Class Notes (922,992)
CA (543,021)
UTSG (45,883)
AST (668)
AST101H1 (417)
Lecture

9.1-Connecting Planetary Interiors and Surfaces

3 Pages
145 Views

Department
Astronomy & Astrophysics
Course Code
AST101H1
Professor
C.B.Netterfield

This preview shows page 1. Sign up to view the full 3 pages of the document.
CHAPTER NINE: PLANETARY GEOLOGY
9.1 Connecting Planetary Interiors and Surfaces
-the great differences in the present day appearance of the 5 terrestrial planets must be the result of
changes that have occurred through time
-volcanoes, earthquakes, asteroid or comets slamming into Earth, erosion by wind rain or ice, etc.
-Mercury and Moon Æ scars of their battering during the heavy bombardment
Ædensely covered by craters
-Venus Æ bizarre bulges and odd volcanoes dot the surface of Venus
-Mars Æ has the solar system·s largest volcanoes and a huge canyon
Æ numerous features that appear to have been shaped by running water
-Earth Æ similar to all those on the other terrestrial worlds including a unique layer of living organisms
that covers almost the entire surface
Inside of Terrestrial Planets
-our most detailed information comes from seismic waves, vibrations that travel both through Earth·s
interior and along its surface after an earthquake
Layering by Density
-Core Æ the highest-density material
Æ consists primarily of metals such as nickel and iron
Æ resides in the centre of the core
Æ consists of two distinct regions; a solid inner core and a molten outer core
-Mantle Æ rocky material of moderate density
Æ mostly minerals that contain silicon, oxygen and other elements
Æ forms thick mantle that surrounds the core
-Crust Æ the lowest-density rock, granite and basalt
Æ forms the thin crust, essentially representing the world·s outer skin
-Mercury has a large core
Æformed in the region of the solar nebula where the planetesimals should have been most metal-
rich
Æ may have also suffered a giant impact that blasted away much of its original mantle and crust
-Moon has a small core
Æa small core is expected if the Moon really did form from debris blasted out of Earth·s outer
layers since that debris would have contained very little high-density metal
-all worlds underwent differentiation at some time in the past, which means all these worlds must once
have been hot enough inside for the interior rock and meta to melt and separate by density
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
CHAPTER NINE: PLANETARY GEOLOGY 9.1 Connecting Planetary Interiors and Surfaces -the great differences in the present day appearance of the 5 terrestrial planets must be the result of changes that have occurred through time -volcanoes, earthquakes, asteroid or comets slamming into Earth, erosion by wind rain or ice, etc. -Mercury and Moon scars of their battering during the heavy bombardment densely covered by craters -Venus bizarre bulges and odd volcanoes dot the surface of Venus -Mars has the solar systems largest volcanoes and a huge canyon numerous features that appear to have been shaped by running water -Earth similar to all those on the other terrestrial worlds including a unique layer of living organisms that covers almost the entire surface Inside of Terrestrial Planets -our most detailed information comes from seismic waves, vibrations that travel both through Earths interior and along its surface after an earthquake Layering by Density -Core the highest-density material consists primarily of metals such as nickel and iron resides
More Less
Unlock Document


Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit