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Powerpoint Presentation (large file)
Powerpoint Presentation (large file)

... universe! • By comparison there are about 0.0000005 protons per cm3 in the universe. ...
Inner and Outer Planets
Inner and Outer Planets

... ...
capitolo 1 - Altervista
capitolo 1 - Altervista

... sun. Venus has a thick atmosphere and nothing could survive on his hot and poisonous surface. Mars is a lot colder than the Earth. There are also four giants planets: Jupiter Saturn Uranus and Neptune. Each of these planets is made from gas. If you landed on one of these you would sink into it. The ...
4 The Sun
4 The Sun

Week 3 - Emerson Valley School
Week 3 - Emerson Valley School

... Our planet Earth is part of a solar system that consists of eight planets orbiting a giant, fiery star we call the sun. For thousands of years, astronomers have studied the movements of the planets across our solar system. These spherical bodies march across the sky in a predictable way: the length ...
29.1-homework - Stout Middle School
29.1-homework - Stout Middle School

... 1 million to 2 million °K (1,799,540°F to 3,599,540°F). Gas flows outward from this layer at high speeds and forms the (8) _________________________________________________. It is made up of charged particles, or (9) ____________________________, which flow outward through the entire solar system. M ...
Slide 1
Slide 1

... …mysterious black lines in the sun’s spectrum… ...
Solution to Problem Set 1 1. The total number of nucleons in one
Solution to Problem Set 1 1. The total number of nucleons in one

Space Science Overview
Space Science Overview

... core sunspots photosphere solar flares 1. The ____________________ is often called the surface of the sun. 2. Fusion takes place in the sun’s ____________________ 3. ____________________ can affect radio communications on Earth. 4. Because they are cooler than surrounding regions, __________________ ...
Name Date_____________________________________
Name Date_____________________________________

PPT
PPT

Astro-Spectroscpy
Astro-Spectroscpy

... Though the surface temperature of the Sun is 5,770 degrees Kelvin, the Sun is surrounded by very hot gas in the solar corona at more than a million degrees. Solar flares and coronal mass ejections (CMEs) frequently erupt from the Sun emitting intense radiation and charged particles. ...
No Slide Title
No Slide Title

... solar system. • It is a huge ball of hot gases (mostly hydrogen and helium). • It is a star (an object that produces its own energy). ...
Midterm 3 Review Sessions Two choices:
Midterm 3 Review Sessions Two choices:

... • Each point inside the Sun stays at a fixed temperature. • How energy generation rate depends on density, temperature, composition. • How energy is carried outwards. For every point in the Sun, we can then compute: • temperature • pressure • density • composition • energy generation • energy transp ...
Homework problems for Quiz 2: AY5 Spring 2015
Homework problems for Quiz 2: AY5 Spring 2015

Planets and the Sun How Do We Size Up?
Planets and the Sun How Do We Size Up?

Review-Sheet-sun-solar-system-galaxies-and-cosmology-fall
Review-Sheet-sun-solar-system-galaxies-and-cosmology-fall

... 1. What are the three layers of the sun’s interior? What part is responsible for fusion? 2. What are the three layers of the Sun’s atmosphere? Be able to describe them briefly, such as lowest layer, the visible surface, etc… 3. What is the solar wind? What happens when the solar wind gets trapped in ...
Unit 9 Day 9 Notes
Unit 9 Day 9 Notes

...  Tiny grains of condensed material began to accumulate and merge to form larger bodies then collide and stick together  Eventually these bodies reached hundreds of kilometers in diameter and are called planetesimals that continued to grow through collisions with other objects ...
The Sun
The Sun

Document
Document

... Explain the Hertzsprung-Russell diagram of star clusters Match the observed characteristics of the Sun (mass, radius, luminosity, age, …) Describe the evolutionary sequence from a proto-star to the present day Sun ...
Structure of the Sun, our nearest star
Structure of the Sun, our nearest star

... o Coronal mass ejections can carry up to 10 billion tons of plasma traveling at speeds as high as 2000 km/s. o Near solar maximum we observe an average of 2 to 3 CMEs per day o Thought to arise when the sun’s magnetic fields suddenly rearrange, releasing an enormous bubble of matter ...
the solar system
the solar system

... Learning outcome: ...
Homework #3
Homework #3

Most Basic Observations Of the Sun
Most Basic Observations Of the Sun

... center of the Sun using the Gas pressure term alone and using the value for pressure we derived in the previous example. ...
Astronomy Solar System Formation Sun and Stellar Evolution
Astronomy Solar System Formation Sun and Stellar Evolution

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Standard solar model

The standard solar model (SSM) is a mathematical treatment of the Sun as a spherical ball of gas (in varying states of ionisation, with the hydrogen in the deep interior being a completely ionised plasma). This model, technically the spherically symmetric quasi-static model of a star, has stellar structure described by several differential equations derived from basic physical principles. The model is constrained by boundary conditions, namely the luminosity, radius, age and composition of the Sun, which are well determined. The age of the Sun cannot be measured directly; one way to estimate it is from the age of the oldest meteorites, and models of the evolution of the Solar System. The composition in the photosphere of the modern-day Sun, by mass, is 74.9% hydrogen and 23.8% helium. All heavier elements, called metals in astronomy, account for less than 2 percent of the mass. The SSM is used to test the validity of stellar evolution theory. In fact, the only way to determine the two free parameters of the stellar evolution model, the helium abundance and the mixing length parameter (used to model convection in the Sun), are to adjust the SSM to ""fit"" the observed Sun.
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