PLATE TECTONICS REVIEW (part 2)
PLATE BOUNDARIES DIAGRAM:
1. Which type of boundary occurs at X?
A DIVERGENT BOUNDARY.
2. What feature occurs at Y, and how does it form?
A TRENCH IS FORMING. IT FORMS AS OCEANIC
CRUST GOES BENEATH THE CONTINENTAL
CRUST. (SUBDUCTION)
3. What is happening at Z?
SUBDUCTION- ONE PLATE (B) IS PLUNGING
BENEATH THE OTHER (C) AND MELTING BACK
INTO THE MANTLE.
4. What type of plate boundary occurs at Y?
CONVERGENT
5. What feature occurs at X and how does it form?
MID OCEAN RIDGE- FORMS FROM A
DIVERGENT BOUNDARY. AS THE PLATES
DRIFT APART MOLTEN MATERIAL ERUPTS
AND COOLS FORMING NEW CRUST.
EARTH’S INTERIOR DIAGRAM:
1. Earth’s solid inner core is surrounded by which
layer?
OUTER CORE.
2. The asthenosphere is part of which layer of Earth?
MANTLE.
3. Which layer would you expect pressure to be the
greatest?
INNER CORE.
4. According to the theory of plate tectonics which
layer of the Earth is broken up into separate sections
called plates?
LITHOSPHERE. (CRUST)
5. Which layer is made up partly of crust and partly of
mantle material? LITHOSPHERE.
6. Based on the diagram describe on major difference
between oceanic crust and continental crust.
CONTINENTAL CRUST IS THICKER THAN
OCEANIC CRUST.