Earth's Compositional Layers
Earth's compositional layers are categorized by what property
Chemical
Earth's mechanical layers are categorized by what property?
Physical
Convection currents in Earth's mantle
Oceanic-oceanic divergent boundaries create...
Mid-ocean ridges
Who proposed the Theory of Continental Drift?
Alfred Wegener
The first compositional layer is...
The crust
After the ocenanic and continental crust, what is Earth's next mechanical layer?
The lithosphere
Name the plate boundary where two plates come together (collide)
Convergent
Transform boundaries create...
A SPECIFIC LOCATION example of a continental divergent boundary is....
The Great Rift Valley in Africa
The second compositional layer is...
The mantle
After the crust and lithosphere, what is Earth's third mechanical layer?
The asthenosphere
Name the plate boundary where two plates move away from one another (divide)
divergent plate boundary
Continental/continental convergent boundaries create...
folded mountains
Who discovered Sea Floor spreading?
Harry Hess
The third compositional layer is...
The core
What are Earth's two innermost mechanical layers?
The the inner and outer core
Name the plate boundary where two plates slide past one another
Transform
Oceanic/oceanic convergent boundaries create...
underwater volcanoes
The lithospheric plates glide across which of Earth's mechanical layers?
Asthenosphere
Draw a picture of Earth's compositional layers with correct labels
See drawings
Draw a picture of Earth's mechanical layers with correct labels
See pictures
List at least two pieces of evidence that support the Theory of Continental Drift.
Fossil evidence, continental fit, glacial evidence, land forms and rock layers.
Continental/oceanic convergent boundaries create...
Above ground volcanoes
We forgot to mention a mechanical layer in category 2. Which one was it? (If we haven't answered all of category 2 yet, name all of Earth's mechanical layers in order from outside to inside the Earth.)
Mesosphere