ASPECt
Energy: Forms, Transformation, Transfer, and Conservation
Item NG068006: If a book falls off a shelf, the amount of energy the book has when it is on the floor is less than the amount of energy it had when it was on the shelf because the amount of energy of the floor has increased, and if energy increases in one part of a system, it must decrease in another.
A book falls off a shelf and lands on the floor. When it lands on the floor, the book and the floor get a little warmer. Which of the following statements is TRUE about the amount of energy the book has when it is on the floor compared to when it was on the shelf?
- The amount of energy the book has when it is on the floor is the same as the amount of energy it had when it was on the shelf because, regardless of what happens to an object, the amount of energy an object has cannot change.
- The amount of energy the book has when it is on the floor is greater than the amount of energy it had when it was on the shelf because new energy in the form of thermal energy was created when the book lands on the floor.
- The amount of energy the book has when it is on the floor is less than the amount of energy it had when it was on the shelf because energy was destroyed when the book hit the floor.
- The amount of energy the book has when it is on the floor is less than the amount of energy it had when it was on the shelf because the amount of energy the floor has increased, and if energy increases in one part of a system, it must decrease in another part of the system.
Answer Choice |
Overall |
Grades |
Gender |
Primary Language |
||||
|---|---|---|---|---|---|---|---|---|
| n = 1911 |
4–5 n = 78 | 6–8 n = 964 |
9–12 n = 869 |
Male n = 922 |
Female n = 959 |
English n = 1753 |
Other n = 107 |
|
| A. | 19% | 24% | 17% | 20% | 19% | 19% | 18% | 24% |
| B. | 42% | 33% | 45% | 41% | 41% | 43% | 43% | 36% |
| C. | 15% | 10% | 17% | 14% | 16% | 14% | 15% | 20% |
| D. | 24% | 32% | 21% | 26% | 24% | 24% | 24% | 20% |