Psychologically, When the Frequency of a Sound Varies We Hear

question 300

True/False

Psychologically, when the frequency of a sound varies we hear changes in pitch, which corresponds roughly to how high or low a tone sounds.

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Definitions:

Gastrula

An early stage in embryonic development where the embryo consists of layers of cells (ectoderm, mesoderm, and endoderm) that will develop into different organs and tissues.

Germ Layers

The three primary layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo from which all tissues and organs develop.

Fertilized Egg

A fertilized egg is the result of the fusion of a male sperm cell and a female ovum, marking the beginning of a new organism's development.

Umbilical Blood Vessels

The blood vessels in the umbilical cord that carry oxygen and nutrients from the mother to the fetus and waste products back to the mother.