DOC PREVIEW
IUPUI AST 105 - Sun Layers Features Kelvin

This preview shows page 1 out of 3 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 3 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

AST 105 1st Edition Lecture 2Outline of Last Lecture I. Numbersa. Names for Large Powersb. Mass of Electron II. The Largest Object in the Solar (the Sun) a. Characteristics & Composition b. Differential Rotation III. Temperature Scale NamesOutline of Current Lecture (Lecture 2) I. Kelvin and Helmholtza. Kelvin Scaleb. Joules c. Chemical Reactions and the Sun II. Sun’s Atmosphere a. 3 layersb. Surface Features c. Magnetic Fieldsd. Other FeaturesIII. Galileo Kelvin and Helmholtz - Suggested that gravitational collapse produced chemical reactions  Gives off energy (heat) - A chemical reaction gives off about 10-19 joules of energy per atom - Joules = Watt x Second- Joules = energy- Watts = power- Second = time - Sun has about 1057 atoms  3.9x1026 watts  10-19 Joules (watts) per second / atoms= 3.9x1045 atoms/second10 57 atoms 3.9x1045atoms/seconds = 3x1011 seconds  10,000 years (as 1 yr=3x107 seconds)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Thus, the sun would only burn for 10,000 years if it’s energy was just chemical reactions “But the sun has been around for waaaaay longer than 10,000 years.”- Fossil record on Earth shows life for 3.5 Billion years- Thus, chemical reactions cannot be the source of the suns energyo Kelvin and Helmholtz’s theory that chemical reactions are the source of the suns energy, is false. Kelvin Scale - Absolute temp. scale- 0 kelvin  all motion of the particle ceases  can never exactly achieve this but can get closeSun’s Atmosphere- Photosphere 5,800 K gives off visible light - Chromosphere 10,000 K gives off ultra violet- Corona Approaches 106 K Gives off mostly X-raysSurface Features of the Sun - Granules are convection cells- Sun spots are dark and cooler spots on the sun’s surface 4500 K 11 year cycle of sun spot activity - a magnetic field is located where the sun spots are- filaments – dark streaks created by arching magnetic field lines- prominences – filaments viewed on edge Magnetic Fields- located where sunspots- can produce a force on a charged particlePicture taken from EducationPortal.com found via Google Image searchGalileo - “first person to really identify sun spots”- First to determine the rotation of the sun (via


View Full Document

IUPUI AST 105 - Sun Layers Features Kelvin

Download Sun Layers Features Kelvin
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Sun Layers Features Kelvin and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Sun Layers Features Kelvin 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?