ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item NG048004: A can of juice in contact with an ice pack will be colder than a can of juice that is not in contact with an ice pack because thermal energy was transferred from the can of juice to the ice pack.
A boy and a girl each have a lunch bag. In the morning, they each put a can of juice in their lunch bag. The cans of juice are both at the temperature of the room. The girl puts a frozen ice pack next to the juice can in her lunch bag, but the boy does not. They close the lunch bags and bring them to school.
At lunch, the boy and girl take the cans of juice out of their lunch bags. The girl notices that her ice pack is still cold. Which of the following describes the temperature of the cans of juice and why?
- The girl's can of juice will be colder than the boy’s can of juice because coldness was transferred from the girl's ice pack to her can of juice in her lunch bag.
- The girl’s can of juice will be colder than the boy’s can of juice because energy was transferred from the girl’s can of juice to the ice pack in her lunch bag.
- Both cans of juice will be cold because lunch bags are used to keep food cold.
- The temperature of the cans of juice will not change because they started out at the same temperature and no energy was transferred to or from them.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
|||||
|---|---|---|---|---|---|---|---|---|---|
| n = 1324 |
4–5 n = 230 | 6–8 n = 668 |
9–12 n = 426 |
Male n = 653 |
Female n = 644 |
English n = 1139 |
Other n = 156 |
||
| A. | The girl's can of juice will be colder than the boy’s can of juice because coldness was transferred from the girl's ice pack to her can of juice in her lunch bag. | 70% | 85% | 72% | 59% | 66% | 73% | 71% | 60% |
| B. | The girl’s can of juice will be colder than the boy’s can of juice because energy was transferred from the girl’s can of juice to the ice pack in her lunch bag. | 21% | 12% | 17% | 31% | 23% | 19% | 20% | 24% |
| C. | Both cans of juice will be cold because lunch bags are used to keep food cold. | 5% | 2% | 5% | 5% | 6% | 4% | 4% | 8% |
| D. | The temperature of the cans of juice will not change because they started out at the same temperature and no energy was transferred to or from them. | 4% | 1% | 5% | 5% | 5% | 4% | 4% | 6% |