Internal and External Stimulus

A bird is thirsty and drinks some water

what is the response?

• a bird is thirsty

• it drinks some water

A bird is thirsty and drinks some water

• Internal stimulus

• external stimulus

She sees a spider and screams

• Internal stimulus

• External stimulus

A squirrel sees a cat and runs up a tree

what is the stimulus?

• A squirrel sees a cat

• It runs up a tree

A squirrel sees a cat and runs up a tree

• Internal stimulus

• External stimulus