What Is the Theory of Plate Tectonics

question 11

Multiple Choice

What is the theory of plate tectonics?

• A) Earth was created 6,000 years ago.
• B) Earth is made up of a large number of geological plates that move slowly across its surface.
• C) Human activities are changing Earth's surface.
• D) The number of tectonic plates equals the number of continents on Earth.
• E) Earth's continents are moving closer together.

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Definitions:

Soleus

A powerful muscle in the calf of the leg that is involved in standing and walking, lying beneath the gastrocnemius muscle.

Sternocleidomastoid

The sternocleidomastoid is a muscle in the neck that runs from the sternum and clavicle to the mastoid process of the temporal bone, involved in head movement.

Orbicularis Oculi

A circular muscle that surrounds the eyelid, allowing it to close or blink.

Masseter

A facial muscle that plays a major role in the chewing of food by raising the lower jaw towards the upper jaw.