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

Percent of students responding correctly

Overall42%
Grades 6–842%
Grades 9–1242%
Male43%
Female42%
Primary Language is English42%
Primary Language is not English35%

View data table