Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
It causes fluid to move from high pressure to low pressure, creating flow.
B
It prevents fluid movement, maintaining static equilibrium.
C
It equalizes pressure throughout the fluid instantly.
D
It has no effect on fluid dynamics.
Understanding the Answer
Let's break down why this is correct
Answer
When a region in a fluid suddenly drops in pressure, the surrounding fluid experiences a steeper pressure gradient. The pressure gradient force pushes fluid from higher‑pressure areas toward the lower‑pressure zone, accelerating it toward the drop. This acceleration is the pressure gradient force that counteracts gravity and other forces, helping the fluid reach a new hydrostatic balance. For example, in a low‑pressure storm cell, air rushes inward, creating wind as the pressure gradient force pulls the air toward the center. Thus, the pressure gradient force is the key driver that restores equilibrium by moving fluid toward the lower‑pressure region.
Detailed Explanation
When pressure falls in one area, the surrounding fluid feels a pull toward that area. Other options are incorrect because Some think the force stops movement, but actually it starts motion; The gradient does not instantly level pressure.
Key Concepts
Pressure Gradient Force
Topic
Hydrostatic Equilibrium
Difficulty
easy level question
Cognitive Level
understand
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