End of Year Vocabulary

Front

A natural response an animal is born with

Back

Instinct

Front

To become aware of through senses

Back

Perceive

Front

Special cells that detect sensory information

Back

Sense receptor

Front

Information gathered by sense receptors

Back

Sensory input

Front

Something that causes a reaction or change

Back

Stimulus

Front

How far something can be seen

Back

Visibility

Front

A material that allows only some light to pass through

Back

Translucent

Front

A material that lets all light pass through

Back

Transparent

Front

A material that blocks all light from passing through

Back

Opaque

Front

A surface bouncing back light, like a mirror

Back

Reflection