Under Our Feet
Which Earth Layer is at the center of our earth, and what is it made of?
Core, Iron
Which feature is formed from a continental continental convergent boundary?
Mountains
What was the supercontinent called?
Pangaea
What are the two types of plates?
What was Alfred Wegener's Theory called?
Continental Drift
What is MECHANICAL the layer we are standing on right now?
Lithosphere
Which boundary formed the Mariana Trench?
Ocean-Ocean Converging
What is the study of the Earth's past magnetic field, recorded in the magnetic minerals of rocks at the time they formed?
Paleomagnetism
What plate boundary is made when two plate rub past one another and no lithosphere is destroyed?
Transform
Why was Alfred Wegener's theory rejected?
No Mechanism for continent movement.
What MECHANICAL layer do convection currents occur in?
Asthenosphere
What type of boundary formed the East African Rift Valley?
Continent-continent Diverging
Which layer of the Earth is rigid and constantly moving over the asthenosphere?
Lithosphere
What type of boundary causes a subduction zone?
Convergent
What does the broad geographic distribution of the Mesosaurus fossil tell us?
South America and Africa were once together.
What layer produces Earth's Magnetic Field?
DAILY DOUBLE: Why?
Highly conductive flowing liquid iron produces a magnetic field.
The volcanic arc in Oregon and Washington was formed by what boundary?
Ocean-Continent Converging
Why won't continental crust subduct?
It is too buoyant/not dense enough.
What boundary type creates new ocean crust?
Ocean-Ocean Divergent
What ended up being the mechanism that Alfred Wegener needed to show how the plates moved?
Convection Currents (causing "Slab Pull")
Solid, like thick rubber.
The longest "mountain range" in the world was formed by this tectonic boundary.
Ocean-Ocean Divergent
Where is the newest ocean floor? Where is the oldest ocean floor?
Right on a mid-ocean ridge
the farthest point from the mid-ocean ridge
What type of boundary created the Red sea and what will the Red sea be after a long time?
Continent-Continent Diverging
An Ocean
*Nothing to do with Alfred Wegener*
What is creating the islands of Hawaii?
The pacific plate moving overtop of a hot spot.
Islands are volcanic and increase in age as you move farther from the hot spot.