B
What are the 4 layers of earth?
Crust, Mantle, Outer core, Inner core.
The inner core is composed of _______ and ________
Iron, Nickel
Most of the volume of our planet is composed of __________.
The mantle
Which part of the mantle is seemingly "plastic"
The Asthenosphere
What is the Continental crust made of?
Granite.
The upper mantle and crust make up what major tectonic feature of our planet?
The lithosphere
The San Andreas fault separates the ____________ plate from the ________ _________________ plate.
Pacific Plate, North American plate
CONGRATS YOU FOUND THE LUCKY ONE (go to answer)
FIRST GROUP TO SAY HI TO MS. POLIVICK GETS 200 POINTS
The outer core is ____ dense than the mantle.
Denser
What is the oceanic crust made of?
Basalt.
How many MAJOR continental plates are there?
7 major plates
What lies directly beneath the lithosphere and is around 200 km thick?
The Asthenospere
Where are melts most likely to be produced by the adiabatic rise of mantle?
mid-ocean ridges, hot spots, and mantle plumes
The East Pacific Rise and the Mid-Atlantic Ridge represent ____________ boundaries
Divergent Plate boundaries
What state is the inner core?
Solid
what is a famous fault line in California
The San Andreas fault line. (10 bonus if you can name another)
Strato or composite volcanoes are typical of _________________ _______.
subduction zones and convergent plate boundaries
What are the four driving forces behind plate motion?
mantle convection, slab pull, and ridge push.
Where is the Juan de Fuca plate?
off the west coast of North America, between the Pacific Plate to the west and the North American Plate to the east (50 Bonus points if you know what state it lies off shore of)
What state is the outer core?
Liquid
Is the continental crust is thicker or thinner than the oceanic crust?
Thicker
According to plate-tectonic theory where is new oceanic crust being formed?
mid-ocean ridges
What is the likely cause of melting of mantle material along convergent margins?
water released from a subducting (sinking) oceanic plate lowers the melting point of the overlying mantle wedge, a process called flux melting
The trailing edge of the South American plate lies where?
the Atlantic Ocean, extending from the continent's east coast to the Mid-Atlantic Ridge.
Transform boundary