Layers of Earth
Which layer is liquid iron and nickel?
Outer Core
What was the name of the super continent?
Pangea
What is a boundary where plates move apart?
Divergent Boundary
What is the point inside the Earth where a quake starts?
The Focus
The opening that lava comes through
A Vent
Which layer is semi-liquid and allows plates to move?
Asthenosphere
What fossil evidence supports continental drift?
Mesosaurus and Glossopteris
What is a boundary where plates collide?
Convergent boundary
What is the point on the surface directly above the focus?
The Epicenter
What type of volcano is large and broad with gentle slopes?
Shield Volcano
Which layer is the thinnest and outer most?
The crust
What evidence from the ocean floor supports spreading?
Magnetic strips
What force pulls plates down into the mantle?
Subduction
What scale measures the magnitude of an earthquake?
The Richter scale
What are two the two types of lava?
Mafic and felsic
What is the thickest solid layer?
Mantle
Process at mid ocean ridges
Sea floor spreading
Where does new crust form?
Divergent boundary's
What are the primary waves?
P-waves
Which type of lava is explosive?
Felsic
What are the two types of crust?
Oceanic and continental
Who came up with the theory or continental drift?
Alfred Wegener
What forms at mountain ranges?
New crust
What are s-waves?
Surface waves
Where do volcanoes usually occur?
Mid ocean ridges