Item NG061002: When cold butter is placed on top of hot corn, thermal energy is transferred from the corn to the butter but not from the butter to the corn.
A cook heats an ear of corn in a pot of hot water. She takes the corn out of the hot water and puts it on a plate. Then she takes some butter out of the refrigerator. She cuts a piece of cold butter and places it on top of the hot corn.
![](http://assess.bscs.org/items/media/uploads/image/NG-Energy%20Part%202/butter&corn.jpg)
Which of the following describes how thermal energy is transferred between the corn and the butter?
- Thermal energy is transferred both from the corn to the butter and from the butter to the corn.
- Thermal energy is transferred from the corn to the butter but not from the butter to the corn.
- Thermal energy is transferred from the butter to the corn but not from the corn to the butter.
- Thermal energy is not transferred between the corn and the butter.
- Distribution of Responses
![Chart showing distrubtion of responses for Item WC061002](http://chart.apis.google.com/chart?chs=265x180&cht=bvg&chf=bg,s,00000000&chco=76A4FB|339933|76A4FB|76A4FB&chds=0,100&chd=t:35,44,13,7&chxl=0:|A|B|C|D&chxt=x,y&chbh=a&chbw=a&chm=N*f0*%,000000,0,-1,11,,e::5&filename=WC061002-dist.png)
- Students Responding Correctly
Group | Correct | Total | Percent |
---|---|---|---|
Overall | 1308 | 2942 | 45% |
Grades | |||
6–8 | 751 | 1764 | 43% |
9–12 | 555 | 1172 | 47% |
Gender | |||
Male | 650 | 1431 | 45% |
Female | 638 | 1453 | 44% |
Primary Language | |||
English | 1196 | 2639 | 45% |
Other | 74 | 226 | 33% |