Sound Waves Quiz 20A

What type of waves move up and down perpendicular to the direction of the wave?

• Longitudinal Waves

• Transverse Waves

• Surface Waves

• Electromagnetic Waves

What is the term for the bouncing back of sound waves off a surface?

• Refraction

• Diffraction

• Reflection

• Absorption

What happens when sound waves pass from one medium to another?

• Reflection

• Refraction

• Diffraction

• Absorption

What distinguishes different instruments or voices in music?

• Speed of sound

• Echo

• Timbre

• Acoustic

What is the term for an area on a sound wave where air molecules are spread apart, resulting in decreased pressure?

• reflection

• compression
• rarefaction

• frequency

What type of wave occurs when the medium moves back and forth in the same direction as the wave travels, as seen in sound waves?

• Latitudinal wave

• longitudinal wave

• Transverse wave
• Electromagnetic wave

What is the number of sound waves produced in one second, measured in Hertz (Hz), affecting the pitch of the sound?

• Wavelength in meters (m) indicates sound distance.
• Timbre describes the quality of sound waves.
• Amplitude in decibels (dB) measures sound intensity.
• Frequency in Hertz (Hz) indicates the number of sound waves per second.

What is the bending of sound waves around obstacles, allowing sound to be heard even when the source is not in direct line of sight ?

• Reflection
• Refraction
• Absorption
• Diffraction