ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item RG029004: After a child plays with a remote controlled car, the remote control will be a little warmer because it uses a battery, and the wheels will be a little warmer because they rubbed against the floor.
A boy puts batteries in a remote control so that he can play with a remote controlled car. He plays with the car for an hour. As the car moves around, the wheels of the car rub against the floor. After he is finished playing, he picks up the car.
Will the wheels and the remote control be warmer after the boy plays with them for an hour? Why or why not?
- The remote control will be a little warmer because things that use batteries get warmer when you use them. The temperature of the wheels will not change.
- The wheels will be a little warmer because things that move get warmer as parts of them rub against each other. The temperature of the remote control will not change.
- The remote control will be a little warmer because it uses a battery, and the wheels will be a little warmer because they rubbed against the floor.
- Neither the remote control nor the wheels will be warmer because things do not get warmer just by using batteries or by rubbing together.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 468
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 5171 | 8813 | 59% |
| Grades | |||
| 4–5 | 787 | 1509 | 52% |
| 6–8 | 2324 | 4014 | 58% |
| 9–12 | 2060 | 3290 | 63% |
| Gender | |||
| Male | 2383 | 4164 | 57% |
| Female | 2687 | 4438 | 61% |
| Primary Language | |||
| English | 4649 | 7812 | 60% |
| Other | 397 | 747 | 53% |