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LecForChap4
LecForChap4

... • Believed that a force had to act for an object to move. • Did not distinguish acceleration from velocity. • Believed that a heavy object would fall more quickly than a lighter object. • Earth-centered model of the solar system. ...
cook - University of Glasgow
cook - University of Glasgow

Size and Scale of the Universe (Teacher Guide)
Size and Scale of the Universe (Teacher Guide)

... d. Students know the evidence indicating that the planets are much closer to Earth than the stars are. 2. Earth-based and space-based astronomy reveal the structure, scale, and changes in stars, galaxies, and the universe over time. As a basis for understanding this concept: a. Students know the sol ...
The Moon`s Orbit
The Moon`s Orbit

... In this the lab, you will chart the Moon’s orbit and measure its true orbital period. You should find that the period does not exactly equal the period of the Moon’s phases. As discussed in class, the month is defined by the time period for the phases of the Moon, which are due to the relative posit ...
File
File

ASTR 1020 Homework Solutions
ASTR 1020 Homework Solutions

... So, P = 1 / 4.15 = 0.241 years = 88 days (as shown in Table 4-1 on page 70). 36. Mercury takes longer to go from greatest western elongation to greatest eastern elongation than vice versa because the orbital distance is greater, as can be seen in Figure 4-6. This can be verified with the dates, too, ...
FCAT 2.0 Practice/Sample Questions
FCAT 2.0 Practice/Sample Questions

... expensive rocks….if you can find them you can make lots of money!! ...
Lect07-2-4-09
Lect07-2-4-09

... Aside on the Speed of Light: 1. It might seem that Rømer’s determination of the speed of light is circular in our context, since he used the radius of the earth’s orbit to get it, and we want to use it with the observed aberration of starlight to get the radius of the earth’s orbit. 2. BUT, we hav ...
Our Sun - LWC Earth Science
Our Sun - LWC Earth Science

... – The sun contains 99.8% of the solar systems mass. ...
The Solar System
The Solar System

... consisting of continents and islands which together have many lakes and other sources of water contributing to the hydrosphere. Earth interacts with other objects in space, especially the Sun and the Moon. At present, Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis ...
The Sun
The Sun

Angular Momentum
Angular Momentum

Introduction to Astronomy
Introduction to Astronomy

... always results in a speed that is also less; ...
The Sun Video Focus Questions
The Sun Video Focus Questions

... Answers: 1. The sun is the largest body in our solar system, and it makes up about 99% of the solar system (more than all the other planets, comets, and asteroids combined.) 2. It takes the Earth 365 days to orbit the sun. 3. Copernicus and Galileo changed the way we view the universe today by provi ...
Toys Watch the Sky
Toys Watch the Sky

... The Sun appears to move from east to west due to the rotation of the Earth in the opposite direction (west to east). The time of day at which shadows are shortest is the time when the Sun is due north, so the shortest shadow points in a north-south direction. Some children may find it hard to believ ...
Astronomy 110 Announcements: 1. Doppler Effect 2. Transiting
Astronomy 110 Announcements: 1. Doppler Effect 2. Transiting

The Next 2-3 Weeks
The Next 2-3 Weeks

... Important to read through Chapter 17 (Relativity) before I start lecturing on it. Pay particular attention to 17.2 “Intervals & Geodesics” • What is a metric? • The Schwarzschild metric (= non-rotating black hole) • “The orbit of a satellite” (somewhat flakey example) I will present additional mater ...
Measuring Stars
Measuring Stars

... •Excellent accuracy •Parallax •Nearby Stars (< 300 ly) •Moderate accuracy •Spectroscopic Parallax ...
ASTR100 (Spring 2008) Introduction to Astronomy Our Star
ASTR100 (Spring 2008) Introduction to Astronomy Our Star

...  Sunspots.  Solar prominences.  Solar flares.  Coronal mass ejections. All are related to magnetic fields. ...
(Earth-like) planets
(Earth-like) planets

... on the Earth that came from Mars. One fell in Nakhla, Egypt, in 1911. It weighed 10 kg. The most famous one (ALH84001) was discovered in the Allan Hills of Antarctica. It is dated to be 4.5 billion years old. In a remarkable paper published in 1996, geologists claimed that this meteorite had evidenc ...
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society
Volume 20 Number 4 March 2012 - Forsyth Astronomical Society

... eclipse event with significant on-and-off dimming. At the deepest parts of the eclipse, at least 95% of the light from the star was being blocked by dust. They said that this is the first time astronomers have detected an extrasolar ring system transiting a Sun-like star, and the first system of dis ...
Journey Through the Universe By Brian Fontaine
Journey Through the Universe By Brian Fontaine

... It is believed that our solar system began similar to a galaxy…(or a hurricane). A cloud of gas (nebula) collapsed to form the sun, which began rotating. As time when on, the heavier dust fell toward the sun, creating the rocky inner planets, and the ...
Atmospheres in the Solar System • The speed at which molecules
Atmospheres in the Solar System • The speed at which molecules

... It is obvious that to hold on to an atmosphere, escape speed > thermal ...
Chapter 18 Notes - Valdosta State University
Chapter 18 Notes - Valdosta State University

S1_LectureOutlines
S1_LectureOutlines

... because of Earth’s rotation • You also need to know day of year because of Earth’s orbit • Accurate measurement of longitude requires an accurate clock. ...
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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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