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Item RG154002: When warmer air enters a room with cooler air, both the warmer air and thermal energy rise because thermal energy is associated with the movement of the molecules of the air.

A student opens a window in her classroom, letting in air from the outside that is warmer than the air inside the classroom.

What happens to the warmer air that comes in from outside and to the thermal energy of that air when it comes into contact with the colder air in the classroom?

  1. The warmer air rises, but the thermal energy of the air does not.
  2. The thermal energy of the air rises, but the warmer air does not.
  3. Both the warmer air and thermal energy rise because thermal energy is associated with the movement of the molecules of the air.
  4. Both the warmer air and thermal energy rise, but they move separately because thermal energy is not associated with the movement of the molecules of the air. 
Distribution of Responses
Chart showing distrubtion of responses for Item EG154002
Scale Score for Item Difficulty
(200[Easy]-800[Difficult])
496
Students Responding Correctly
Group Correct Total Percent
Overall 3369 7565 45%
Grades
  4–516347434%
  6–8 1676 3909 43%
  9–12 1530 3182 48%
Gender
  Male1522348944%
  Female1764389245%
Primary Language
  English3018667145%
  Other26669039%

View data table