1 / 25

A Living Planet Chapter 2

A Living Planet Chapter 2. Inside the Earth Inner Core- solid metallic center Outer core - melted iron/ nickle hotter than mantle Mantle - Thick layer of hot rock/ about 1800 miles thick Magma - molten rock from the mantle. Will rise through crust.

hedia
Download Presentation

A Living Planet Chapter 2

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. A Living PlanetChapter 2

  2. Inside the Earth • Inner Core-solid metallic center • Outer core- melted iron/nickle hotter than mantle • Mantle- Thick layer of hot rock/ about 1800 miles thick • Magma- molten rock from the mantle. Will rise through crust. • Crust-thin layer of rock on earth’s surface www.kidscosmos.org

  3. On and above the earth • Atmosphere- air that surrounds the earth • Lithosphere-surface land areas of the earth’s crust including continents and ocean basins 30-90 miles deep

  4. Hydrosphere- 71% of earth surface • Oceans, lakes, rivers, bodies of water, glaciers, permafrost • Biosphere- part of the earth where life is found www.rsmas.miami.edu www.sws.uiuc.edu

  5. Chapter 2.2 Bodies of water • Amount of water on earth constant. • 97% salt water. • 3% fresh water • 2% locked up in glaciers. • .5% is locked up in lakes, rivers, • .5% ground water-water held in pores of rock. • Hydrological cycle- continuous circulation of water • Water table- The level at which the rocks become saturated (can rise or fall depending on precipitation and use)

  6. Landforms: Naturally formed features on Earth’s surface. • Oceanic Landforms • Continental shelf-earth’s surface from the edge of a continent to the deep part of the ocean. • Have canyons, plains, ridges • Continental Landforms • Relief: the difference in elevation of a landform from its lowest point to highest point. http://www-class.unl.edu/geol101i/images/tectonics%20images/continental%20shelf.jpg

  7. Topography Combination of the surface shape and composition of the landforms in a region.

  8. Four categories of Topography

  9. Mountains

  10. Hills

  11. Plains

  12. Plateaus

  13. Continental Drift • Pangea • 1912 Alfred Wegener of Germany • Idea that earth was once a supercontinent that divided slowly millions of years ago • Split into many plates

  14. Internal forces • Tectonic plates

  15. Plate Movement Types: • Divergent Boundary

  16. Convergent: Collision Boundary

  17. Convergent Boundary

  18. Transform boundary

  19. Weathering: • Breaking down of rocks, soils and minerals and other artificial materials through contact with the Earth's atmosphere, biota and waters. • Occurs with no movement

  20. Mechanical Weathering breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure.

  21. Chemical Weatheringinvolves the direct effect of atmospheric chemicals or biologically produced chemicals (also known as biological weathering) in the breakdown of rocks, soils and minerals.

  22. Erosion: • process by which material is removed from a region of the Earth surface. • occurs due to transport by wind, water, or ice or gravity

More Related