Jessica: Pitch is how high or low a sound is. The pitch depends on vibrations. High pitch sounds have low amounts of vibrations Rachael: Pitch describes how high or low a sound is. Sounds are caused by vibrations. The more vibrations, the higher the pitch.
Harvey: Pitch is caused by vibrations. The more vibrations, the lower the pitch of the sound.
Derek Pitch is how high or low a sound is. All sounds have mostly the same pitch.
Who has the best description of pitch?
Jessica
O Rachel
O Harvey
O Derek

Rachel

Explanation:

Pitch indeed refers to the highness of lowness of a sound. We are able to sense pitch based on the frequency of the sound wave with a higher frequency (more vibrations) having a higher pitch and a lower frequency having a lower pitch.

This is why lighter strings on guitars produce a higher pitch because when struck, they vibrate more as opposed to heavier strings. Rachel is therefore correct.

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.