Breaking Up Is Hard To Do
Millions of years ago, all of Earth's landmasses were joined together in one "Super Continent" called?
Pangaea
Tectonic plate move away from each other at this type of boundary.
Divergent Boundary
Oceanic crust is more/less dense then continental crust.
More dense
This provides the heat the runs the convection currents in the mantle?
The core
This evidence of Continental Drift relies on long dead plants and animals. Explain the theory in detail.
Fossil Evidence
Similar fossil evidence on different continents, with no way for the plant or animal to travel the distance in modern arrangement of continents.
Tectonic plates crash into each other at this type of boundary.
Convergent Boundary
As you move away from the Mid-Ocean Ridge the age of the crust material get older or younger?
Older
Why does material from the mantle flow in a convection current?
Heat from the core creates a density difference.
This theory required evidence using land mass shapes and location of mountain ranges. Explain the theory in detail.
"Jigsaw puzzle" Theory
Continental land mass fit together like puzzle pieces and when put together, mountain ranges and similar rock layers line up as if they were once linked
Tectonic plate slide past each other, creating friction, at this type of plate boundary.
Transform Boundary
The Ring of Fire, an area of high volcanic activity, surrenders which ocean?
Pacific Ocean
The is the outermost mechanical layer of the Earth, consisting of the crust and top layer of the mantle?
the Lithosphere
The scientist who first proposed the theory of Continent Drift.
Alfred Wegener
This forms when an oceanic plate and a continental plate converge.
Deep Ocean Trench
What is the name of the underwater mountain ranges, where sea floor spreading occurs?
Mid- Ocean Ridge
This is created by the core heat, causing the Lithosphere to break into plates and moves them around.
Convection Currents
This theory required determining the age of the sea floor at a various location. Explain the theory in detail.
Sea floor spreading-
New sea floor is created at mid-ocean ridges, newer rock is found near the ridge while older rock is further away
This forms when two continental plates converge into each other.
Mountain range
The process of denser oceanic plate sinks beneath less dense continental plate and melts back into the mantle is called?
Subduction
This is the layer of the mantle where the convection currents occur?
the Asthenosphere