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Astro 7N exam 2 The Sun; Questions with Complete Solutions 100% Verified $9.99   Add to cart

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Astro 7N exam 2 The Sun; Questions with Complete Solutions 100% Verified

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Astro 7N exam 2 The Sun; Questions with Complete Solutions 100% Verified what is the sun mostly made of? Correct answer-gas true or false the sun is stable due to balance of gravity and gas pressure in its hot interior Correct answer-true how hot is the sun? Correct answer-15 million degre...

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  • August 9, 2024
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  • Astro 7n
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Astro 7N exam 2 The Sun; Questions with Complete
Solutions 100% Verified
what is the sun mostly made of? Correct answer-gas




true or false the sun is stable due to balance of gravity and gas pressure in its hot interior
Correct answer-true




how hot is the sun? Correct answer-15 million degrees kelvin




what is the sun diameter? Correct answer-109Xearth




what is the sun mass? Correct answer-333,000xEarth




what is the sun luminosity equal to? Correct answer-4x10^24 100 Watt light bulbs




how much of all of the made of the solar system in in the sun? Correct answer-99.9%




how long has the sun been shining, and how much longer will it shine? Correct answer-
4.5 billion

5.5 billion




are slightly-cooler regions on the Sun's surface due to magnetic activity

, Astro 7N exam 2 The Sun; Questions with Complete
Solutions 100% Verified
preventing hot material from rising in that region; have 11 year cycles Correct answer-
sunspots




a long last source of energy in the stars Correct answer-nuclear fusion




what is nuclear fusion made of? Correct answer-4 protons combine to make helium 4 and
release energy in gamma rays




a fusion process in which protons build together to form helium Correct answer-proton
proton chain




the energy output from the [p chain comes from Correct answer-E=mc2




true or false the mass of a helium-4 nucleus is less than the mass of 4 protons Correct
answer-true




at the center; high density and temperature; where nuclear reactions occur

and gamma rays are produced Correct answer-core




photons are repeatedly re-absorbed and re-emitted; the energy of

an individual photon can take on average 170,000 years to pass through Correct answer-
radiative zone

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