Physical Variables Chase Is Designing an Experiment That Requires Intense

question 42

Multiple Choice

Physical Variables Chase is designing an experiment that requires intense concentration and is concerned about confounding by outside noise.If he can use any of the control techniques discussed in this chapter, his first choice should be

• A)balancing.
• B)constancy of conditions.
• C)elimination.
• D)isolation.

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Definitions:

Tides

Regular, periodic variations in the sea level caused by the gravitational pull of the moon and sun on Earth's oceans.

Storms

Severe weather phenomena characterized by strong winds, heavy rain, thunder, lightning, or snow.

Seafloor Slope

The gradient or incline of the ocean floor away from the continental shelf towards the deeper ocean basin.

Shoreline

The boundary line where land meets ocean or sea, often changing due to tides and erosion.