The Driving Force Behind the Movement of Oceanic and Continental

question 8

Multiple Choice

The driving force behind the movement of oceanic and continental plates may be

• A)the rotation of Earth on its axis.
• B)movements of Earth's liquid outer core.
• C)adjustment of Earth's crust.
• D)convection cells within the mantle.

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Definitions:

Rotation

Movement of a structure about its axis.

Linea Alba

A fibrous structure that runs down the midline of the abdomen, providing muscle attachment.

Serratus Anterior

A muscle of the chest that assists in the upward movement of the arm and in the breathing process.

Rectus Abdominis

A long muscle running from the pubis to the rib cage, involved in flexing the lumbar spine and stabilizing the pelvis and lower back.