Item RG216001: Energy is transferred from the battery to all of the hands on a wall clock because all the hands are moving.
Inside a wall clock, a battery is connected in a complete circuit to a motor that turns the hands of the clock.
When a person puts a new battery in a clock, the hands of the clock start to turn. The hour and minute hands turn slowly while the second hand turns quickly. While the hands on the clock are turning, is energy being transferred? Why or why not?
- Yes, energy is transferred from the battery but only to the second hand because it is moving the fastest.
- Yes, energy is transferred from the battery to all of the hands because all the hands are moving.
- Yes, energy is transferred from the battery to all of the hands because batteries transfer energy all the time even when they are not connected in a complete circuit to a device.
- No, energy is not transferred from the battery to the hands because energy cannot be transferred by a battery.
- Distribution of Responses
- Scale Score for Item Difficulty
(200[Easy]-800[Difficult]) - 472
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 1270 | 2218 | 57% |
Grades | |||
4–5 | 171 | 411 | 42% |
6–8 | 487 | 828 | 59% |
9–12 | 612 | 979 | 63% |
Gender | |||
Male | 589 | 1009 | 58% |
Female | 652 | 1138 | 57% |
Primary Language | |||
English | 1179 | 2017 | 58% |
Other | 59 | 123 | 48% |