Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Earth's Layers
| Term | Definition |
|---|---|
| crust | The outer layer of the Earth. Made up of both continental (land) and oceanic crust (under the ocean). 5-50 km thick |
| Oceanic Crust | A thin layer of crust that overlies the ocean basins |
| Continental Crust | Layer of rock which forms the continents |
| lithosphere | Solid outer section of the Earth, which includes the crust and upper mantle; divided into tectonic plates |
| asthenosphere | Upper part of the mantle; located below the lithosphere |
| subduction | dense oceanic crust sinks beneath less dense continental crust |
| mantle | Largest layer of the Earth under the crust about 2,890km |
| outer core | Liquid layer 2,300 km thick, second largest. Lies between inner core and mantle; responsible for Earth's magnetic field |
| inner core | A solid ball of metal, 1,250 km thick. So hot it melts everything in the outer core. |
| density | how tightly packed particles are in a substance; more space between particles = less dense; less space between particles = more dense |
| convection current | circular movement of material caused by differences in temperature and density. In the Earth’s mantle, hotter, less‑dense rock rises, while cooler, denser rock sinks. |
Created by:
LMcdRob