While researching a topic, a student has taken the following notes:
● Generally, an object will heat up when twisted and cool down when untwisted.
● The twisting of an object is known as torsion.
● A 2019 study led by researchers Zunfeng Liu and Ray Baughman tested the torsional heating and cooling of various fibers.
● They wanted to know whether torsional cooling could be used as a refrigeration method.
● When ethylene propylene diene monomer (EPDM) rubber fiber was twisted, its average surface temperature increased by 12°C.
● When three-ply spandex rubber fiber was twisted, its average surface temperature increased by 14.6°C.
The student wants to present the study’s research question. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Explanation
Answer: A) A 2019 study researched whether torsional cooling could be used as a refrigeration method.
Goal: Present the study's research question.
Why? A research question states what the study aimed to discover. A identifies the question: can torsional cooling work for refrigeration?
Traps:
- B) States results → not research question
- C) Definition → not research question
- D) General fact → not research question