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universe - Northwest ISD Moodle
universe - Northwest ISD Moodle

... This energy, once it reaches the Earth, is then utilized by plant life to build tissue, and repair injury, as well as maintain homeostasis. Then animals and microscopic consumers eat the plants, delivering the energy to their bodies. Consumers use this energy for the same purposes as plants. ...
Spectroscopy – Lecture 1
Spectroscopy – Lecture 1

Solution Set
Solution Set

... nuclei,  it  comes  to  about  one  percent  of  the  total  number  of  galaxies  we  see.    But  this   doesn't  mean  that  only  one  percent  of  galaxies  have  supermassive  black  holes  in   their  nuclei.    How  so? ...
Orbits and Dark Matter, the Center of the Milky Way
Orbits and Dark Matter, the Center of the Milky Way

Lecture 5: The Gray Atmosphere
Lecture 5: The Gray Atmosphere

transcript
transcript

... 03:33 Ones we will call terrestrial, which are rocky planets like our earth and the others we will call gases, like Jupiter and Saturn because they are mostly made of gas. So rocky planets reside closer to the star [our sun] so we have four planets residing close to our sun because rocky material ca ...
Observation
Observation

... The solution?? The relativistic motion ( with Γ≧100 ) of the emitting region GRB are produced when an UR energy flow is converted to radiation in an optically thin region aberration of light : cos  '   cos   1  v cos  ' beaming effect : for   1, ...
what is a comet? - Fireballs in the sky
what is a comet? - Fireballs in the sky

Section 1 - PISDEScience
Section 1 - PISDEScience

... As part of Bundle 1, students set up their science notebook. This includes adding all of the components and making an initial entry. Initial entries should be made outside of a regular investigation and should be a lesson itself. Throughout the year, notebooks should be used as a teaching tool for v ...
Planetarium_Exercises - Illinois State University
Planetarium_Exercises - Illinois State University

Criteria for Core-Collapse Supernova Explosions
Criteria for Core-Collapse Supernova Explosions

A Tale of Star and Planet Formation
A Tale of Star and Planet Formation

... We are using Keck to observe young binary systems as they form. These studies are difficult because binary stars are typically very close together in projection and because atmospheric distortions blur our observations. Keck can observe these stars because of a technology called Adaptive Optics. AO ...
ANSWER KEY ~ ASK 8 Science - Allendale School District
ANSWER KEY ~ ASK 8 Science - Allendale School District

... Ozone Depletion Ozone (O3) is a molecule made up of 3 atoms of oxygen instead of two, which is Oxygen gas (O2). It is found in the upper atmosphere of Earth and protects living organisms from harmful ultraviolet radiation. Certain molecules produced by human activity, such as CFCs, react with ozone ...
@let@token Stellar Oscillations: Pulsations of Stars Throughout the
@let@token Stellar Oscillations: Pulsations of Stars Throughout the

... evaluated at the base of the convective envelope. As ac whitethdwarf cools, vection zone deepens, and lower frequency modes become overstable. However, the deeper convection zone impedes the passage of Ñux perturbations from the base of the convection zone to the photosphere. Thus the photometric va ...
Origin of Planetary Systems
Origin of Planetary Systems

Astronomy - mrsciguy
Astronomy - mrsciguy

... the Moon's orbit brings it closer to earth (perigee) at the New Moon, it appears larger to us. Also notice how the Moon 'rocks' up and down and back and forth. That happens because the Moon's orbit takes it above the Earth's equator (allowing us to see more of the south polar region) and below the e ...
Observing the Sky
Observing the Sky

... rising directly to the east. When this star reaches its highest position above the horizon, where will it be? a) high in the northern sky b) high in the eastern sky c) high in the southern sky d) high in the western sky e) directly overhead ...
The Cycles of the Sky
The Cycles of the Sky

Bulletin of the American Meteorological Society
Bulletin of the American Meteorological Society

... plasma drops steadily, maintaining hydrostatic equilibrium with the gravitational force throughout the body of the Sun. That requires both the temperature and density of the solar plasma to fall. At the base of the radiation zone, temperatures are about 10 MK, but they decrease to 2 MK at its upper ...
Lecture 13 Main Sequence and Low Mass Evolution
Lecture 13 Main Sequence and Low Mass Evolution

... 0.1
Msun
M‐star:
~
3
Trillion
years
 ...
Stellar Continua
Stellar Continua

A Pulsar Shot Out from a Supernova Explosion! - Chandra X
A Pulsar Shot Out from a Supernova Explosion! - Chandra X

... happen if the pulsar collided with a star like our sun. Answer: Traveling at 2000 km/sec, it would take the pulsar 12 minutes to travel through a star like our sun (1.4 million/2000 km/sec = 700 seconds or 12 minutes). Because the density of the pulsar is over one trillion times that of our sun, it ...
astronomy notes
astronomy notes

Ch_1_v2-3
Ch_1_v2-3

... 3. The ptolemaic system fulfilled the requirements of a scientific theory because a. its explanations of celestial motions, based on observations, resulted in testable predictions b. it was presented openly for public inspection when included in Ptolemy's Almagest c. it was believed to represent an ...
Day and Night Sky - Georgia Standards
Day and Night Sky - Georgia Standards

... shade and sun (pieces of bubble gum work well also). Discuss what a sunburn is if anyone has had one. What gave you the burn? Discuss heat coming from sun. 2. If resources are available an extension activity can be to use solar lighting lamps to show how the sun gives off heat and energy to be used. ...
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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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