Item EG053006: For two ice cubes that are made up of the same number of molecules, the ice cube with the molecules moving at the lower average speed has less thermal energy.
A student has two ice cubes. Ice Cube 1 and Ice Cube 2 are both made up of the same number of molecules. The average speed of the molecules of Ice Cube 1 is less than the average speed of the molecules of Ice Cube 2.
Which ice cube has less thermal energy and why?
- Ice Cube 1 has less thermal energy because its molecules are moving slower than the molecules of Ice Cube 2.
- Ice Cube 2 has less thermal energy because its molecules are moving faster than the molecules of Ice Cube 1.
- Ice Cube 1 and Ice Cube 2 have the same amount of thermal energy because anything made of ice has the same amount of thermal energy no matter how fast the molecules are moving.
- Ice Cube 1 and Ice Cube 2 do not have any thermal energy because frozen things do not have thermal energy.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
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n = 1073 |
4–5 n = 0 | 6–8 n = 647 |
9–12 n = 426 |
Male n = 543 |
Female n = 514 |
English n = 920 |
Other n = 137 |
|
A. | 59% | N/A | 55% | 65% | 58% | 60% | 60% | 49% |
B. | 17% | N/A | 18% | 15% | 15% | 19% | 17% | 17% |
C. | 15% | N/A | 17% | 11% | 17% | 12% | 14% | 18% |
D. | 9% | N/A | 9% | 9% | 9% | 9% | 8% | 16% |