1 / 11

Obj 4 notes

Obj 4 notes. Obj 4.4. The interior of the Earth is hot. Heat flow and movement of material within the Earth cause earthquakes, volcanic eruptions, create mountains, and ocean basins. Obj 4.

dyan
Download Presentation

Obj 4 notes

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. Obj 4 notes

  2. Obj 4.4 • The interior of the Earth is hot. Heat flow and movement of material within the Earth cause earthquakes, volcanic eruptions, create mountains, and ocean basins.

  3. Obj 4 • Fossils of the same reptiles have been found on various continents suggesting these continents were once connected. • The ancient supercontinent that contained all landmasses is called Pangea. • Convection currents in the asthenosphere appears to cause movement of Earth’s tectonic plates.

  4. Obj 4.4 • Lithospheric plates (land plates) move at centimeters per year because of the movement of the mantle.

  5. Obj 4 • Evidence that supports the theory of continental drift: • Close fit of continental coastlines • Similarity of fossils found on continental coasts • The matching of glacial grooves on different continents

  6. Obj 4.4 • The lithosphere is divided into tectonic plates. • The lithospheric plates (land plates) ride on a fluid-like asthenosphere (as-thin-as liquid).

  7. Obj 4 • Tectonic plates consist of continental crust and oceanic crust. • The newest land is located nearest to the location of sea-floor spreading. • The lithospheric plates (land plates, tectonic plates) move in relation to one another at one of three types of plate boundaries: convergent, divergent, and transform.

  8. Transform Boundary • Two plates slide past each other horizontally – transform boundary • A possible result of plates moving along a transform boundary is earthquakes.

  9. Divergent Boundary • Two plates move away from one another- divergent boundary • Divergent boundaries cause sea-floor spreading at mid-ocean ridges.

  10. Convergent Boundary • Two plates collide - convergent boundary • Subduction zones occur at continental-oceanic collisions(when oceanic crust crashes into continental crust). • Mountains are formed when tectonic plates (continental crust ) converge.

  11. Test Essay • Describe the continental drift theory and the evidence that supports the theory.

More Related