1 / 21

The Origin of Earth

The Origin of Earth. Theory. Big Bang Theory. Universe is expanding from a concentrated point in time Approximately 15 Billion Years Ago (BYA) Universe started hot with lots of energy As it cooled created atoms, mainly Hydrogen (H). Galaxies.

rogan-mercado
Download Presentation

The Origin of Earth

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 Origin of Earth Theory

  2. Big Bang Theory • Universe is expanding from a concentrated point in time • Approximately 15 Billion Years Ago (BYA) • Universe started hot with lots of energy • As it cooled created atoms, mainly Hydrogen (H)

  3. Galaxies • Galaxy is a rotating aggregation of stars, dust, gas, & debris • Approximately 50 Billion galaxies with approximately 50 Billion stars in each • Ex: Milky Way

  4. Stars • Stars are spheres of illuminating gas & debris • Closest star is 42 trillion km away

  5. Solar System • Our solar system consists of the sun and its family of planets • The sun is a star • My Very Excited Mother Just Served Us Nine Pizzas • Although Pluto is now considered a Planetesical

  6. Lives of Stars • Stars live in stages • Condensation Theory explains how stars and planets form created from the evidence of the stages of star lives

  7. Nebula • Stars form in nebulae (cold clouds of dust & gas) • Nebula shrinks due to weak gravitational pull • Gasses condense forms a Protostar

  8. Protostar • Continues to condense & shrink • Temperature increases • Hydrogen atoms fuse and forms Helium • Releases LOTS of energy that escapes as light

  9. Star • Fusion of Hydrogen is stable • Not shrinking nor expanding • Small size = long life • Example: our star • Large size = short life

  10. Red Giant • Hydrogen fusion converts into heavier elements like Carbon & Oxygen • Increase in Energy (brighter) • Size Increases • Light Pulsates • Carbon & Oxygen gets trapped at core of Red Giant

  11. Supernova • Core of Red Giant collapses due to depletion of Hydrogen • Internal Temperature increases • Falls in on itself with an increase in energy causes a sudden explosion (10 secs) • Elements are sprayed into space

  12. Formation of Solar System • Solar Nebula hit by supernove explosion • Spread elements into our system • Caused gases in our nebula to spin • Approximately 5 BYA

  13. Spin allowed materials to condense at the center • Created Protosun & Planets • Protosun became Sun when temperature increased enough to fuse Hydrogen atoms

  14. Planets • Small bodies that orbit a star but emit no light • Planets formed by accretion – clumping of small particles into large masses • Evidence: heavier metals found in planets closer to the sun & gases further from the sun

More Related