our Sun is the balance between

Correct AnswerverifiedShow Answer

-The above diagram indicates that

Correct AnswerverifiedShow Answer

How long does the sunspot cycle last, on average?

Correct AnswerverifiedShow Answer

Initially, fewer neutrinos were detected than predicted by theoretical models because

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The solar magnetic field is strongest in those regions called ________, which are poles and usually thus occur in pairs.

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

The temperature of the layer of gas that produces the visible light of the Sun is

Correct AnswerverifiedShow Answer

The ________-year solar cycle is characterized by a variation in the number of sunspots and a reversal of the polarity of the Sun as a whole.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Watching and timing sunspots as they tra...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
It builds up there, ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Most of its energy is in the b...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified