Limited time offer 20% OFF StudySoup Subscription details

UA - PH/AY 101 - AY 101: Exam 2 Week 6 (Part 1) Lecture Notes - Class

Created by: Olivia Carter Elite Notetaker

> > > > UA - PH/AY 101 - AY 101: Exam 2 Week 6 (Part 1) Lecture Notes - Class

UA - PH/AY 101 - AY 101: Exam 2 Week 6 (Part 1) Lecture Notes - Class

This preview shows page 1 of a 1 page document. to view the rest of the content
background image AY 101 Exam 2: Week 6   (Tues., Feb. 21  Only) - Finishing up from last week: UV light doesn’t make it through Earth’s 
atmosphere. 
I. Terrestrial Planets: Mercury, Venus, Earth, Mars
a. These planets share many similarities:
i. Made from “Terra” (dense solids like rock/metal). 1. Closer to center, more dense material. Farther from  center, less dense material. b. All terrestrial planets were molten at one point…but how do we know  this? i.  Demo: Mallet in pitcher of water. We see that because the  mallet sinks to bottom, there must have been a surface 
soft/liquid/molten enough for denser materials to sink to core of 
planets as well.
ii. We can judge the internal structure of a far-off object by  vibrations and soundwaves within the planet.  1. Think: You can tell whether a ball is solid or hollow by  judging the noise it makes when you tap on it. a. Soundwaves can travel through both liquids and  solids, but some (transverse) can only travel 
through solids.
II. Physical Processes
a. Planetary sizes influence heating and cooling. 
i. For larger planets, the heat rises faster than the cooling rate,  i.e., larger planets will cool and solidify slower than smaller 
planets.
III. The Sun & Greenhouse Effect
a. Of course, the closer a planet is to the sun, the more energy it 
receives, and the hotter surface it has.  b. In the absence of the Greenhouse Effect, Earth would be too cool to  hold liquid water. c. The Greenhouse Effect holds heat through the main Greenhouse  gasses (water vapor, CO2, methane) and raises the temperature of the
Earth, allowing us to have liquid water. 
i. Greenhouse gasses allow visible light through, but block UV  light. 

This is the end of the preview. Please to view the rest of the content
Join more than 18,000+ college students at University of Alabama - Tuscaloosa who use StudySoup to get ahead
School: University of Alabama - Tuscaloosa
Department: Astronomy
Course: AY 101 - Intro to Astronomy - Jeremy Bailin
Professor: Jeremy Bailin
Term: Spring 2015
Tags: astronomy and planets
Name: AY 101: Exam 2 Week 6 (Part 1) Lecture Notes
Description: Here are the notes from Dr. Bailin's lecture from Tuesday, Feb. 21st.
Uploaded: 02/22/2017
1 Pages 15 Views 12 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
Join StudySoup for FREE
Get Full Access to UA - AY 101 - Class Notes - Week 6
Join with Email
Already have an account? Login here
×
Log in to StudySoup
Get Full Access to UA - AY 101 - Class Notes - Week 6

Forgot password? Reset password here

Reset your password

I don't want to reset my password

Need help? Contact support

Need an Account? Is not associated with an account
Sign up
We're here to help

Having trouble accessing your account? Let us help you, contact support at +1(510) 944-1054 or support@studysoup.com

Got it, thanks!
Password Reset Request Sent An email has been sent to the email address associated to your account. Follow the link in the email to reset your password. If you're having trouble finding our email please check your spam folder
Got it, thanks!
Already have an Account? Is already in use
Log in
Incorrect Password The password used to log in with this account is incorrect
Try Again

Forgot password? Reset it here