Is an intrinsic property of a material that is determined by the amount of mass per area of space or volume of the material

Name the following symbols used in electrical circuits

The loudness of a sound is synonymous to its pitch.

Infrasonic sounds are so low that you cannot hear them.

The loudest sounds that you can hear are called ultrasonic sounds.

Elasticity is a property of matter that is applicable only to objects that can stretch.

The amount of space an object occupies is its density.

Visible lights makes up a part of the electromagnetic spectrum.

Infrared waves have higher frequencies than visible light.

Light is an electromagnetic wave.

A light-year is the distance that light travels in a year.

Rainbows appear only after a rainstorm if the weather is hot.