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## ASTR 101 Weekly Notes

1 review
by: Abigail Hills

18

1

2

# ASTR 101 Weekly Notes Astro 101

Abigail Hills
UNM
GPA 3.9

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2/19
COURSE
Astronomy 101
PROF.
Dr. Matthews
TYPE
Class Notes
PAGES
2
WORDS
CONCEPTS
astronomy
KARMA
Free

## 1

1 review
"I was sick all last week and these notes were exactly what I needed to get caught up. Cheers!"
Rowena Stamm

## Popular in Astronomy

This 2 page Class Notes was uploaded by Abigail Hills on Tuesday February 16, 2016. The Class Notes belongs to Astro 101 at University of New Mexico taught by Dr. Matthews in Spring 2016. Since its upload, it has received 18 views. For similar materials see Astronomy 101 in Astronomy at University of New Mexico.

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## Reviews for ASTR 101 Weekly Notes

I was sick all last week and these notes were exactly what I needed to get caught up. Cheers!

-Rowena Stamm

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Date Created: 02/16/16
Astronomy 101 Weekly notes 2/19/2016 I.  New Words/ Concepts: (Earth/Moon)  1. Seismic Waves:  P­waves (pressure or primary waves) : travel through fluids and  solids S­Waves (shear or secondary waves): ONLY travel through solids      2. Continental Drift:  Tectonic plates, plate boundaries, converge/diverge from upper  mantle      3. Magnetosphere: ­Van Allen Belts, solar wind influence,     II. Lecture Notes:  Earth/Tides/ Plate Tectontics   If the earth had no moons, we would have tides, we would have tides, but they  would be less intense.   The ozone layer sits at the top of the stratosphere, and shields the earth from  harmful UV Rays   Interiors of planets/moons:  o How are they discovered? Answer: Studying Seismic waves  o Seismic waves are the waves that occur from earthquakes  o Because they change speed at different layers, we can tell the location of  different layers   P­Waves:  Propegates solid and liquids  Travels like a SLINKY   S­waves  S waves cannot propegate through liquids Travels like a STRING being moved up and down  The Mantle is less dense than the earth’s Core  Convection drives the movement of plate tectonics Moon   Lunar Maria: Large dark spots on the moon­ people thought these used to be  oceans  Deep Craters   Lunar  highlands: high points on the moon   Regolith: dust that covers the surface of the moon  dust is left over from past meteorite impacts   How did the moon form?  o Collision theory: Meteorite collided with the earth­>extra material  maintained orbit w the moon  Magnetosphere   Charged particles from solar wind are trapped   know what van allen belts are  Aurora Borealis: solar wind particles interacting with the atmosphere Other Planets:  Venus orbits in retrograde motion (thumb down)  All other planets in solar system are in prograde (Thumb up)

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