What is the primary reason sound becomes less audible as distance increases?

Properties and Applications of Parabolas

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Physics
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9th - 10th Grade
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Hard

Sophia Harris
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sound waves increase in frequency.
Sound waves dissipate over a larger area.
Sound waves are absorbed by the air.
Sound waves travel faster over longer distances.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do whispering galleries differ from typical sound behavior?
They amplify sound by increasing its frequency.
They convert sound waves into light waves.
They channel sound waves to a specific point.
They absorb sound waves completely.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a whispering gallery, why can a person hear a whisper from across the room?
The room is designed to amplify sound.
The sound waves are absorbed by the walls.
The sound waves are directed to a focal point.
The room is completely silent.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which geometric shape is known for reflecting sound or light to a single point?
Ellipse
Circle
Parabola
Rectangle
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the focus of a parabola?
A line parallel to the directrix
A point from which distances to the parabola are measured
A line that the parabola never touches
A point equidistant from all points on the parabola
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the directrix in defining a parabola?
It is a line that helps define the parabola's shape.
It is the point where the parabola intersects the x-axis.
It is the axis of symmetry.
It is the maximum width of the parabola.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the concept of convergence relate to parabolas?
It indicates the maximum height of a parabola.
It shows how parabolas can be transformed into circles.
It explains how parabolas reflect light or sound to a single point.
It describes how parabolas expand infinitely.
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