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![Revolve [around]
• the movement of an object around another
object](https://image.slidesharecdn.com/astronomyreview-120510175051-phpapp01/75/Astronomy-review-15-2048.jpg)
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• the spinning motion of a planet about its
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Uploaded byBeverley Sutton
Astronomy review
The document provides an overview of key astronomy concepts including the astronomical unit, light year, scale, our solar system, planets, stars, gravity, orbits, axes, seasons, eclipses, tides, constellations, clusters, galaxies, and the universe. Key terms are defined and examples are given for many concepts to help explain astronomical distances and movements.
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Astronomy review
- 1. Astronomy Review By Beverley Sutton Pueblo Gardens PreK-8
- 2. Astronomical Unit • Thedistance from Earth to the Sun is one Astronomical Unit. • The A.U. helps make the vast distances in our Solar System more manageable • Anything closer than Earth is a fraction of an A.U. • Anything further away is a multiple of an A.U.
- 3. Using the A.U.in our Solar System
- 4. Light Year • thedistance that light travels in one year • One light year is about 10 trillion kilometers! • Light from the sun takes only 8 minutes to reach Earth … i.e. light travels 150 million km in 8 minutes)
- 5. Scale • the ratioof a displayed drawing, model, or map to the actual physical size or distance • A good example would be a scale on a map or the Play-Doh™ planets we made
- 6. Scale model ofthe Solar System
- 7. Solar System • thesun, and all the planets, dwarf planets, moons, comets and asteroids that orbit the sun
- 8. Planet • Any ofthe eight large heavenly bodies revolving about the sun and shining by reflected light • Also, any similar body revolving about a star other than the sun
- 9. Our Planets in theorder of their proximity to the sun • My – Mercury • Very – Venus • Elegant – Earth • Mother – Mars • Just – Jupiter • Served – Saturn • Us – Uranus • Nachos – Neptune
- 10. Star • a large,spherical celestial body consisting of a mass of gas that is hot enough to sustain nuclear fusion and thus produce radiant energy
- 11. Our Sun isa Star
- 12. Gravity • the attractiveforce between two objects; its magnitude depends on their masses and the distance between them.
- 13. Ellipse • An elongatedcircle, or oval shape; the shape of the planets’ orbits
- 14. Orbit • the pathof an object as it revolves around another object in space
- 15. Revolve [around] • themovement of an object around another object
- 16. Axis • an imaginaryline that passes through Earth’s center and the North and South poles, about which Earth rotates.
- 17. Season • one offour natural divisions of the year—spring, summer, autumn (fall), and winter. • Caused by the tilt of Earth’s axis which changes the angle of the Sun’s rays as Earth orbits the Sun.
- 18. Reason for theSeasons
- 19.
- 20. Compass • a deviceused to determine geographical direction, usually consisting of a magnetic needle mounted on a pivot, aligning itself naturally with the Earth's magnetic field so that it points to the Earth's geomagnetic north or south pole
- 21. Rotate [on] • thespinning motion of a planet about its axis
- 22. Moon Phase • anyof the forms, recurring in cycles, in which the Moon appears in the sky; the percentage of illumination on the visible face of the moon.
- 24. Eclipse • the partialor total blocking of the light of one object by another, casting a shadow on the other object Solar Eclipse
- 25. Tides • the riseand fall of the level of water in the ocean
- 26. Constellation • a patternof stars in the sky
- 27. Cluster • a loose,irregular grouping of stars
- 28. Galaxy • a giantstructure that contains billions of stars
- 29. Universe • all ofspace and everything in it