Which of the Following Does NOT Help Explain Why Refraction

question 45

Multiple Choice

Which of the following does NOT help explain why refraction causes some seismic waves to return toward Earth's surface?

• A) steeply descending rays get refracted to shallower angles as they encounter faster materials at depth
• B) rising rays refract upward as they encounter slower and slower material
• C) the seismic waves encounter materials with different properties, including density
• D) steeply descending rays encounter the liquid core and reflect back to the surface

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Definitions:

Kidney Tubules

Microscopic tubes in the kidneys where urine is formed through the processes of filtration, reabsorption, and secretion.

Desmosome

A type of intercellular junction that anchors cells together in tissues that are subject to considerable stretching.

Tight Junction

A specialized connection between neighboring cells that creates a barrier to prevent the leakage of molecules across epithelial tissues.

Gap Junction

Specialized intercellular connections between a multitude of animal cell-types that permit the direct transfer of chemical and electrical signals.