Presentation on theme: "Formation of the Solar System This is a picture of the Eagle Nebula taken by the Hubble Telescope in 1995. A nebula is a cloud of gas and dust in space."— Presentation transcript:
Formation of the Solar System This is a picture of the Eagle Nebula taken by the Hubble Telescope in 1995. A nebula is a cloud of gas and dust in space. Image source: http://library.thinkquest.org/3645/universe.html
It all starts with A Collapsing Interstellar Cloud These nebulas contain hydrogen, helium, small amounts of other elements and dust. Where did that nebular gas and dust come from?
The Cloud Starts Collapsing Gravity slowly pulls the matter in the cloud together until it is concentrated enough to form stars and possibly planets. What do you think is forming here? Concentrated mini- chunks are called________.
The Collapse Accelerates At first, the collapse of the cloud is slow, but as it speeds up, the cloud becomes denser at the center. What is forming in the center of this cloud? The cloud eventually becomes flattened. Image Source: http://www.centauri-dreams.org/wp-content/uploads/2006/02/counterrotate.single.jpg
Matter Condenses and Our Solar System Was Born! The Sun formed when it became hot enough to fuse hydrogen into helium- this process is called nuclear fusion. The rotating disk and planetesimals surrounding the young Sun became our solar system. How and why did the rotating “chunks” become rounded, spherical planets? Image Source: http://jcconwell.files.wordpress.com/2008/10/solar-system-formation-early-1.jpg
So How Were the Different Planets Formed? While the solar system was forming, the temperature throughout the rotating disk varied. The space near the Sun was warm, while the outer edge of the rotating disk was cooler. As a result, the inner and outer planets were formed from different elements and gases in different ways. Image Source: http://www.nasa.gov/images/content/149759main_CarbonDiskMacLG.jpg
Steps of the Formation of the Solar System 1. There was a nebula of gas and dust. 2. The nebula starts collapsing and gravity pulls matter into the center of the cloud. 3. The collapse speeds up, and the cloud becomes denser at the center. 4. The cloud flattens into a disk. 5. The disk starts to rotate. 6. A star forms from the dense matter in the center, and the remaining matter forms planets as they orbit the new star.
How would you illustrate this process? Image Source: http://shayol.bartol.udel.edu/~rhdt/diploma/lecture_11/solar-system.jpg