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May 8, 2012 - Plummer Pumas Science
May 8, 2012 - Plummer Pumas Science

... Defining the Habitable Zone The presence of liquid water at the surface of a planet appears to be one of the central characteristic that distinguishes whether or not a planet can harbor life. This requires that the planet be at a distance from the central star where the temperature is not too low t ...
Scale of the Solar System
Scale of the Solar System

... Now fold your paper back in half. Then fold it in half again. Mark the two positions of the folds on your paper. S ...
Study Guide 8th Grade Ocean Motions In the Northern Hemisphere
Study Guide 8th Grade Ocean Motions In the Northern Hemisphere

... Patterns of stars in the sky are called constellations Sound waves are not part of the electromagnetic spectrum A neutron star that appears to produce pulses of radio waves is called a pulsar The earliest stage of a star’s life is called a protostar The Hertzsprung-Russell diagram graphs stars’ abso ...
Document
Document

... Helioseismology Oscillation frequencies can be used to yield information on the structure and dynamics inside the Sun. ...
Study Guide 8th Grade 2nd Semester Test Ocean Motions In the
Study Guide 8th Grade 2nd Semester Test Ocean Motions In the

The Sun
The Sun

... are stars that smaller and larger than our sun. The sun is just the right size and distance from Earth so that there can be life on our planet.  There are stars that are much larger than our sun. A star in the Orion constellation called Betelgeuse is 400 times larger than our sun. If our sun was th ...
Lecture110402
Lecture110402

... Some questions are directly from the homework and quizzes ...
March/April 2015
March/April 2015

... with some of these atoms and excite their electrons. While some wavelengths are absorbed, all the other wavelengths are transparent to the atmosphere, so pass straight through without interacting. When the light is collected by a telescope and split up into a spectrum, any wavelengths that interacte ...
M - Physics.cz
M - Physics.cz

... It was previously noticed that the RP model fits the data qualitatively well but always with non-negligible residuals (which arise especially on the top part of the correlation). It is often quoted that the model implies a high angular momentum (j>0.25) for which the residuals are somewhat lower (bu ...
Observing the Solar System
Observing the Solar System

...  Sun is the source of all visible light in the solar system  Just like the moon reflects the sunlight, the other planets reflect sunlight.  Also have launched many space probes to put on other planets so we can get samples of what their surface is made out of. ...
Exploring the Solar System
Exploring the Solar System

... • Our solar system consists of the sun, the planets, their moons, and a variety of smaller objects that revolve around the sun. • Distances in our solar system very large so astronomers use astronomical units to describe them. • 1 astronomical unit (AU) = average distance from Earth to the sun. (149 ...
Stellar structure
Stellar structure

... its temperature, density and luminosity as a function of radius). Since now r(Mr) is one of the structure equations the radius R of the star will also be automatically determined once M is given. The steady-state, homogeneous composition model that we have constructed is meaningful only for timescal ...
Reasons for the Seasons
Reasons for the Seasons

... away from the Sun, resulting in a low solar angle, a shorter day, and receiving less direct sunlight. During the summer, the hemisphere is tilted toward the Sun, resulting in a high solar angle, receiving more direct light, and therefore a longer amount of daylight. Distance to the Sun has no affect ...
Students make a distance-scale solar system model with toilet paper.
Students make a distance-scale solar system model with toilet paper.

Slide 1
Slide 1

... fusing, we start getting everything collapsing down like before. But no amount of new heat or pressure will let it do any more fusion. This is when the star will explode. But we’ll get to that in a second. The sun is only going to have enough pressure to get to the point where it fuses carbon. After ...
Our Sun, Sol - Hobbs High School
Our Sun, Sol - Hobbs High School

... • Such a star is small and relatively cool and remains on the main sequence for 100 billion years until it consumes all its hydrogen fuel (no outward pressure from burning, remember) and collapses under its own weight. • It becomes a white dwarf. • Eventually, the white dwarf will radiate away all i ...
Sun and Other Stars Notes
Sun and Other Stars Notes

... Further subclasses of stars are numbers, our sun is G2 star, not quite hot enough to be considered a G1 but hotter than a G3 The Hertzsprung-Russell Diagram -How are stars classified on H-R Diagrams?, -A star’s luminosity (__________________________________) and its surface temperature (spectral cla ...
Contents of the Universe
Contents of the Universe

... White dwarf • Star burns up rest of hydrogen • Nothing remains but degenerate core of Oxygen and Carbon • “White dwarf” cools but does not contract because core is degenerate • No energy from fusion, no energy from gravitational contraction • White dwarf slowly fades away… ...
Powerpoint
Powerpoint

Star in a Box - Las Cumbres Observatory Global Telescope
Star in a Box - Las Cumbres Observatory Global Telescope

... •Luminosity up the vertical axis (measured relative to the Sun) •Temperature along the horizontal axis (measured in Kelvin) The stars Vega and Sirius are brighter than the Sun, and also hotter. Where would you put them? Where would you mark the Sun on the plot? ...
AST 301 Introduction to Astronomy - University of Texas Astronomy
AST 301 Introduction to Astronomy - University of Texas Astronomy

Science Solar System Project
Science Solar System Project

... representation of the solar system. For example, the sun is the largest body in our solar system, so it should be the biggest celestial body in your model. Jupiter is the largest planet, so it should be represented that way on your model. Grading:  1~ model has the same characteristics of a “2” mod ...
Solar Eclipse Box - Hooked on Science
Solar Eclipse Box - Hooked on Science

... The sun and the moon form a system with Earth. Patterns of the motion of the sun, moon, and stars in the sky can be observed, described, and predicted. The sun is a star that appears larger and brighter than other stars because it is closer. Earth revolves or moves around the sun, and at the same ti ...
The Earth in Space
The Earth in Space

THE SOLAR SYSTEM SONG There are eight planets in our solar
THE SOLAR SYSTEM SONG There are eight planets in our solar

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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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