Physics Sound Quiz For 10th Grade

the higher the frequency, the higher note we hear (higher pitched)

The amplitude of a wave is defined as the distance from the middle line (average) to the top of the wave (crest). It represents the maximum displacement of a particle in the medium from its equilibrium position when a wave passes through it. The greater the amplitude, the more energy the wave carries.

the vibration of the air particles is transferred to the eardrum, which transfers it to other parts of the ear, including tiny hairs that send electrical messages to the brain saying 'this is a high sound' or 'this is the note c minor'

the greater the frequency (higher), the smaller the wavelength

This is why radio waves can travel through space like light - they don't need air particles like sound waves do

the higher the frequency, the shorter the wavelength

Amplitude is the distance from the average line down the middle of the wave to the top of a crest. The greater the amplitude, the louder the noise seems to our ears

The bottom one only shows 1/2 a wavelength so the whole wavelength would be twice as long, much longer than those above

The statement "radio waves are actually part of the electromagnetic spectrum (like light)" is true because radio waves are a type of electromagnetic radiation, just like light. The statement "sound can only travel through particles like air, rocks or water" is also true because sound waves require a medium to travel through, such as air, water, or solid objects. Sound cannot travel through a vacuum or empty space.

The wavelength of a sound wave is inversely proportional to its frequency, so if the top sound wave has a longer wavelength than the bottom one, it means that the bottom wave has a higher frequency and therefore a higher pitch. The statement about the note (pitch) of the bottom wave being higher than the top one is true.