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Astronomy The Solar System

Physics & Astronomy

Quiz 14 :

Our Starthe Sun

Quiz 14 :

Our Starthe Sun

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If the Sun was not currently in hydrostatic equilibrium, we would see
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C

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What do astronomers mean when they say that the Sun makes energy by hydrogen burning?
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D

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The figure below illustrates the proton-proton chain.How many gamma rays are produced for each helium (4He) nucleus created? img
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D

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Why is hydrogen burning the main energy source for main-sequence stars?
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Because the Sun is in hydrostatic equilibrium, the correct order of the inner layers by density, from most dense to least dense, is
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Density, temperature, and pressure increase as you move inward in the interior of the Sun.This means that the weight of the star pushing inward at a given radius ________ as you move toward the core.
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Which force is responsible for holding the protons and neutrons in the nucleus of an atom together?
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If the core of the Sun were hotter than it is now, how would the Sun's energy production change?
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Where does hydrostatic equilibrium exist in the Sun?
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What is the approximate temperature at the center of the Sun?
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Suppose by some mysterious process the nuclear fusion rate in the core of the Sun were to increase.What would certainly happen to the appearance of the Sun?
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Each helium atom created through the proton-proton chain, illustrated in the figure below, is made up of two protons and two neutrons.How many neutrons and protons are required as inputs to the proton-proton chain? img
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The majority of the Sun's energy comes from
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Hydrostatic equilibrium is a balance between
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When two atomic nuclei come together to form a new species of atom, this is called
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In the proton-proton chain, pictured in the figure below, what happens to the emitted gamma rays? img
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The net result of the proton-proton chain of nuclear reactions is that four protons are converted into
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The net effect of the proton-proton chain is that four hydrogen nuclei are converted to one helium nucleus and ________ are released.
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The balance of energy in the solar interior means that
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The energy that fuels the Sun is generated
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