Cratonic Keels Are

question 72

Multiple Choice

Cratonic keels are

• A)thinner under continents than oceans.
• B)of even thickness everywhere.
• C)thinnest under cratons.
• D)thicker under continents than oceans.

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Definitions:

Tension-Cohesion Model

A theory explaining the movement of water through the xylem of plants, based on water molecule cohesion and tension created by evaporation.

Water Potential

A measure of the potential energy in water as well as the difference in potential energy between a given water sample and pure water, determining the direction water will flow.

Root Pressure

A pressure within the vascular system of the roots of plants that helps drive fluids upwards into the stem and leaves.

Water Potential

A measure of the potential energy in water, influencing its movement from areas of higher water potential to areas of lower water potential.