1 / 11

The Solar System

The Solar System. A Review . Measuring Distance in Space. What does the Astronomical Unit (AU) measure? The Astronomical Unit (au) is a measure of distance that makes it easier to comprehend such large distances. The au covers planetary distances.

dougal
Télécharger la présentation

The Solar System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Solar System A Review

  2. Measuring Distance in Space • What does the Astronomical Unit (AU) measure? • The Astronomical Unit (au) is a measure of distance that makes it easier to comprehend such large distances. • The au covers planetary distances. • The au is based off of the average distance between the Earth and the sun: • 1 au = 149598000 km (92955887.6 mi.), or approximately 150 million km (93 million miles) • Galactic distances are measured by even larger units • The light year (ly), which is the distance light can travel in one year at the speed of light (which is about 299,792,458 m/s) • One light year is about 9.5 trillion km

  3. A Quick Review of the Parts of our Solar System • One star (the sun) at the center • Eight planets • Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune • Asteroid belt (between Mars and Jupiter);Kuiper belt • Pluto • Meteoroids, Comets, Asteroids • Moons

  4. The Milky Way and our SS

  5. Terrestrial vs. Jovian Planets • Earth-Like Planets • Include Mercury, Venus, Earth, Mars • Called “terrestrial” or inner • Similar in composition (rocks and metals, not a lot of hydrogen and helium) • Similar in size (smallish) • Similar in density (denser than outer planets) • Jupiter-like planets • Include Jupiter, Saturn, Uranus, Neptune • Called “Jovian” • Similar in composition (high percentage of hydrogen and helium) • Similar in size (big) • Similar in density (not very dense!)

  6. Size Pattern

  7. Density=amount of mass per volume Tennis ball vs. baseball vs. lax ball Density Pattern

  8. Does Pluto fit the pattern? • NO – why? (Handout: 2006 National Geographic article) • http://www.pbslearningmedia.org/resource/hew06.sci.ess.eiu.planetdefine/what-is-a-planet/ • Pluto is NOT considered a planet because… • It has not cleared the neighborhood around its orbit • Has different orbital habits…very eccentric orbit, orbit very tilted • Other dwarf planets: Ceres (asteroid), Eris • All dwarf planets are rocky/icy

  9. Minor Members of Solar System • Dwarf Planets • Spherical and orbits the Sun but has not cleared orbital path • Rocky/icy composition • Asteroids • Small rocky bodies that orbit the Sun but need not be spherical • Located between Mars and Jupiter although path may cross other planets • Bigger than 10 meters in diameter and orbit in period of 3-6 years • Comets • Rocky metallic ice balls, tail of ionized gasses and dust • Travel in long elliptical orbits from beyond Pluto • Meteoroids • Asteroids, leftover debris/parts of a comet

  10. A Quick Review of the Parts of our Solar System: Asteroid vs. Kuiper Belt http://science.nationalgeographic.com/science/space/solar-system?2d#close-modal

  11. The SIZE of the Solar System • Radius: over 5900 million km!! • Diameter? VOLUME? • How can we put this into perspective? • We modeled the solar system after the size of something we are familiar with…..like the WHS practice football field!

More Related