Exam (elaborations)
Astro 7N exam 2 The Sun (Answered). 100% correct. Updated 2024/2025.
- Course
- Institution
Astro 7N exam 2 The Sun (Answered). 100% correct. Updated 2024/2025.
[Show more]
Content preview
Astro 7N exam 2 The Sun (Answered).100% correct. Updated 2024/2025.
what is the sun mostly made of?
gas
true or false the sun is stable due to balance of gravity and gas pressure in its hot interior
true
how hot is the sun?
15 million degrees kelvin
what is the sun diameter?
109Xearth
what is the sun mass?
333,000xEarth
what is the sun luminosity equal to?
4x10^24 100 Watt light bulbs
how much of all of the made of the solar system in in the sun?
99.9%
how long has the sun been shining, and how much longer will it shine?
4.5 billion
5.5 billion
are slightly-cooler regions on the Sun's surface due to magnetic activity
preventing hot material from rising in that region; have 11 year cycles
sunspots
a long last source of energy in the stars
nuclear fusion
what is nuclear fusion made of?
4 protons combine to make helium 4 and release energy in gamma rays
a fusion process in which protons build together to form helium
proton proton chain
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StudyHubSolutions. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73243 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now