Item CL137001: When a container of water is warmed over a flame, warmer water at the bottom rises toward the top and the colder water at the top sinks toward the bottom.

Which of the following statements describes what happens when a container of water is warmed over a flame?

  1. Warmer water at the bottom rises toward the top and the colder water at the top sinks toward the bottom.
  2. Warmer water rises at the bottom toward the top but colder water at the top does not sink toward the bottom.
  3. The warmer water at the bottom does not rise. Thermal energy rises through the water, warming the water as it rises.
  4. The warmer water at the bottom and thermal energy both rise, but they rise separately.
Distribution of Responses
Chart showing distrubtion of responses for Item CL137001
Students Responding Correctly
Group Correct Total Percent
Overall 888 2108 42%
Grades
  6–8 425 1014 42%
  9–12 460 1084 42%
Gender
  Male441103043%
  Female430101642%
Primary Language
  English735173342%
  Other8724935%

View data table