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Chapter 2 PowerPoint
Chapter 2 PowerPoint

... – Unbalanced forces cause rotation axis to wobble • Directly proportional to angular momentum • Circular motion of the axis projected into space ...
Blurbs 4th six weeks Earth and Space Students identify the role of
Blurbs 4th six weeks Earth and Space Students identify the role of

... Evidence about the age of the universe can also be gathered by studying how long certain known stars and other celestial objects took to form and by measuring speed at which galaxies are moving away from one another. Scientists use a variety of methods to study the origins of the universe, such as t ...
Lesson 7
Lesson 7

... sun, or feed around the sun. None of those choices make sense. The Earth does circle around the sun. In Number three, did you remember to write in a complete statement? I hope so! “Why is Earth called the Life Planet?” (Response: Scientists believe Earth is the only planet where plants, animals, and ...
Galileo`s Motion, Newton`s Gravity
Galileo`s Motion, Newton`s Gravity

... about why planets orbited stars • Philosophical arguments only • Newton’s Realization – To understand the motion of the planets, it is first necessary to understand motion! ...
Document
Document

... • In the 3rd Century B.C., a Greek, Aristarchus of Samos, figured out a way to measure the relative sizes and distances of the Moon and Sun. • He noticed that when the Moon was eclipsed by the Earth (월식) we can see the Earth's shadow creep across the face of the Moon. Earth's shadow is circular, and ...
Chapter 28
Chapter 28

... Motions of the Moon • The length of time it takes for the Moon to go through a complete cycle of phases is called a lunar month. • The length of a lunar month is about 29.5 days, which is longer than the 27.3 days it takes for one revolution, or orbit, around Earth. • The Moon also rises and sets 50 ...
Chapter 5 Terrestrial Worlds
Chapter 5 Terrestrial Worlds

... of heavily cratered and smooth regions like the Moon. • Smooth regions are likely ancient lava flows. ...
Rotation vs. Revolution Throughout a 24 hour period, Earth will
Rotation vs. Revolution Throughout a 24 hour period, Earth will

... Mercury Venus Earth Mars Jupiter ...
Seasons
Seasons

... This means that, during part of the year, the northern part of the Earth will lean more directly to the sun, and during other parts of the year the southern part of the Earth will. ...
PPT, 13.2 Mb
PPT, 13.2 Mb

... The unfortunate adventures of Guillaume-Joseph-Hyacinthe-JeanBaptiste Gentil de la Galaisière (Le Gentil) ...
Planet/Dwarf Planet and Moon Assignments
Planet/Dwarf Planet and Moon Assignments

... Planets were assigned based on how noisy you are in class! ...
Seasonal calendar lesson plan - Department of Environment and
Seasonal calendar lesson plan - Department of Environment and

... winter or summer; the wattles would not know when to flower and no one would know if the mackerel were fat! In general, the whole solar system (including the sun, planets and moons) all spin in the same anti-clockwise direction (looking down from an arbitrary north perspective). The common anti-cloc ...
Unit 7: Astronomy
Unit 7: Astronomy

... • Observational evidence caused the model of the solar system to be changed from one in which the sun and planets orbit the Earth to one • in which the Earth and planets orbit the sun. • The “Big Bang” is a theory of how the universe began. • The sun is a medium-sized star located near the edge of a ...
Celestial Motions
Celestial Motions

... property of matter by which it continues in its uniform motion in a straight line ...
Outer or Jovian Planets - Academic Computer Center
Outer or Jovian Planets - Academic Computer Center

... two asteroids observed by the NEAR spacecraft. NEAR orbited and eventually landed on Eros. Eros is about 22 x 8 x 8 miles. ...
Coursework 1 File
Coursework 1 File

... winter solstices (hint: it should either be into or out of the page in each case). Using your results, argue that the torque acting, when integrated over the orbit of the Earth around the Sun, gives rise to a well defined direction of precession. 5. Now that you have determined the direction of prec ...
Testing
Testing

... which Sun crosses meridian • It is a local definition of time ...
Advertising - Science Outreach
Advertising - Science Outreach

... Huge numbers of galaxies have been photographed by the Hubble and other telescopes around the world. It would take years from scientists to catalogue all these galaxies. So Astronomers have created this website where individuals can help classify these galaxies. After a quick training session you ar ...
The Corona
The Corona

... The Sun is a second-generation star, meaning that some of its material came from former stars. The first stars were composed only of the hydrogen and helium produced in the early universe. Although hydrogen (94%) and helium (6%) also are the main ingredients of the Sun, it contains heavier elements ...
Earth`s Motions
Earth`s Motions

... precession of the equinoxes to vary over time so that the speed of precession is not constant • principal sources of tidal force are the Sun and Moon, which continuously change location relative to each other and thus cause nutation in Earth's axis ...
Consumed in He burning
Consumed in He burning

... Collectively referred to as ‘He burning’ ...
Unit 9: Earth Cycles
Unit 9: Earth Cycles

... around an imaginary axis at a 23.5° tilt. It points in the same direction relative to the stars, so that the North Pole points towards the star Polaris (North Star). ...
Early Astronomies
Early Astronomies

... Showed Sun was many times further than Moon and that Moon was smaller than Earth and that Sun was larger than Earth. Developed first heliocentric (Sun centered) theory. Up until this, all theories had been geocentric (Earth centered). Suggested that Earth rotated about its own axis. ...
Jupiter_Io_13_3
Jupiter_Io_13_3

... Io was discovered on 8 January 1610 by Galileo Galilei. The discovery, along with three other Jovian moons, was the first time a moon was discovered orbiting a planet other than Earth. The discovery of the four Galilean satellites eventually led to the understanding that planets in our solar system ...
Teacher Guide pages
Teacher Guide pages

... Small Solar System Bodies (SSSB) are objects in the solar system that are neither planets or dwarf planets. Of these, asteroids, comets and meteors are sometimes grouped together because of their similarities, but they are distinct objects. Asteroids are irregularly shaped pieces of rock moving thro ...
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Orrery



An orrery is a mechanical model of the solar system that illustrates or predicts the relative positions and motions of the planets and moons, usually according to the heliocentric model. It may also represent the relative sizes of these bodies; but since accurate scaling is often not practical due to the actual large ratio differences, a subdued approximation may be used instead. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to Charles Boyle, 4th Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.
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