Megathrusts Between Subducting Oceanic Crust and an Overriding Plate Are

question 45

Multiple Choice

Megathrusts between subducting oceanic crust and an overriding plate are a potential source of tsunamis because ________.

• A)the earthquakes on these faults are underwater and could displace large amounts of water from the oceans
• B)the earthquakes on these faults are underwater and could release large amounts of water from the asthenosphere
• C)one side of the fault is on land and the other is underwater so an earthquake could cause a landslide or tsunami depending on which side moved
• D)oceanic crust is "thrust" over the continent along a megathrust so that forces the land downward producing a tsunami

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Definitions:

Protein-Type Hormone

Hormones that are composed of chains of amino acids and interact with cell surface receptors; they include insulin and growth hormones.

Cellular Level

The level of organization that includes cells, the basic structural and functional units of all living organisms.

Negative Feedback Mechanism

A process where the output of a system dampens or reduces the processes leading to the output, maintaining system stability.

Parathyroid Glands

Small endocrine glands in the neck that produce parathyroid hormone, which regulates calcium levels in the blood and bone.