1 / 11

Observing the Solar System Section 1

Chapter 20 – The Solar System. Observing the Solar System Section 1. Observing the Solar System. Wander-ing Stars. Ancient Greeks watched the stars move across the sky. 5 points of light seemed to wonder among all the stars. Greeks called objects planets meaning “wondering star.”

jadon
Télécharger la présentation

Observing the Solar System Section 1

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. Chapter 20 – The Solar System Observing the Solar SystemSection 1

  2. Observing the Solar System Wander-ing Stars • Ancient Greeks watched the stars move across the sky. • 5 points of light seemed to wonder among all the stars. • Greeks called objects planets meaning “wondering star.” • Later, ancient Romans gave names to the planets Mercury, Venus, Mars, Jupiter, and Saturn.

  3. Observing the Solar System Greek Ideas: Earth at the Center • Greek scientists including Aristotle, thought that the Earth was at the center of the universe. • This was known as the geocentric system where Earth is at the center of the revolving planets. • A Greek scientist Ptolemy furthered the geocentric idea by adding that planets also move in smaller circles as they revolve around the Earth. Image From: ptolemy.berkeley.edu

  4. Observing the Solar System Ptolemy ‘s Ideas About the Universe Image From: vikdhillon.staff.shef.ac.uk

  5. Observing the Solar System Copern-icus’s Idea: Sun at the Center • A Polish astronomer, Nicholas Copernicus, thought that the sun was the center of the universe. • This was called a heliocentric system where the Earth and the other planets revolve around the sun. Image From: bbc.co.uk

  6. Observing the Solar System Galileo’s Observ-ations • Galileo was the first to use a telescope to look at objects in the sky and provide proof for Copernicus’s ideas about a heliocentric system. Image From: news.bbc.co.uk

  7. Observing the Solar System Kepler • Johannes Kepler determined the shape of the planets’ orbits to be elliptical. Image From: ph.surrey.ac.uk

  8. Solar System FACTS • Number of Planets: 8 • Number of Dwarf Planets: 5

  9. Solar System FACTS • Names of Rocky Planets: Mercury, Venus, Earth, Mars • Names of Gas Giants: Jupiter, Saturn, Uranus, Neptune

  10. Solar System FACTS • Planet with the Most Moons: Saturn – 53 known moons • Planet with the Least # of Moons: Mercury and Venus – 0 moons

  11. Solar System FACTS • Number of Asteroids: 535,815 • Estimated Value of Asteroids in Belt: $100,000,000 for every person on Earth • Number of Comets: 3,061 known

More Related