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Extreme Stars
Extreme Stars

Solar System Survey
Solar System Survey

...  Pluto and similar objects don’t fit either planet family  Astronomers have discovered more than 200 objects like Pluto orbiting the Sun  In 2006, a new family was introduced – the dwarf planets  Massive enough to pull themselves spherical  Orbits have not been swept clear of debris ...
Homework Solutions Chapter 4
Homework Solutions Chapter 4

Name
Name

... The gravitational pull between then will decrease. 3. How are an object’s mass and gravity related? The more mass an object has, the stronger it’s gravity. 4. Explain the life cycle of our sun starting with its formation to its death. Be sure to use the following terms: nebula, main sequence, white ...
Teacher`s notes
Teacher`s notes

... distances used in this activity represent the average distance of the planet from the Sun. Once the students are familiar with the planets they can make the scale model to show just how far apart they are. Each group of students needs to start by drawing and labelling the Sun on the toilet paper. Do ...
charts_set_6
charts_set_6

... Mass of end products is less than mass of 4 protons by 0.7%. Mass converted to energy. 600 million tons per second fused. Takes billions of years to convert p's to 4He in Sun's core. Process sets lifetime of stars. ...
Lecture101602
Lecture101602

... effects of gravity Use binary star systems ...
The Dynamic Earth and Space Geodesy, SC/EATS 1010
The Dynamic Earth and Space Geodesy, SC/EATS 1010

... 2. A Protostar forms in the centre, when the core becomes dense enough; later will become the Sun. 3. Dust grains stick to each other and sweep their paths, forming larger particles (Planetesimals). 4. Orbital paths are cleared. 5. The Sun and its planets all spin in the same direction. ...
The Sun - Centra
The Sun - Centra

Distance between the Planets
Distance between the Planets

... 8. Give the remaining students a pebble and have them form an asteroid belt between Mars and Jupiter. Explain that asteroids are small bits of rock. 9. Ask the students to make observations about their solar system model. 10. Now have each of the “planets” start orbiting the “Sun,” moving simultaneo ...
Name - MIT
Name - MIT

... 35) How was the Homestake Gold Mine used to detect neutrinos? A) The Gold in the mine tends to react with the neutrinos and become radioactive. This radioactivity could be measured B) The mine contains water that undergoes fusion when neutrinos strike it. The resulting heat could be measured C) The ...
1-1 Origin of the Earth Motion NOTES blanks
1-1 Origin of the Earth Motion NOTES blanks

... All the planets, as well as most of their moons, also called ____________, orbit the Sun in the same direction, and all their orbits, except Pluto’s, lie near the same plane. ...
GEARS Workshop Monday - Georgia Southern University
GEARS Workshop Monday - Georgia Southern University

... Units/2-StellarEvolution/2Stars_7.html • Compare main sequence lifetimes, end states. ...
Astrophysics 12 - Stellar Evolution
Astrophysics 12 - Stellar Evolution

... When the helium runs out, the carbon-oxygen core contracts again  shell helium “burning”. For stars with mass similar to the of the Sun, the carbon-oxygen core isn’t hot enough for fusion. The core continues to contract until electrons exert enough pressure to stop it collapsing ...
Useful equations - Department of Physics and Astronomy
Useful equations - Department of Physics and Astronomy

Journey to the Stars: Activities for Grades 6-8
Journey to the Stars: Activities for Grades 6-8

⎯10 Sep Motions in the sky
⎯10 Sep Motions in the sky

... The sun sets south of west in winter. Winter days are short. Stars move east to west over a night. The constellations change over the months. The sun (and moon and stars) rises & sets. The sun is higher in the sky in summer than ...
8-12 февраля 2010 г., ИКИ РАН
8-12 февраля 2010 г., ИКИ РАН

... velocity can be not uniquely decided in the framework of this steady state approach without additional hypotheses about external boundary conditions in the interstellar medium and internal conditions on the Sun. Physical analogy: electrons and positrons in the field theory. Mixed and intermittent ac ...
Note
Note

... Microturbulence ...
Part II: Ideas in Conflict.
Part II: Ideas in Conflict.

... sources for the Sun have been proposed.  However, all fail to provide enough energy for the Sun to have provided light to our solar system for the past 3-5 billion years except one: nuclear fusion.  Gravitational pressure of the Sun’s great mass causes the core to reach temperatures of 15 million ...
Teacher`s Guide for Solar System, a Kingfisher Young Knowledge
Teacher`s Guide for Solar System, a Kingfisher Young Knowledge

... Then, hand out thirty 4x6 blank index cards to the class. Depending on the number of students you have, some children might get more than one card. Assign each student the name of a planet in a specific language. Each student should refer to the chart and copy the name on his/her card clearly. In t ...
To get level
To get level

... Used correct units where appropriate. Used most key words correctly. Written your ideas in all your own words, using proper sentences. Used at least two sources of information to find out about the life cycle of a star. ...
worksheet.
worksheet.

TEK 8 Test Review 1. List the three subatomic particles and give
TEK 8 Test Review 1. List the three subatomic particles and give

... 1. List the three subatomic particles and give each of their masses. 2. Describe and draw an illustration (Bohr Model) of the most common element in the Universe. 3. Describe and draw an illustration (Bohr Model) of the second most common element in the ...
I have heard people call Jupiter a "failed star" that just did not get big
I have heard people call Jupiter a "failed star" that just did not get big

... Stars form directly from the collapse of dense clouds of interstellar gas and dust. Because of rotation, these clouds form flattened disks that surround the central, growing stars. After the star has nearly reached its final mass, by accreting gas from the disk, the leftover matter in the disk is fr ...
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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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