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Item EG047004: When the kinetic energy of molecules increases, the thermal energy of an object increases.

What happens to the thermal energy of an object when the kinetic energy (motion energy) of the molecules that make up the object increases?

  1. When the kinetic energy of the molecules increases, the thermal energy of the object increases.
  2. When the kinetic energy of the molecules increases, the thermal energy of the object decreases.
  3. Whether the thermal energy increases or decreases depends on whether the object is a solid, a liquid, or a gas.
  4. The thermal energy of the object will not change because thermal energy is not related to the kinetic energy of the molecules.
Distribution of Responses
Chart showing distrubtion of responses for Item 047004
Scale Score for Item Difficulty
(200[Easy]-800[Difficult])
489
Students Responding Correctly
Group Correct Total Percent
Overall 516 1132 46%
Grades
  4–5N/AN/AN/A
  6–8 259 617 42%
  9–12 257 515 50%
Gender
  Male24055643%
  Female26455348%
Primary Language
  English45699446%
  Other4610942%

View data table