The Principle of Constant Proportions States That

question 43

Multiple Choice

The Principle of Constant Proportions states that:

• A)ocean salinity varies as a function of season.
• B)ocean salinity varies with geographical location.
• C)the percentage of chloride varies with geographical location.
• D)the percentage of sodium varies with ocean depth.
• E)the relative concentrations of the major ions in seawater does not change.

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Definitions:

Difference Threshold

The smallest amount by which a stimulus must be changed in order to produce a noticeable variation in sensory experience.

Minimum Transduction

The least amount of energy needed for a sensory system to detect a stimulus.

The Pupil

The opening in the center of the iris of the eye, through which light enters to reach the retina.

Aperture

In optics, the opening through which light travels in devices such as cameras and microscopes, controlling the amount of light that enters.