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Question

Difficulty: EasyIdentifying Hypotheses and Beliefs

Two students discuss the cause of the glowing blue waves observed in some coastal waters at night.

Student 1: The glow is produced entirely by bioluminescent dinoflagellates (microscopic organisms) that emit light when physically disturbed by wave motion or predators. The temperature of the water has no direct effect on their light production.

Student 2: The glow is caused by phosphorescent minerals dissolved in the water that absorb sunlight during the day and re-emit it at night. This process is highly dependent on water temperature, with warmer water causing a brighter glow.

According to Student 1's hypothesis, the glowing waves are directly caused by which of the following?

  1. Microscopic organisms emitting light when physically disturbedAnswer
  2. B
    Dissolved minerals absorbing and re-emitting sunlight
  3. C
    A chemical reaction that only occurs in warm water
  4. D
    Wave motion transferring heat energy to minerals

Answer

Microscopic organisms emitting light when physically disturbed
The correct option is supported because Student 1 explicitly proposes that bioluminescent dinoflagellates, described as microscopic organisms, emit light when physically disturbed by wave motion or predators.

Step-by-Step Solution

1
Identify the target subject of the question.
The question asks for the cause of the glowing waves specifically according to Student 1.
This focuses the search on Student 1's statement in the passage.
2
Locate and analyze Student 1's hypothesis.
Student 1 states that the glow is produced by bioluminescent dinoflagellates (microscopic organisms) that emit light when physically disturbed.
This statement contains the direct explanation proposed by Student 1.
3
Evaluate the choices to find the one matching Student 1's explanation.
The option stating that microscopic organisms emit light when physically disturbed matches Student 1's description of bioluminescent dinoflagellates emitting light when disturbed.
This establishes the correct option based directly on the text.

Key Concept

Identifying the core hypothesis or belief of a specific student model in a conflict scenario.
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Topics

Identifying Hypotheses and Beliefs

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