Question 1

The solar neutrino experiment designed by Raymond Davis has detected a rate of solar neutrinos arriving at Earth that is:

Accepted Answer

A) about 1/3 of the predicted rate. 
B) almost exactly equal to the predicted rate. 
C) less than 1% of the predicted rate. 
D) almost double the predicted rate. 
A) about 1/3 of the predicted rate. 
B) almost exactly equal to the predicted rate. 
C) less than 1% of the predicted rate. 
D) almost double the predicted rate.

Question 2

Why was "heavy" water used in the Sudbury Neutrino Observatory instead of ordinary water?

Accepted Answer

A) It is cheaper. 
B) Since it is more dense, the required weight can be obtained in a smaller volume. 
C) Each nucleus contains a neutron as well as a proton. Heavy water is thus a good source of neutrons. 
D) Neutrons convert the "heavy" hydrogen in heavy water into helium. 
A) It is cheaper. 
B) Since it is more dense, the required weight can be obtained in a smaller volume. 
C) Each nucleus contains a neutron as well as a proton. Heavy water is thus a good source of neutrons. 
D) Neutrons convert the "heavy" hydrogen in heavy water into helium.

Question 3

The study of solar oscillations has provided information about each of the following topics EXCEPT ONE. Which one is the EXCEPTION?

Accepted Answer

A) the amount of helium in the Sun's core 
B) the explanation for the solar neutrino problem 
C) the thickness of the transition region between the radiation zone and the convection zone 
D) the thickness of the convective zone 
A) the amount of helium in the Sun's core 
B) the explanation for the solar neutrino problem 
C) the thickness of the transition region between the radiation zone and the convection zone 
D) the thickness of the convective zone

Question 4

What is the lifetime of a typical sunspot?

Accepted Answer

A) from a few hours to a few months 
B) from a few years to a few decades 
C) 11 years 
D) Here today, gone tomorrow! 
A) from a few hours to a few months 
B) from a few years to a few decades 
C) 11 years 
D) Here today, gone tomorrow!

Question 5

Figure 16-15 of Universe, 11th ed., shows images of the Sun at different wavelengths that correspond to different temperatures. What relationship between wavelength and temperature is being used here?
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Accepted Answer

A) the Doppler shift 
B) Wien's law 
C) the Stefan-Boltzmann law 
D) Kirchhoff's laws 
A) the Doppler shift 
B) Wien's law 
C) the Stefan-Boltzmann law 
D) Kirchhoff's laws

Question 6

Which technique has been used since the 1960s to attempt to measure solar neutrinos?

Accepted Answer

A) measuring the interaction of neutrinos with water molecules in huge underground tanks 
B) production of radioactive argon nuclei by neutrino interaction with chlorine nuclei in deep underground tanks 
C) measuring the proton-proton reaction in liquid hydrogen, where neutrinos play an intermediate role 
D) measuring the interactions of neutrinos with radioactive argon nuclei producing chlorine nuclei that can be measured chemically 
A) measuring the interaction of neutrinos with water molecules in huge underground tanks 
B) production of radioactive argon nuclei by neutrino interaction with chlorine nuclei in deep underground tanks 
C) measuring the proton-proton reaction in liquid hydrogen, where neutrinos play an intermediate role 
D) measuring the interactions of neutrinos with radioactive argon nuclei producing chlorine nuclei that can be measured chemically

Question 7

If the Sun were the same temperature but twice its present diameter, the amount of energy we would receive would:

Accepted Answer

A) remain the same. 
B) double. 
C) increase by a factor of four. 
D) increase by a factor of 16. 
A) remain the same. 
B) double. 
C) increase by a factor of four. 
D) increase by a factor of 16.

Question 8

Apart from the helium nuclei and energy that are produced in thermonuclear reactions between protons in the center of the Sun, what are the other byproducts?

Accepted Answer

A) gamma rays, negative electrons, and neutrinos 
B) positive electrons (positrons), gamma rays, and neutrinos 
C) gamma rays and neutrinos 
D) protons, neutrinos, and negative electrons 
A) gamma rays, negative electrons, and neutrinos 
B) positive electrons (positrons), gamma rays, and neutrinos 
C) gamma rays and neutrinos 
D) protons, neutrinos, and negative electrons

The solar neutrino experiment designed by Raymond Davis has detected a rate of solar neutrinos arriving at Earth that is:

Why was "heavy" water used in the Sudbury Neutrino Observatory instead of ordinary water?

The study of solar oscillations has provided information about each of the following topics EXCEPT ONE. Which one is the EXCEPTION?

What is the lifetime of a typical sunspot?

Figure 16-15 of Universe, 11th ed., shows images of the Sun at different wavelengths that correspond to different temperatures. What relationship between wavelength and temperature is being used here?

Which technique has been used since the 1960s to attempt to measure solar neutrinos?

If the Sun were the same temperature but twice its present diameter, the amount of energy we would receive would:

Apart from the helium nuclei and energy that are produced in thermonuclear reactions between protons in the center of the Sun, what are the other byproducts?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Jupiter and Saturns Satellites of Fire and Ice

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Galaxies

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters

Exam 16: Our Star, the Sun

The solar neutrino experiment designed by Raymond Davis has detected a rate of solar neutrinos arriving at Earth that is:

Why was "heavy" water used in the Sudbury Neutrino Observatory instead of ordinary water?

The study of solar oscillations has provided information about each of the following topics EXCEPT ONE. Which one is the EXCEPTION?

What is the lifetime of a typical sunspot?

Figure 16-15 of Universe, 11th ed., shows images of the Sun at different wavelengths that correspond to different temperatures. What relationship between wavelength and temperature is being used here? ​ ​

Which technique has been used since the 1960s to attempt to measure solar neutrinos?

If the Sun were the same temperature but twice its present diameter, the amount of energy we would receive would:

Apart from the helium nuclei and energy that are produced in thermonuclear reactions between protons in the center of the Sun, what are the other byproducts?

Astronomy and the Universe

Knowing the Heavens

Eclipses and the Motion of the Moon

Gravitation and the Waltz of the Planets

The Nature of Light

Optics and Telescopes

Comparative Planetology I: Our Solar System

Comparative Planetology II: the Origin of Our Solar System

The Living Earth

Our Barren Moon

Mercury, Venus, and Mars: Terrestrial, yet Unique

Jupiter and Saturn: Lords of the Planets

Jupiter and Saturns Satellites of Fire and Ice

Uranus, Neptune, Pluto, and the Kuiper Belt: Remote Worlds

Asteroids, Comets, and Impacts

The Nature of the Stars

The Birth of Stars

Stellar Evolution: on and After the Main Sequence

Stellar Evolution: The Death of Stars

Stellar Remnants: Neutron Stars and Black Holes

Our Galaxy

Galaxies

Quasars and Active Galaxies

Cosmology: The Origin and Evolution of the Universe

Exploring the Early Universe

The Search for Extraterrestrial Life

Filters

Figure 16-15 of Universe, 11th ed., shows images of the Sun at different wavelengths that correspond to different temperatures. What relationship between wavelength and temperature is being used here?