1 / 23

Physical Science

Physical Science. Interior of the Earth. Earthquake And Volcano Map. Earthquake Information. http://www.earthquake.gov/eqcenter/ http://www.earthquake.gov/eqcenter/ http://earthobservatory.nasa.gov/NaturalHazards/category.php?cat_id=12.

artan
Télécharger la présentation

Physical Science

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. Physical Science Interior of the Earth

  2. Earthquake And Volcano Map

  3. Earthquake Information http://www.earthquake.gov/eqcenter/ http://www.earthquake.gov/eqcenter/ http://earthobservatory.nasa.gov/NaturalHazards/category.php?cat_id=12

  4. We understand the components of our earth by looking at Seismic wave – waves traveling through the earth From Yahoo Images

  5. Seismic Waves • Body Waves – travel through the earths interior • Surface Waves – travel on the earths surface From Yahoo Images

  6. Body Waves Primary waves (p wave) longitudinal type waves travel in all directions from source move faster than s waves Secondary waves (s wave) Transverse type wave Similar to waves produced from a violin string Cannot propagate through liquid

  7. Surface wave • Rayleigh waves – move in an up and down motion • Love waves – move in a side to side motion

  8. S Waves Do Not Travel Through Liquids From Yahoo Images

  9. Waves Through the Earth

  10. Waves Through the Earth

  11. The core • Inner core – composed of Iron and nickel solid • Outer core – liquid iron and nickel – the flow of these metals produces the magnetic field From Yahoo Images

  12. The mantle Composed of hot iron rich silicate rocks

  13. Upper mantle • Asthenoshphere – lower portion plastic like properties • Lithosphere – floats on the asthenoshpere and includes the crust

  14. Continental crust is less dense than ocean crust – floats

  15. Continental drift Pangaea – having all the continents together as on land mass

  16. Evidences for such a theory • Mountain chain similarities • Identical rock compositions • Similar fossil findings • Climatic data – ice sheets • Change of the earths magnetism

More Related