ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item EG012003: A ball has more motion energy than a person when the ball is moving and the person is not moving.
A girl is sitting in a chair and throws a ball. After she throws the ball, she sits still while she watches the ball move through the air. While the ball is moving through the air, does the girl or the ball have more kinetic energy (motion energy) and why?
- The girl has more kinetic energy because she is alive, and the ball is not.
- The girl has more kinetic energy because she weighs more than the ball.
- The ball has more kinetic energy because it is moving, and the girl is not.
- The ball has more kinetic energy because it is higher off the ground than the girl.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 453
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 898 | 1346 | 67% |
| Grades | |||
| 4–5 | 175 | 234 | 75% |
| 6–8 | 342 | 565 | 61% |
| 9–12 | 381 | 547 | 70% |
| Gender | |||
| Male | 407 | 628 | 65% |
| Female | 463 | 683 | 68% |
| Primary Language | |||
| English | 791 | 1171 | 68% |
| Other | 73 | 134 | 54% |