Exam (elaborations)
ASTRO 1 EXAM 1 PENN STATE QUESTIONS AND ANSWERS 2024
- Course
- Institution
ASTRO 1 EXAM 1 PENN STATE QUESTIONS AND ANSWERS 2024
[Show more]
Content preview
ASTRO 1 EXAM 1 PENN STATEwhat temperature is the sun and where does the spectrum peak - ANSWERS-5800
kelvin and visible light region
what temp is room temp and where does a blackbody at room temp peak -
ANSWERS-300 kelvin and in the infrared
What kinds of radiation get through the Earth's atmosphere? - ANSWERS-visible
and radio
continuous spectrum - ANSWERS-light at all wavelengths
absorption lines - ANSWERS-dark lines in spectrum at certain
wavelengths superimposed on a continuous spectrum; produced by gas cloud in
front of light source
how are absorption lines produced - ANSWERS-produced when the electrons in
atoms absorb photons and remove light of specific energies from the spectrum.
Then the electrons move
from a lower to a higher energy level
emission lines - ANSWERS-bright lines at specific wavelengths
, due to emission of photons from a gas that has electrons in elevated levels
(excited gas)
how are emission lines formed - ANSWERS-produced when electrons jump
from higher to lower energy levels and emit photon of those specific energies
reflecting telescope - ANSWERS-concave mirror
refracting telescope - ANSWERS-convex lense
Important qualities of telescopes - ANSWERS-light gathering power, angular
resolution, and the quality of the instruments. The magnification not so
important.
how do telescopes collect light - ANSWERS-in proportion to the area of their
mirrors: Area of circle proportional to diameter squared.
Angular resolution - ANSWERS-can separate two nearby light
sources with good angular resolution = Earth's atmosphere limits angular
resolution "seeing" = makes stars twinkle
what does magnification do to the area viewed - ANSWERS-makes it smaller
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 Teacher101. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $17.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now