14.1 Speed of Sound, Frequency, and Wavelength

What is sound according to the introduction in the chapter?

• A disturbance of matter that our ears detect

• A visual phenomenon

• A type of light wave

• A chemical reaction

What happens when a tree falls in a forest according to the text?

• It creates a sound by disturbing particles

• It produces light

• It changes color

• It stops time

Why would a tree falling in space not produce sound?

• There is no air or matter to disturb

• Space is too bright

• Trees cannot fall in space

• Sound travels faster in space

What is sound specifically defined as?

• A disturbance of matter transmitted from its source outward

• A form of light energy

• A type of electromagnetic wave

• A static form of energy

What are the regions of lower pressure in a sound wave called?

• Compressions

• Troughs

• Rarefactions

• Peaks

How do sound waves move through the air?

• As transverse waves

• As longitudinal waves

• As electromagnetic waves

• As static waves

What happens to the string's energy as it oscillates back and forth?

• It is completely lost

• It compresses and expands the surrounding air

• It remains static

• It turns into light energy

What happens to the amplitude of a sound wave as it moves away from its source?

• It increases.

• It decreases.

• It remains constant.

• It doubles.

What is gauge pressure in the context of sound waves?

• The total atmospheric pressure.

• The pressure relative to atmospheric pressure.

• The pressure at the source of the sound.

• The pressure at the peak of a wave.

How does the speed of sound in air compare to that in liquids and solids?

• It is faster in air.

• It is slower in air.

• It is the same in all media.

• It is unpredictable.