Match the following breakers types with the correct style of beach: 13. Plunging Breakers A. Gentle Beach Slope 14. Surging Breakers B. Steep Beach Slope 15. Spilling Breakers C. Moderate Beach Slope

13. Gentle Beach Slope - Spilling Breakers.

14. Steep Beach Slope  -  Surging Breakers.

15.  Moderate  Beach Slope  - Plunging breakers.

Explanation:

Spilling breakers - Waves move across a gently sloping sea floor creating foam and turbulent water.

Surging breakers - Waves travels down a steep beach slope as it builds up and then moves rapidly up the beach.

Plunging Breakers - Wave crests fall forward with a great deal of force in a well-defined area as it travels across a moderately sloped beach. The wave crests form a well-defined curl as they approach the shores.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

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