Layers of the earth
Describe mesosphere
-"middle" -lower part of mantle
What are the layers of the earth?(in order
1.) Crust, mantle, core 2.) Lithosphere, Asthenosphere, mesosphere, outer core, inner core
How is the lithosphere related to the crust?
both outer layer
What are the two types of crusts?
continental and oceanic
In what layer of the earth are the deepest mines and drill holes found?
crust
You are digging through outermost layer of earth. Where are you?
crust or lithosphere
outer core
liquide layer of core -sphere of solid nickel and iron
Which part of earth is broken into tectonic plates?
lithosphere
How do we know about earths layers when we haven't been there?
seismic waves cause by earthquakes
How do continental and oceanic crusts differ? any similarities?
-both made mainly of oxygen, silicon, and aluminum -oceanic is more dense
Describe the Lithosphere
-cool rigid -divided into tectonic plates
inner core
-solid, dense center of earth
Describe Asthenosphere
-solid, plastic layer made of rock -flows slowly and allows tectonic plates to move across
Why haven't we drilled deeper into earth?
our drills aren't powerful enough
