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Science Ch 4 Plate Tectonics Study Guide
Test Date: Friday, December 16th
Vocabulary Terms:
Convection currentsConduction currentsRadiationAsthenosphereSliding boundaryRift valleyColliding boundarySubduction
Sea-floor spreadingContinental drift-
Key Skills (Students should be able to):

Label the Earth’s layers on a diagram.

Locate the asthenosphere on a diagram. Identify

Describe which kind of plate boundary occurs when the sea-floor spreads.
Key Concepts:

Convection currents occur in the mantel and outer core.

Mi-ocean ridges occur at spreading boundaries.

In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge
as a new crust is added.

Convection currents move through the mantle.

Pressure increases inside Earth from the crust to the core.

The continental crust is made mostly of granite rock.

The oceanic crust is made mostly of basalt.
Additional Materials to study from:
Textbook pg 129-167
Section 1-5 Summary and Reading/Notetaking Guide
Dear Parents & Students,
Your signature below indicates that you are aware that there will be a test in Science on Friday,
December 16, 2011. Parents, please quiz your child at home using this study guide and additional
materials indicated above. Thank You.
Sincerely,
Mrs. Grant
_________________________
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Student Signature