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earth structure notes
earth structure notes

Starchtpg for PDF 2010 bw.indd
Starchtpg for PDF 2010 bw.indd

... dramatic environmental changes that were necessary before animal life could evolve. We are the best example of intelligent beings that evolution here on Earth has produced thus far. The pathway leading to the appearance of humans years ago involved so many vital branches and twists of fate that our ...
PowerPoint Presentation - Planetary Configurations
PowerPoint Presentation - Planetary Configurations

... invented calculus, all in a 2 year period after receiving his B.A. collected works published in the Principia (1687); establishes laws of motion ...
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Astronomy 101 Test 1 Review FOUNDATIONS Scientists use the

... (but a very long distance from!) Earth's North Pole, so that as the Earth rotates, the Celestial Sphere appears to rotate around this star. The Solar Day is how long it takes for the Sun to return to a given position in the sky. The Sidereal Day is how long it takes the Earth to spin 360 degrees on ...
The Sun
The Sun

... • 1. The solar wind creates aurorae (more later) • 2. Climate. We have seen that lower solar activity goes with lower average temperatures on Earth ...
VARIATIONS IN SOLAR RADIATION AND THE CAUSE OF ICE AGES
VARIATIONS IN SOLAR RADIATION AND THE CAUSE OF ICE AGES

... to have existed beforehand as a factor demanding consideration but have more or less had to be sought out and forced into the discussion. Where purely dynamical hypotheses are concerned it has been shown with certainty that the necessary changes would not occur with the required irregularity or to a ...
Chapter 30 Notes
Chapter 30 Notes

... 30.1 Cycles on Earth  A calendar is a means of keeping track of all the days in a year.  The development of a calendar came from a need to be able to predict the seasons, annual floods, and other cyclical occurrences in communities’ lives.  The day and the year, as units of time, are based upon t ...
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Astronomy Powerpoint

... Uranus’ axis is at a 97 degree angle, meaning that it orbits lying on its side! Neptune was discovered in 1846 (over 150 years ago). Since that time it has still yet to make a complete orbit around the sun, because one Neptune year lasts 165 Earth years! ...
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25 August: Getting Oriented, Astronomical Coordinate Systems

... altitude angle due south, sets in the west • When the Sun sets, it gets dark and we see the stars and planets • The Moon “ “ “ “ “ • The Moon rises at a different time each night and is seen against a different constellation • The constellations in the evening sky are different in different seasons ...
Climbing the Distance Ladder
Climbing the Distance Ladder

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Science 9: Unit 4 Review

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The Solar system

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Order of Magnitude and Estimation
Order of Magnitude and Estimation

... 6. The universe is considered to have begun with the “Big Bang” event. The galaxies that have moved the furthest are those with the greatest initial speeds. It is believed that these speeds have been constant in time. If a galaxy 3 x 1021 km away is receding from us at 1.5 x 1011 km y-1, calculate t ...
Astronomy 10: Introduction to General Astronomy Instructor: Tony
Astronomy 10: Introduction to General Astronomy Instructor: Tony

... (10) page 108, question 10 We expect Venus to have a larger angular size in the crescent phase rather than the gibbous phase. The reason why is that to appear as a crescent, Venus must be between Earth and the Sun, thus Venus is closer than in the gibbous phase. (11) page 108, question 17 The Earth’ ...
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Sample final

... 15. Neutron stars have a surface temperature of 1,000,000 K (1 × 106 K). What is the wavelength of maximum intensity of these stars? What part of the electromagnetic spectrum is that wavelength located in? 16. The Meade telescope in North Seattle CC’s dome has a primary mirror diameter of 0.25 m an ...
Astronomy = Timekeeping
Astronomy = Timekeeping

Exam Name___________________________________
Exam Name___________________________________

... from space, why then are there so few equivalent craters from such impacts on the Earth? A) Because geological processes and erosion by water and wind have destroyed most of the craters that have formed on Earth. B) Because the gravitational field of the Moon attracted incoming objects and this shie ...
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FREQUENTLY ASKED QUESTIONS Content Questions

... Well, this is a bit beyond the scope of this class, but extremely interesting! (and actually somewhat related to my research). Essentially, gravity is the culprit... here’s a quick description: stars normally hold themselves up against gravity by thermal pressure, where heat comes from nuclear react ...
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Our Sun - TheLearningCurve

... The sun has produced energy for billions of years. This type of energy from the sun can be changed into other forms such as, heat and electricity. ...
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... giants. Other terrestrial planets, aside from Earth, are Venus, Mercury, and Mars. Jupiter is the largest planet in our solar system. The solar system is also made up from other objects including asteroid belts, moons, and dwarf planets like Pluto. On a clear night we are able to see the moon. The ...
Think/Explain Gravity
Think/Explain Gravity

... surface of the earth. How can you explain this? ...
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day 2 - The Solar System Presentation

... the orbits of Mars and Jupiter (this asteroid belt also separates the inner and outer planets) ...
The Magnitude scale
The Magnitude scale

... The Magnitude scale Relative brightness on a backwards (!) log scale. Dates to Hipparchus. E.g., apparent relative luminosities of stars a & b are given by, ...
Ellipses, Parallax, and Retrograde Motion – Study Guide
Ellipses, Parallax, and Retrograde Motion – Study Guide

... 13. T or F All planets as observed from Earth will exhibit retrograde motion at some time. 14. T or F There are only two inferior planets in our Solar System. 15. T or F Retrograde motion is an apparent motion. 16. T or F Mars is brightest in our night sky when it is seen during retrograde cycle. 17 ...
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... • Indian Institute of Astrophysics conforms his findings. • His wife Indrani Debi, wishes he hadn’t found the comet. • A British scientist writes a paper based on Duttada’s discovery. • A conference of international experts is convened to yield a clue to the cosmic puzzle. • Duttada and the British ...
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Astronomical unit

The astronomical unit (symbol au, AU or ua) is a unit of length, roughly the distance from the Earth to the Sun. However, that distance varies as the Earth orbits the Sun, from a maximum (aphelion) to a minimum (perihelion) and back again once a year. Originally conceived as the average of Earth's aphelion and perihelion, it is now defined as exactly 7011149597870700000♠149597870700 meters (about 150 million kilometers, or 93 million miles). The astronomical unit is used primarily as a convenient yardstick for measuring distances within the Solar System or around other stars. However, it is also a fundamental component in the definition of another unit of astronomical length, the parsec.
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