Question

In what two ways does the author develop the central idea of the passage?

The author presents the differences between light and sound waves.
The author gives examples of how sound travels through various substances and surfaces.
The author describes how different surfaces affect the speed of sound.
The author explains that it is easier to gather information about sound waves.
The author uses light waves to specify how inferior sound waves are at traveling through barriers.

Answer 1

The author gives examples of how sound travels through various substances and surfaces.

The author describes how different surfaces affect the speed of sound.

Step-by-step explanation:

The passage explores how sound travels and how its travel is affected by different surfaces, atmospheres, and liquids among others. Therefore, "The author gives examples of how sound travels through various substances and surfaces" and "The author describes how different surfaces affect the speed of sound" are the correct ans

Answer 2

El autor da ejemplos de cómo el sonido viaja a través de diversas sustancias y superficies.

El autor usa ondas de luz para especificar qué tan inferiores son las ondas de sonido para atravesar barreras.

Step-by-step explanation:

ESPERO HABERTE AYUDADO