Item AM077002: The molecules of hot air move faster than the molecules of cold air.

How do the molecules of hot air differ from the molecules of cold air?

  1. The molecules of hot air move faster than the molecules of cold air.
  2. The molecules of hot air move slower than the molecules of cold air.
  3. The molecules of hot air move at the same speed as the molecules of cold air.
  4. It is not possible to say anything about how the molecules differ without more information.
Distribution of Responses
Chart showing distrubtion of responses for Item AM077002
Students Responding Correctly
Group Correct Total Percent
Overall 1797 2900 62%
Grades
  6–8 1076 1857 58%
  9–12 715 1034 69%
Gender
  Male891143462%
  Female886143462%
Primary Language
  English1625254764%
  Other14030446%

View data table

Notes
See NGSS performance expectation MS-PS1-4: Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.