Item NG099001: When skateboarding down a hill, gravitational potential energy is transformed into motion energy and thermal energy.

A girl is riding her skateboard down a hill.  She speeds up as she goes down the hill, and the wheels get a little warmer.

What energy transformations happen while she is going down the hill?

  1. Motion energy (kinetic energy) is transformed into gravitational potential energy and thermal energy.
  2. Gravitational potential energy is transformed into motion energy (kinetic energy) and thermal energy.
  3. Gravitational potential energy is transformed only into motion energy (kinetic energy).
  4. No energy transformations are involved while she is going down the hill.

Distribution of Responses

Chart showing distrubtion of responses for Item NG099001

Percent of students responding correctly

Overall46%
Grades 6–842%
Grades 9–1253%
Male47%
Female45%
Primary Language is English46%
Primary Language is not English38%

View data table