In a Classic Study on Depth Perception, Gibson and Walk

question 9

Multiple Choice

In a classic study on depth perception, Gibson and Walk placed infants of various ages on a fabric-covered runway that ran across the center of a clever device called a visual cliff. In the study, _____.

• A) girls refused to cross the visual cliff but boys crossed it
• B) boys crossed the visual cliff faster than girls
• C) infants crossed the cliff when their mothers encouraged them to do so
• D) eight out of ten crawling infants refused to cross the seemingly unsupported surface of the visual cliff

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Definitions:

Silicon Tetrahedron

A structural unit in silicate minerals, consisting of a central silicon atom covalently bonded to four oxygen atoms at the corners of a tetrahedron.

Silicate Minerals

Minerals that contain silicon and oxygen, and possibly other elements, constituting the largest family of minerals.

Silicon Tetrahedron

A fundamental building block in silicate minerals, consisting of a silicon atom surrounded by four oxygen atoms in a tetrahedral arrangement.

Cleavage

A geological term referring to the tendency of minerals to break along specific planes of weakness due to their crystal structure.