A Sound Wave Is Established in the Air

question 6

Multiple Choice

A sound wave is established in the air. Which of these statements accurately describes the motion of the individual air molecules?

• A)back and forth around equilibrium positions in the direction of the sound wave
• B)back and forth around equilibrium positions perpendicular to the direction of the sound wave
• C)continuous motion in the direction of the sound wave
• D)molecules not moving; sound moving between them

---

Definitions:

Horizontal Offset

The displacement of the Earth's surface along a fault line, measured in a horizontal direction.

Fault Scarp

A steep slope or cliff formed as a result of movement along a geological fault, typically found at the Earth's surface.

Carbon-14

A carbon isotope that emits radiation, utilized in radiocarbon dating to ascertain the age of organic matter.

Trenches

Deep, narrow depressions in the ocean floor, typically resulting from the subduction of one tectonic plate under another.