Sound Waves Flashcard

Front

What is sound?

Back

Sound is a type of energy made by vibrations that travel through the air or another medium.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Front

What determines the pitch of a sound?

Back

The pitch of a sound is determined by its wavelength; shorter wavelengths produce higher pitches, while longer wavelengths produce lower pitches.

Tags

NGSS.MS-PS4-1

Front

What is an echo?

Back

An echo is a reflection of sound that arrives at the listener after a delay, caused by sound waves bouncing off surfaces.

Tags

NGSS.MS-PS4-2

Front

What is the relationship between frequency and pitch?

Back

Frequency is the number of vibrations per second; higher frequency results in a higher pitch, while lower frequency results in a lower pitch.

Front

What are vibrations?

Back

Vibrations are rapid back-and-forth movements of particles in a medium that create sound.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Front

What is the speed of sound in air at room temperature?

Back

The speed of sound in air at room temperature (20°C) is approximately 343 meters per second.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Front

How does temperature affect the speed of sound?

Back

The speed of sound increases with an increase in temperature because warmer air has more energy, allowing sound waves to travel faster.

Front

What is wavelength in relation to sound waves?

Back

Wavelength is the distance between two consecutive points of a wave, such as crest to crest or trough to trough.

Front

What is amplitude in sound waves?

Back

Amplitude refers to the height of the sound wave, which determines the loudness of the sound; greater amplitude means louder sound.

Tags

NGSS.MS-PS4-1

Front

What is the difference between a sound wave and a light wave?

Back

Sound waves are mechanical waves that require a medium to travel through, while light waves are electromagnetic waves that can travel through a vacuum.