Waves Review-Sound & Light

Which choice below does NOT describe sound waves?

• Sound waves are mechanical waves

• Sound waves are longitudinal waves

• Sound waves require a medium

• Sound waves travel fastest in a vacuum

Which of these does NOT affect the speed of sound?

• loudness of the sound

• temperature of the medium

• density of the medium

• distance between particles in the medium

Because its molecules are far apart, sound waves will travel slowly through

• air

• water

• iron

• copper

The speed of sound in air at room temperature is 343 m/s. If an opera singer sings a "middle C" with a frequency of 262 Hz, what is the wavelength of the sound wave?

• 0.76 m

• 1.3 m

• 81 m

• 89,866 m

Which of these determines the volume of a sound?

• frequency of the waves

• amplitude of the waves

• pitch of the sound

• speed of the sound

The pitch of a sound is most closely related to the

• frequency of the sound waves

• distance from the sound source

• medium through which the sound travels

• intensity of the sound

Which statement below best explains the Doppler Effect?

• The intensity of a sound increases as the observer moves toward the source of the sound.

• The pitch of a sound decreases as the source of a sound moves away from an observer.

• A speed of sound increases as the source of a sound moves toward an observer.

• The quality of a sound decreases as the observer moves away from the source of the sound.

Which of these Electromagnetic waves has the highest energy?

• gamma rays

• ultraviolet light

• infrared

• microwaves

As the frequency of light waves increase,

• the speed increases

• the energy decreases

• the energy stays the same

• the wavelength decreases

Energy from the sun is transported by

• mechanical waves

• electromagnetic waves

• sound waves

• compression waves